理学博士, 東京大学

有機材料科学、錯体材料科学、スピン科学

Nanotechnology/Materials, Structural and functional materials

Nanotechnology/Materials, Inorganic and coordination chemistry

Life sciences, Bioorganic chemistry

Nanotechnology/Materials, Structural/physical organic chemistry

Nanotechnology/Materials, Functional solid-state chemistry

Apr. 2010
電気通信大学大学院情報理工学研究科, 教授

Apr. 2008 - Mar. 2010
電気通信大学電気通信学部, 教授

Apr. 2007 - Mar. 2008
電気通信大学電気通信学部, 准教授

Apr. 1998 - Mar. 2007
電気通信大学電気通信学部, 助教授

Apr. 1996 - Mar. 1998
電気通信大学電気通信学部, 講師

Mar. 1991
The University of Tokyo, Graduate School, Division of Science, 化学専攻

Mar. 1988
The University of Tokyo, Graduate School, Division of Science, 化学専攻

Mar. 1986
The University of Tokyo, Faculty of Science, 化学科

01 Apr. 1982
The University of Tokyo, 理科I類

31 Mar. 1982
Kaisei High School, 普通科

1995 - 2017
プログラム編成委員 07A有機化学-物性と構造, 日本化学会春季年会（随時、関東地区開催の年度で）, Society

2013 - 2016
代議員（社員）, 日本化学会, Society

1996 - 2015
職域会員代表, 日本化学会, Society

2013 - 2013
選挙管理委員, 電子スピンサイエンス学会, Society

2012 - 2013
代議員, 日本化学会関東支部, Society

Jul. 2017
東北大学金属材料研究所強磁場センター
ヘテロスピン希土類錯化合物に見られる磁気異方性の研究
Selected Topics 2016 HFLSM-IMR

Feb. 2017
American Chemical Society
USA
ACS Editors' Choice, T. Kanetomo;T. Kihara;A. Miyake;A. Matsuo;M. Tokunaga;K. Kindo;H. Nojiri;T. Ishida
Official journal, United States

Feb. 2016
The Japan Chemical Society
Japan
BCSJ Award, Yumi Ida;Hiroyuki Nojiri;Takayuki Ishida
Official journal, Japan

Nov. 2015
日本学術振興会
平成27年度「科研費」審査委員表彰
科研費審査委員表彰
Publisher

Aug. 2008
東北大学金属材料研究所
Research Highlights 2008 IMR

Jun. 2004
日本化学会欧文誌
Selected Paper (BCSJ), N. Takagami;T. Ishida;T. Nogami
Official journal, Japan

Three Single-ion Magnet Candidates from Erbium(III) Squarate Complexes Having a Square-antiprism Coordination Structure
R. Takano; Y. Kitagawa; T. Ishida
Corresponding, European Journal of Inorganic Chemistry, 28, Jun. 2025, Peer-reviwed
English

Solid–State Transformation (Stotal = 0, 1, and 2) in a Ni2+ Chelate with Two tert-Butyl 5-(p-Biphenylyl)-2-pyridyl Nitroxides
M. Mitsui; T. Ishida
Corresponding, Materials, 18, 2793/1-14, Jun. 2025, Peer-reviwed
Scientific journal, English

Spin-Transition-Like Behavior in [Cu(pyNO)X2] (pyNO = tert-Butyl 2-Pyridyl Nitroxide): 113 K Hysteresis for X = Cl and Incomplete Crossover for X = Br
D. Iida; Y. Kyoden; T. Ishida
Corresponding, Inorganic Chemistry, 64, 10219-10227, May 2025, Peer-reviwed
Scientific journal, English

Spin and Structural Dynamics of Persistent π‐Mer and π‐Dimer of a Tethered S,C,C‐Bridged Triphenylamine Dimer
H. Morishita; K. Sambe; S. Dekura; H. Sugishita; C. Kitamura; T. Matsumoto; T. Takeda; R. Uesugi; T. Ishida; T. Akutagawa; S. Suzuki; S.-i. Kato
Chemistry – A European Journal, Wiley, 31, e202500576/1-8, 13 Apr. 2025, Peer-reviwed, One‐ and two‐electron‐oxidized species of two π‐conjugated systems that adopt close π‐stacking structures are referred to as π‐mers and π‐dimers, respectively. These cationic species exhibit intriguing physicochemical properties that are markedly distinct from those of their parent monomeric radical cations. In this study, we have achieved the chemical oxidation of a newly designed tethered dimer comprising two planar sulfur‐ and carbon‐bridged triphenylamine (SCBT) units linked by a 1,8‐naphthalene moiety to obtain the corresponding π‐mer and π‐dimer as crystalline materials. Single‐crystal X‐ray diffraction analyses revealed that these cationic species adopt almost perfectly overlapping face‐to‐face close π‐stacking structures. As the degree of oxidation increases from the neutral form to the monocation and the dication, the interatomic S–S distance decreases drastically from 5.35 to 3.03 Å. The injection of electron spins into the neutral species effectively induces covalent‐like bonding interactions between the sulfur atoms and changes the degree of structural freedom of the molecule. The salt of the π‐mer exhibited an electrical conductivity of 1.9 × 10−6 S cm−1 at room temperature. The injection of spins by chemical oxidation also dramatically changed the dielectric response by generating dipole moments that affect the symmetry of the molecule.
Scientific journal, English

Highly planar ground triplet biradical 5-trifluoromethyl-1,3-phenylene bis(tert-butyl nitroxide) testing the limit of stabilization
N. Haga; T. Ishida
Corresponding, Tetrahedron, Elsevier BV, 179, 134614/1-7, Mar. 2025, Peer-reviwed
Scientific journal, English

Four-Center Two-Electron Bond in 3,6-Di(tert-butyl)naphthalene-1,8-diyl Bis(tert-butyl Nitroxide)
R. Takano; R. Uesugi; D. Iida; T. Ishida
Corresponding, Asian Journal of Organic Chemistry, 14, e202500049/1-11, Feb. 2025, Peer-reviwed
Scientific journal, English

Magnetically Diluted Dy3+ and Yb3+ Squarates Showing Relaxation Tuning and Matrix Dependence
R. Takano; T. Ishida
Corresponding, Molecules, MDPI AG, 30, 2, 356/1-15, 16 Jan. 2025, Peer-reviwed, Invited, A new compound [Y2(sq)3(H2O)4] (Y-sq; sq = squarate (C4O42–)) was prepared and structurally characterized. Since the RE-sq family (RE = Y, Dy, Yb, Lu) gave isostructural crystals, the objective of this study is to explore the effects of diamagnetic dilution on the SIM behavior through systematic investigation and comparison of diamagnetically diluted and undiluted forms. The 1%-Diluted Dy compounds, Dy@Y-sq and Dy@Lu-sq, showed AC magnetic susceptibility peaks without any DC bias field (HDC), whereas undiluted Dy-sq showed no AC out-of-phase response under the same conditions. The Orbach and Raman mechanisms are assumed in the Arrhenius plots, giving Ueff/kB = 139(5) and 135(8) K for Dy@Y-sq and Dy@Lu-sq, respectively, at HDC = 0 Oe. In contrast, Yb@Y-sq and Yb@Lu-sq behaved different; Yb@Y-sq can be regarded as a field-induced SIM because AC out-of-phase response was recorded only when HDC was present. On the other hand, Yb@Lu-sq showed a relaxation independent from temperature around 2 K at HDC = 0 Oe, possibly ascribed to a quantum-tunneling-magnetization mechanism. Applying HDC = 400 Oe afforded Ueff = 61.2(14) and 62.5(16) K for Yb@Y-sq and Yb@Lu-sq, respectively. The Y/Lu matrix dependence may be related to spin–phonon coupling. The dilution technique is a facile and versatile tool for modification of SIM characteristics.
Scientific journal, English

Paramagnetic Monomer and Diamagnetic Polymer of 5-(1-Adamantyl)-1,3-phenylene Bis(tert-butyl Nitroxide)
S. Ueno; S.-i. Takeshi; S. Suzuki; T. Ishida
Corresponding, Chemistry Letters, 54, 1, 239/1-6, Jan. 2025, Peer-reviwed
Scientific journal, English

Diamagnetic Precursor to Biradical by Means of a Thermal Trigger: A Head-to-Tail (N–O)2 Four-Membered Ring Formed in Naphthalene-1,8-diyl Bis(tert-butyl Nitroxide)
R. Uesugi; R. Takano; T. Ishida
Corresponding, The Journal of Organic Chemistry (Supplementary Journal Cover), 89, 17400-17407, Nov. 2024, Peer-reviwed
Scientific journal, English

First TPymT-Ln Complexes (TPymT = 2,4,6-Tris(2-pyrimidyl)-1,3,5-triazine; Ln = Eu, Gd, Tb, Dy): Solvothermal Synthesis, Structure, Magnetic and Photoluminescent Properties
B. Ay; R. Takano; T. Ishida
Corresponding, Solid State Sciences, Elsevier BV, 157, 107723/1-11, Oct. 2024, Peer-reviwed
Scientific journal, English

Temperature-scan-rate dependent SCO hysteresis found in a tetramethylphosphonium tripodal ferrate(II) salt
M. Yamasaki; Y. Noguchi; T. Ishida
Corresponding, Inorganica Chimica Acta, Elsevier BV, 569, 122112/1-7, May 2024, Peer-reviwed
Scientific journal, English

Biradical pincers involving two phenylene, biphenylene or terphenylene arms: Evidence for approach of two terminal nitroxides
R. Uesugi; R. Takano; T. Ishida
Corresponding, Tetrahedron, 156, 133929/1-7, Mar. 2024, Peer-reviwed
Scientific journal, English

A Triplet/Singlet Ground-State Switch via the Steric Inhibition of Conjugation in 4,6-Bis(trifluoromethyl)-1,3-phenylene Bisnitroxide
N. Haga; T. Ishida
Corresponding, Molecules, MDPI AG, 29, 70/1-14, 21 Dec. 2023, Peer-reviwed, Ground triplet 4,6-bis(trifluoromethyl)-1,3-phenylene bis(tert-butyl nitroxide) (TF2PBN) reacted with [Y(hfac)3(H2O)2] (hfac = 1,1,1,5,5,5-hexafluoropentane-2,4-dionate), affording a doubly hydrogen-bonded adduct [Y(hfac)3(H2O)2(TF2PBN)]. The biradical was recovered from the adduct through recrystallization. Crystallographic analysis indicates that the torsion angles (|θ| ≤ 90°) between the benzene ring and nitroxide groups were 74.9 and 84.8° in the adduct, which are larger than those of the starting material TF2PBN. Steric congestion due to o-trifluoromethyl groups gives rise to the reduction of π-conjugation. Two hydrogen bonds enhance this deformation. Susceptometry of the adduct indicates a ground singlet with 2J/kB = −128(2) K, where 2J corresponds to the singlet–triplet gap. The observed magneto-structure relation is qualitatively consistent with Rajca’s pioneering work. A density functional theory calculation at the UB3LYP/6-311+G(2d,p) level using the atomic coordinates determined provided a result of 2J/kB = −162.3 K for the adduct, whilst the corresponding calculation on intact TF2PBN provided +87.2 K. After a comparison among a few known compounds, the 2J vs. |θ| plot shows a negative slope with a critical torsion of 65(3)°. The ferro- and antiferromagnetic coupling contributions are balanced in TF2PBN, being responsible for ground-state interconversion by means of small structural perturbation like hydrogen bonds.
Scientific journal, English

Continuous condensed triplet accumulation for irradiance-induced anticounterfeit afterglow
E. H. Badriyah; K. Hayashi; B. Sk; R. Takano; T. Ishida; S. Hirata
Advanced Science, 10, 2304374/1-11, Oct. 2023, Peer-reviwed
Scientific journal, English

Metal-organodiphosphonate chemistry: Hydrothermal syntheses and structures of two novel copper(II) coordination polymers with o-xylylenediphosphonic acid and 4,4'-bipyridine ligands
B. Ay; R. Takano; T. Ishida
Corresponding, Bulletin of the Chemical Society of Japan, 96, 1129-1138, Oct. 2023, Peer-reviwed
Scientific journal, English

Bilayered Lanthanide Squarate Hydrates (Ln = Eu to Lu) and Magnetization Reversal Barriers 21 K for Ln = Tm and 57 K for Yb
R. Takano; K. Masuda; K. Cho; Y. Kitagawa; T. Ishida
Last, Dalton Transaction (Journal Inside Front Cover), RSC, 52, 8873-8882, May 2023, Peer-reviwed
Scientific journal, English

Tricopper(II) Bis(2-((hydrogen Phosphonato)methyl)benzylphosphonate) as a Layered Oxo-bridged Copper(II) Coordination Polymer: Synthesis, Structure, Magnetic Property, and Catalytic Activity
B. Ay; R. Takano; T. Ishida; E. Yildiz
Polyhedron, Elsevier, 226, 116038/1-7, Oct. 2022, Peer-reviwed
Scientific journal, English

Synthesis, Crystal Structure, and Luminescent Property of a Three-Dimensional Coordination Polymer from Europium(III) Carbonate Hemioxalate Hydrate
R. Takano; T. Ishida; B. Ay
Corresponding, CrystEngComm, RSC, 24, 7786-7792, Sep. 2022, Peer-reviwed
Scientific journal, English

Ferromagnetic 2p-2p and 4f-2p Couplings in a Macrocycle from Two Biradicals and Two Gadolinium(III) Ions
S. Ito; T. Yoshitake; T. Ishida
Corresponding, Molecules, mdpi, 27, 4930/1-14, Aug. 2022, Peer-reviwed
Scientific journal, English

Rare-Earth (RE = Y, Gd, Tb, Dy, Ho, and Er) Chains Bridged with a Triplet Biradical and Magnetic Hysteresis Recorded for RE = Tb
S. Ito; R. Takano; S.-i. Hatanaka; T. Ishida
Last, Inorganic Chemistry (Journal Inside Front Cover), ACS, 61, 10619-10623, Jul. 2022, Peer-reviwed
Scientific journal, English

Pincer-type Bisnitroxide Radicals Involving Tetramethylenedioxy and o-Xylylenedioxy Bridges
Y. Yamaguchi; R. Takano; T. Ishida
Last, Tetrahedron Letters (Journal Front Cover), Elsevier, 99, 153841/1-5, Jun. 2022, Peer-reviwed
Scientific journal, English

Structures and Magnetic Properties of Carbonato-Bridged Hexanuclear NiII4LnIII2 (Ln = Gd, Tb, Dy) Complexes Formed by Atmospheric Carbon Dioxide Fixation in the Absence of an External Base
S. Maity; T. K. Ghosh; S. Ito; P. Bhunia; T. Ishida; A. Ghosh
Crystal Growth & Design, ACS, 22, 4332-4342, Jun. 2022, Peer-reviwed
Scientific journal, English

Lanthanide Induced Variability in Localised CoII Geometries of Four Triangular L3Co3IILnIII Complexes
T. N. Dais; R. Takano; T. Ishida; P. G. Plieger
RSC Advances, RSC, 12, 4828-4835, Mar. 2022, Peer-reviwed
Scientific journal, English

[Tb4(OH)4]-Cuboid Complex Dianion Stabilized with Six Carboxylate Bridges and Four Diketonate Caps
Y. Yamaguchi; T. Ishida
Last, Crystals, mdpi, 12, 402/1-7, Mar. 2022, Peer-reviwed
Scientific journal, English

Metallocyclic CuII-LnIII Single-Molecule Magnets from the Self-Assembly of 1,4-Diformylnaphthalene-2,3-diol
T. N. Dais; R. Takano; Y. Yamaguchi; T. Ishida; P. G. Plieger
ACS Omega, ACS, 7, 5537-5546, Feb. 2022, Peer-reviwed
Scientific journal, English

Self-Assembly of Non-Macrocyclic Triangular Ni3Ln Clusters
T. N. Dais; R. Takano; T. Ishida; P. G. Plieger
Dalton Transactions, RSC, 51, 1446-1453, Jan. 2022, Peer-reviwed
Scientific journal, English

Strong Antiferromagnetic Interaction in a Gadolinium(III) Complex with Methoxy-TEMPO Radical: A Relation between the Coupling and the Gd-O-N Angle
T. Nakamura; T. Kanetomo; T. Ishida
Inorganic Chemistry, American Chemical Society (ACS), 60, 2, 535-539, Dec. 2021, Peer-reviwed
Scientific journal, English

Polymeric Terbium(III) Squarate Hydrate as a Luminescent Magnet
R. Takano; T. Ishida
Crystals, mdpi, 11, 1221/1-9, Oct. 2021, Peer-reviwed
Scientific journal, English

Molecular S = 2 High-Spin, S = 0 Low-Spin and S = 0 ⇄ 2 Spin-Transition/-Crossover Nickel(II)-Bis(nitroxide) Coordination Compounds
T. Ishida; S. Ito; Y. Homma; Y. Kyoden
Inorganics (Journal Front Cover), MDPI, 9, 10/1-28, Jan. 2021, Peer-reviwed, Invited
Scientific journal, English

SMM Behaviour of Heterometallic Dinuclear CuIILnIII (Ln = Tb and Dy) Complexes Derived from N2O3 Donor Unsymmetrical Ligands
S. Maity; P. Bhunia; K. Ichihashi; T. Ishida; A. Ghosh
New Journal of Chemistry, RSC, 44, 6197-6205, 2020, Peer-reviwed
Scientific journal, English

An Indication of Spin-Transition Accompanied by Order-Disorder Structural Transformation in [Ni(phpyNO)2(NCS)2] (phpyNO = tert-Butyl 5-Phenyl-2-pyridyl Nitroxide)
Y. Kyoden; T. Ishida
RSC Advances, RSC, 10, 16009-16015, 2020, Peer-reviwed
Scientific journal, English

Odd-Even Effect on the Spin-Crossover Temperature in Iron(II) Complex Series Involving an Alkylated or Acyloxylated Tripodal Ligand
A. Kashiro; W. Kohno; T. Ishida
Inorganic Chemistry, ACS, 59, 10163-10171, 2020, Peer-reviwed
Scientific journal, English

Practically Diamagnetic Macrocycle Consisting of Nickel-Biradical Heterospins with the Largest Out-of-Plane Torsion at Coordination Bonds
S. Ito; T. Ishida
Chemistry Letters, 日本化学会, 49, 1062-1065, 2020, Peer-reviwed
Scientific journal, English

2,7-Di-tert-butyl-9,9’(10H,10’H)-spirobiacridine-10,10’-dioxyl as a Ground Triplet Biradical: the Role of tert-Butylation
K. Ichihashi; T. Kanetomo; M. Enomoto; T. Ishida
Tetrahedron Letters, Elsevier, 61, 43, 152428/1-5, 2020, Peer-reviwed
Scientific journal, English

A Hidden Coordination-Bond Torsional Deformation as a Sign of Possible Spin Transition in Nickel(II)-Bis(nitroxide) Compounds
Y. Kyoden; T. Ishida
Molecules, mdpi, 25, 3790/1-11, 2020, Peer-reviwed
Scientific journal, English

Modulating the Ground State, Stability and Charge Transport in OFETs of Biradicaloid Hexahydro-diindenopyrene Derivatives and a Proposed Method to Estimate the Biradical Character
T. Jousselin-Oba; M. Mamada; A. Okazawa; J. Marrot; T. Ishida; C. Adachi; A. Yassar; M. Frigoli
Chemical Science, Royal Society of Chemistry (RSC), 11, 44, 12194-12205, 2020, Peer-reviwed,

Biradicaloid HDIP derivatives show that the ΔE_S–T gap does not follow the reverse trend of the biradical character but depends more on the delocalization of the radical centres at the outer rings.

Scientific journal, English

Methoxy-TEMPO and Gadolinium(III) Complex Showing the Strongest Antiferromagnetic Interaction. A Relation between the Coupling and Gd-O-N Angle
T. Nakamura; T. Ishida
Inorganic Chemistry, 99, 9999, 2020, Peer-reviwed
Scientific journal, English

Effects of ZnO Nanoparticles on the Antifungal Performance of Fe3O4/ZnO Nanocomposites Prepared from Natural Sand
A. Taufiq; H. N. Ulya; C. I. Yogihati; Sunaryono; N. Hidayat; N. Mufti; Masruroh; S. Soda; T. Ishida
Advances in Natural Sciences: Nanoscience and Nanotechnology, IOPscience, 11, 045004/1-10, 2020, Peer-reviwed
Scientific journal, English

結晶固体中で有機分子は動く：緩やかな構造転移とスピン転移/クロスオーバー
嘉代 敦; 京田幸也; 岡澤 厚; 石田尚行
有機合成化学協会誌, 有機合成化学協会, 77, 684-695, Jul. 2019, Peer-reviwed, Invited
Scientific journal, Japanese

A Series of CuII−LnIII Complexes of an N2O3 Donor Asymmetric Ligand and a Possible CuII−TbIII SMM Candidate in No Bias Field
P. Mahapatra; N. Koizumi; T. Kanetomo; T. Ishida; A. Ghosh
New Journal of Chemistry, RSC, 43, 2, 634-643, 2019, Peer-reviwed
Scientific journal, English

Moving Molecules in Crystalline Solids: Gradual Structure Transition and Spin Transition/Crossover
T. Ishida
IOP Conference Series: Materials Science and Engineering, Institute of Physics, 515, 012001/1-16, 2019, Peer-reviwed, Invited
International conference proceedings, English

Synthetic Investigation for Spiro-Junctioned Biradical Compounds
K. Ichihashi; M. Okamura; T. Kanetomo; T. Ishida
AIP Conference Proceedings, AIP, 2067, 020011/1-5, 2019, Peer-reviwed
International conference proceedings, English

Biphenyl-Hinged Bisnitroxide Biradicals toward Intramolecular Para- and Diamagnetic Switching
M. Arai; T. Ishida
AIP Conference Proceedings, AIP, 2067, 020008/1-7, 2019, Peer-reviwed
International conference proceedings, English

Structures and Magnetic Properties of Lanthanide Complexes Involving Ground Triplet Bisnitroxide Radicals
H. Sekine; T. Ishida
AIP Conference Proceedings, AIP, 2067, 020003/1-3, 2019, Peer-reviwed
International conference proceedings, English

Iron(II) and 1,1,1-Tris(2-pyridyl)nonadecane Complex Showing an Order-Disorder-Type Structural Transition and Spin-Crossover Synchronized over Both Conformers
A. Kashiro; K. Some; Y. Kobayashi; T. Ishida
Inorganic Chemistry, ACS, 58, 7672-7676, 2019, Peer-reviwed
Scientific journal, English

Ground Triplet Spirobiradical: 2,2’,7,7’-tetra(tert-butyl)-9,9’(10H,10’H)-spirobiacridine-10,10’- dioxyl
T. Kanetomo; K. Ichihashi; M. Enomoto; T. Ishida
Organic Letters (Journal Inside Front Cover), ACS, 21, 11, 3906-3912, 2019, Peer-reviwed
Scientific journal, English

High-Spin and Incomplete Spin-Crossover Polymorphs in Doubly Chelated [Ni(L)2Br2] (L = tert-Butyl 5-Phenyl-2-pyridyl Nitroxide)
Y. Kyoden; Y. Homma; T. Ishida
Inorganic Chemistry, ACS, 58, 10743-10755, 2019, Peer-reviwed
Scientific journal, English

Structure-fluorescence relationship of push-pull 2-phenylbenzothiazole derivatives designed based on the firefly light-emitter
Tomoya Fujikawa; Takuya Uehara; Minoru Yamaji; Takuya Kanetomo; Takayuki Ishida; Shojiro Maki; Takashi Hirano
Tetrahedron Letters, Elsevier Ltd, 59, 14, 1431-1434, 04 Apr. 2018, Peer-reviwed
Scientific journal, English

Cobalt(II) terpyridin-4′-yl nitroxide complex as an exchange-coupled spin-crossover material
Akihiro Ondo; Takayuki Ishida
Crystals, MDPI AG, 8, 4, 155/1-12, 01 Apr. 2018, Peer-reviwed
Scientific journal, English

A New S = 0 ⇆ S = 2 "spin-Crossover" Scenario Found in a Nickel(II) Bis(nitroxide) System
Yuta Homma; Takayuki Ishida
Chemistry of Materials, American Chemical Society, 30, 6, 1835-1838, 27 Mar. 2018, Peer-reviwed
Scientific journal, English

Unexpected complexes from meta -phenylene bis(tert -butyl nitroxides) and gadolinium(III) 1,1,1,5,5,5-hexafluoropentane-2,4-dionate
Hiroyasu Sekine; Takayuki Ishida
AIP Conference Proceedings, American Institute of Physics Inc., 1929, 020022/1-6, 22 Jan. 2018, Peer-reviwed
International conference proceedings, English

Substituent effect in spin-crossover behavior of iron(II)-Ar-pybox complexes (Ar-pybox = 4-aryl-2,6-bis(oxazolin-2-yl)pyridine)
Akifumi Kimura; Takayuki Ishida
AIP Conference Proceedings, American Institute of Physics Inc., 1929, 020025/1-7, 22 Jan. 2018, Peer-reviwed
International conference proceedings, English

Unexpected complexes of a [3+3] cycloadduct from biphenyl-3,5-diyl bis(tert-butyl nitroxide) with gadolinium(III) 1,1,1,5,5,5-hexafluoropentane-2,4-dionate
Hiroyasu Sekine; Takayuki Ishida
Chemistry Letters, Chemical Society of Japan, 47, 1, 74-77, 2018, Peer-reviwed
Scientific journal, English

Preparation of Superparamagnetic Fe3O4 Nanoparticles from Iron Sand Mediated by Soft Template and Their Performance as Antibacterial Agent
A. Taufiq; A.F. Muyasaroh; S. Sunaryono; H. Susanto; E. Suarsimi; N. Hidayat; N. Mufti; A. Okazawa; T. Ishida; Darminto
The Journal of Magnetics, The Korean Magnetics Society, 23, 337-344, 2018, Peer-reviwed
Scientific journal, English

Spin-Crossover Temperature Predictable from DFT Calculation for Iron(II) Complexes with 4-Substituted pybox and Related Heteroaromatic Ligands
A. Kimura; T. Ishida
ACS Omega, ACS, 3, 6737-6747, 2018, Peer-reviwed
Scientific journal, English

A Triplet Biradical with Double Bidentate Sites Based on tert-Butyl Pyridyl Nitroxides as a Candidate for Strong Ferromagnetic Couplers
A. Okazawa; Y. Terakado; T. Ishida; N. Kojima
New Journal of Chemistry (Journal Back Cover), RSC, 42, 17874-17878, 2018, Peer-reviwed
Scientific journal, English

Study on imidazolate-bridged divalent copper ion complexes capped with tris(1-pyrazolyl)methane
Tamizo Kogane; Akihiro Ondo; Masaru Yamasaki; Takuya Kanetomo; Takayuki Ishida
POLYHEDRON, 136, 64-69, Nov. 2017, Peer-reviwed
Scientific journal, English

Exchange-coupled terbium-radical complex Tb-phNO showing slow reversal of magnetization
Takuya Kanetomo; Masanori Yasui; Takayuki Ishida
POLYHEDRON, 136, 30-34, Nov. 2017, Peer-reviwed
Scientific journal, English

Chemical trend on the lanthanide-radical exchange coupling
Takayuki Ishida; Takeshi Nakamura; Takumi Kihara; Hiroyuki Nojiri
POLYHEDRON, 136, 149-154, Nov. 2017, Peer-reviwed
Scientific journal, English

Structural variations in (CuL)(2)Ln complexes of a series of lanthanide ions with a salen-type unsymmetrical Schiff base(H2L): Dy and Tb derivatives as potential single-molecule magnets
Prithwish Mahapatra; Soumavo Ghosh; Naoki Koizumi; Takuya Kanetomo; Takayuki Ishida; Michael G. B. Drew; Ashutosh Ghosh
DALTON TRANSACTIONS, 46, 36, 12095-12105, Sep. 2017, Peer-reviwed
Scientific journal, English

Pybox-iron(II) spin-crossover complexes with substituent effects from the 4-position of the pyridine ring (Pybox = 2,6-Bis(oxazolin-2-yl)pyridine)
Akifumi Kimura; Takayuki Ishida
Inorganics, MDPI Multidisciplinary Digital Publishing Institute, 5, 3, 52/1-12, 01 Sep. 2017, Peer-reviwed, Invited
Scientific journal, English

Forced proximity of nitroxide groups in pincer compounds with a xanthene spacer
Naoki Koizumi; Takayuki Ishida
TETRAHEDRON LETTERS, 58, 29, 2804-2808, Jul. 2017, Peer-reviwed
Scientific journal, English

Spin-Parity Behavior in the Exchange-Coupled Lanthanoid-Nitroxide Molecular Magnets
T. Ishida
IOP Conference Series: Materials Science and Engineering, Institute of Physics Publishing, 202, 1, 012001/1-10, 31 May 2017, Peer-reviwed, Invited
International conference proceedings, English

A ground triplet dinuclear copper(II) spiro-complex involving tetraiminoneopentane
Akifumi Kimura; Takayuki Ishida
POLYHEDRON, 126, 45-48, Apr. 2017, Peer-reviwed
Scientific journal, English

Giant Exchange Coupling Evidenced with a Magnetization Jump at 52 T for a Gadolinium-Nitroxide Chelate
Takuya Kanetomo; Takumi Kihara; Atsushi Miyake; Akira Matsuo; Masashi Tokunaga; Koichi Kindo; Hiroyuki Nojiri; Takayuki Ishida
INORGANIC CHEMISTRY, 56, 6, 3310-3314, Mar. 2017, Peer-reviwed
Scientific journal, English

Notably Strong Antiferromagnetic Interaction in a Methylene-bridged Bis(dihydrophenanthridin-N-oxyl)
Takuya Kanetomo; Takayuki Ishida
CHEMISTRY LETTERS, 46, 2, 188-190, Feb. 2017, Peer-reviwed
Scientific journal, English

Circular and Chainlike Copper(II)-Lanthanide(III) Complexes Generated by Assembly Reactions of Racemic and Chiral Copper(II) Cross-Linking Ligand Complexes with Ln(III)(NO3)(3)center dot 6H(2)O (Ln(II) = Gd-III, Tb-III, Dy-III)
Takahiro Ueno; Takeshi Fujinami; Naohide Matsumoto; Masaki Furusawa; Ryo Irie; Nazzareno Re; Takuya Kanetomo; Takayuki Ishida; Yukinari Sunatsuki
INORGANIC CHEMISTRY, 56, 3, 1679-1695, Feb. 2017, Peer-reviwed
Scientific journal, English

Development of Biradical Ligands toward [2x2] Molecular Grids
Kana Ichihashi; Yasuhiro Mazaki; Shouhei Ohba; Takayuki Ishida
IRAGO CONFERENCE 2016: 360 DEGREE OUTLOOK ON CRITICAL SCIENTIFIC AND TECHNOLOGICAL CHALLENGES FOR A SUSTAINABLE SOCIETY, 1807, 020018/1-7, 2017, Peer-reviwed
International conference proceedings, English

Structures and Magnetic Properties of Transition Metal Complexes Involving 2,2 '-Bipyridin-6-yl Nitroxide
Akihiro Ondo; Takayuki Ishida
IRAGO CONFERENCE 2016: 360 DEGREE OUTLOOK ON CRITICAL SCIENTIFIC AND TECHNOLOGICAL CHALLENGES FOR A SUSTAINABLE SOCIETY, 1807, 020023/1-6, 2017, Peer-reviwed
International conference proceedings, English

An iron(II) complex tripodally chelated with 1,1,1-tris(pyridin-2-yl)ethane showing room-temperature spin-crossover behaviour
Takayuki Ishida; Takuya Kanetomo; Masaru Yamasaki
ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY, 72, 797-+, Nov. 2016, Peer-reviwed, Invited
Scientific journal, English

Spectroscopic and magnetic studies of erbium(III)-TEMPO complex as a potential single-molecule magnet: Interplay of the crystal-field and exchange coupling effects
Miroslaw Karbowiak; Czeslaw Rudowicz; Takeshi Nakamura; Rina Murakami; Takayuki Ishida
CHEMICAL PHYSICS LETTERS, 662, 163-168, Oct. 2016, Peer-reviwed
Scientific journal, English

Strongest Ferromagnetic Coupling in Designed Gadolinium(III)-Nitroxide Coordination Compounds
Takuya Kanetomo; Toru Yoshitake; Takayuki Ishida
INORGANIC CHEMISTRY, 55, 16, 8140-8146, Aug. 2016, Peer-reviwed
Scientific journal, English

Syntheses, Crystal Structure and Magnetic Properties of an Unprecedented One-Dimensional Coordination Polymer Derived from an {(NiL)(2)Ln} Node and a Pyrazine Spacer (H-2 L = N, N '-Bis(salicylidene)-1,3-propanediamine, Ln = Gd, Tb and Dy)
Soumavo Ghosh; Prithwish Mahapatra; Takuya Kanetomo; Michael G. B. Drew; Takayuki Ishida; Ashutosh Ghosh
CHEMISTRYSELECT, 1, 11, 2722-2729, Jul. 2016, Peer-reviwed
Scientific journal, English

Luminescent Dy-III single ion magnets with same N6O3 donor atoms but different donor atom arrangements, 'fac'-[Dy-III(HLDL-ala)(3)]center dot 8H(2)O and 'mer'-[Dy-III(HLDL-phe)(3)]center dot 7H(2)O
Daisuke Hamada; Takeshi Fujinami; Suguru Yamauchi; Naohide Matsumoto; Naotaka Mochida; Takayuki Ishida; Yukinari Sunatsuki; Masanobu Tsuchimoto; Cecilia Coletti; Nazzareno Re
POLYHEDRON, 109, 120-128, Apr. 2016, Peer-reviwed
Scientific journal, English

Ferromagnetic Chains of Ground Triplet 5-Methoxy-1,3-phenylene Bis(tert-butyl nitroxide)
Toru Yoshitake; Takayuki Ishida
CHEMISTRY LETTERS, 45, 4, 391-393, Apr. 2016, Peer-reviwed
Scientific journal, English

Thermally Activated Paramagnets from Diamagnetic Polymers of Biphenyl-3,5-diyl Bis(tert-butyl Nitroxides) Carrying Methyl and Fluoro Groups at the 2 '- and 5 '-Positions
Toru Yoshitake; Hiroki Kudo; Takayuki Ishida
CRYSTALS, 6, 3, 30/1-9, Mar. 2016, Peer-reviwed
Scientific journal, English

Trigonal Bipyramid Ni3Cl3O2 Cluster Showing the High-Spin S=3 Ground State with Uniaxial Magnetic Anisotropy
Yumi Ida; Hiroyuki Nojiri; Takayuki Ishida
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 89, 2, 226-236, Feb. 2016, Peer-reviwed
Scientific journal, English

A designed room-temperature triplet ligand from pyridine-2,6-diyl bis(tert-butyl nitroxide)
Hinako Kawakami; Asato Tonegawa; Takayuki Ishida
DALTON TRANSACTIONS, 45, 4, 1306-1309, 2016, Peer-reviwed
Scientific journal, English

Luminescent Single-Ion Magnets from Lanthanoid(III) Complexes with Monodentate Ketone Ligands
Takuya Kanetomo; Takayuki Ishida
IRAGO CONFERENCE 2015: 360 DEGREE OUTLOOK ON CRITICAL SCIENTIFIC AND TECHNOLOGICAL CHALLENGES FOR A SUSTAINABLE SOCIETY, 1709, 020015/1-6, 2016, Peer-reviwed
International conference proceedings, English

Magnetic Exchange Interaction in Gadolinium(III) Complex Having Aliphatic Nitroxide Radical TEMPO
Takeshi Nakamura; Takayuki Ishida
IRAGO CONFERENCE 2015: 360 DEGREE OUTLOOK ON CRITICAL SCIENTIFIC AND TECHNOLOGICAL CHALLENGES FOR A SUSTAINABLE SOCIETY, 1709, 020016/1-3, 2016, Peer-reviwed
International conference proceedings, English

Pyridine-2,6-diyl Dinitroxides as Room-Temperature Triplet Ligands
Hinako Kawakami; Asato Tonegawa; Takayuki Ishida
IRAGO CONFERENCE 2015: 360 DEGREE OUTLOOK ON CRITICAL SCIENTIFIC AND TECHNOLOGICAL CHALLENGES FOR A SUSTAINABLE SOCIETY, 1709, 020017/1-6, 2016, Peer-reviwed
International conference proceedings, English

Strong Ferromagnetic Exchange Interactions in Hinge-like Dy(O2Cu)(2) Complexes Involving Double Oxygen Bridges
Yumi Ida; Soumavo Ghosh; Ashutosh Ghosh; Hiroyuki Nojiri; Takayuki Ishida
INORGANIC CHEMISTRY, 54, 19, 9543-9555, Oct. 2015, Peer-reviwed
Scientific journal, English

First Iron(II) Spin-crossover Complex with an N5S Coordination Sphere
Masaru Yamasaki; Takayuki Ishida
CHEMISTRY LETTERS, 44, 7, 920-921, Jul. 2015, Peer-reviwed
Scientific journal, English

Relationship between Torsion and Anisotropic Exchange Coupling in a Tb-III-Radical-Based Single-Molecule Magnet
Michael L. Baker; Takuya Tanaka; Rina Murakami; Seiko Ohira-Kawamura; Kenji Nakajima; Takayuki Ishida; Hiroyuki Nojiri
INORGANIC CHEMISTRY, 54, 12, 5732-5738, Jun. 2015, Peer-reviwed
Scientific journal, English

Structures and magnetic properties of three compounds from imidazolate-bridged copper(II) pyrazolylborate complexes
Tamizo Kogane; Takuya Kanetomo; Hiroki Muroyama; Takayuki Ishida
POLYHEDRON, 89, 149-154, Mar. 2015, Peer-reviwed
Scientific journal, English

Strong exchange couplings in lanthanide complexes with an aliphatic nitroxide radical 1,1,3,3-tetramethylisoindolin-2-oxyl
Takeshi Nakamura; Takayuki Ishida
POLYHEDRON, 87, 302-306, Feb. 2015, Peer-reviwed
Scientific journal, English

Spin-crossover thermal hysteresis and light-induced effect on iron(II) complexes with tripodal tris(2-pyridyl)methanol
Masaru Yamasaki; Takayuki Ishida
POLYHEDRON, 85, 795-799, Jan. 2015, Peer-reviwed
Scientific journal, English

Synthesis of mixed-valence hexanuclear Mn(II/III) clusters from its Mn(II) precursor: variations of catecholase-like activity and magnetic coupling
Paramita Kar; Yumi Ida; Takuya Kanetomo; Michael G. B. Drew; Takayuki Ishida; Ashutosh Ghosh
DALTON TRANSACTIONS, 44, 21, 9795-9804, 2015, Peer-reviwed
Scientific journal, English

Intermediate-paramagnetic phases with a half and a quarter spin entities in fluorinated biphenyl-3,5-diyl bis(tert-butyl nitroxides)
Takuya Konno; Hiroki Kudo; Takayuki Ishida
JOURNAL OF MATERIALS CHEMISTRY C, 3, 30, 7813-7818, 2015, Peer-reviwed
Scientific journal, English

Heating-rate dependence of spin-crossover hysteresis observed in an iron(II) complex having tris(2-pyridyl)methanol
Masaru Yamasaki; Takayuki Ishida
JOURNAL OF MATERIALS CHEMISTRY C, 3, 30, 7784-7787, 2015, Peer-reviwed
Scientific journal, English

Single-molecule magnet involving strong exchange coupling in terbium(III) complex with 2,2 '-bipyridin-6-yl tert-butyl nitroxide
Takuya Kanetomo; Shunsuke Yoshii; Hiroyuki Nojiri; Takayuki Ishida
INORGANIC CHEMISTRY FRONTIERS, 2, 9, 860-866, 2015, Peer-reviwed
Scientific journal, English

Spin-Crossover Hysteresis of [Fe^II(LHiPr)2(NCS)2] (LHiPr = N-2-Pyridylmethylene-4-isopropylaniline) Accompanied by Isopropyl Conformation Isomerism
N. Mochida; A. Kimura; T. Ishida
Magnetochemistry, MDPI, 1, 17-27, 2015, Peer-reviwed, Invited
Scientific journal, English

Metal-organic frameworks from two-dimensional copper(II) complexes bridged with N-methylpyrazine-2-carboxamide
Mizuki Yoshida; Takuya Kanetomo; Hiroki Muroyama; Takayuki Ishida; Tamizo Kogane
POLYHEDRON, 81, 493-498, Oct. 2014, Peer-reviwed
Scientific journal, English

Crystal Field Splitting of the Ground State of Terbium(III) and Dysprosium(III) Complexes with a Triimidazolyl Tripod Ligand and an Acetate Determined by Magnetic Analysis and Luminescence
Seira Shintoyo; Keishiro Murakami; Takeshi Fujinami; Naohide Matsumoto; Naotaka Mochida; Takayuki Ishida; Yukinari Sunatsuki; Masayuki Watanabe; Masanobu Tsuchimoto; Jerzy Mrozinski; Cecilia Coletti; Nazzareno Re
INORGANIC CHEMISTRY, 53, 19, 10359-10369, Oct. 2014, Peer-reviwed
Scientific journal, English

Strongest Exchange Coupling in Gadolinium(III) and Nitroxide Coordination Compounds
Takuya Kanetomo; Takayuki Ishida
INORGANIC CHEMISTRY, 53, 20, 10794-10796, Oct. 2014, Peer-reviwed
Scientific journal, English

Synthesis, Structure, Luminescence, and Magnetic Properties of a Single-Ion Magnet "mer"-[Tris(N-[ (imidazol-4-yl)-methylidene]-DL-phenylalaninato)terbium(III) and Related "fac"-DL-Alaninato Derivative
Suguru Yamauchi; Takeshi Fujinami; Naohide Matsumoto; Naotaka Mochida; Takayuki Ishida; Yukinari Sunatsuki; Masayuki Watanabe; Masanobu Tsuchimoto; Cecilia Coletti; Nazzareno Re
INORGANIC CHEMISTRY, 53, 12, 5961-5971, Jun. 2014, Peer-reviwed
Scientific journal, English

Linker Stoichiometry-Controlled Stepwise Supramolecular Growth of a Flexible Cu2Tb Single Molecule Magnet from Monomer to Dimer to One-Dimensional Chain
Soumavo Ghosh; Yumi Ida; Takayuki Ishida; Ashutosh Ghosh
CRYSTAL GROWTH & DESIGN, 14, 5, 2588-2598, May 2014, Peer-reviwed
Scientific journal, English

Multifunctional pi-Expanded Macrocyclic Oligothiophene 6-Mers and Related Macrocyclic Oligomers
Masahiko Iyoda; Keita Tanaka; Hideyuki Shimizu; Masashi Hasegawa; Tohru Nishinaga; Tomohiko Nishiuchi; Yoshihito Kunugi; Takayuki Ishida; Hiroyuki Otani; Hiroyasu Sato; Koji Inukai; Kazukuni Tahara; Yoshito Tobe
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 136, 6, 2389-2396, Feb. 2014, Peer-reviwed
Scientific journal, English

Preparation and characterization of [Gd(hfac)(3)(DTBN)(H2O)] (DTBN = di-t-butyl nitroxide). Ferromagnetic Gd3+-Gd3+ super-superexchange
Takuya Kanetomo; Takayuki Ishida
CHEMICAL COMMUNICATIONS, 50, 19, 2529-2531, 2014, Peer-reviwed
Scientific journal, English

Doubly TEMPO-coordinated gadolinium(III), lanthanum(III), and yttrium(III) complexes. Strong superexchange coupling across rare earth ions
Rina Murakami; Takeshi Nakamura; Takayuki Ishida
DALTON TRANSACTIONS, 43, 15, 5893-5898, 2014, Peer-reviwed
Scientific journal, English

Polymeric one- and two-dimensional copper(I) iodide complexes showing photoluminescence tunable by azaaromatic ligands
Nobuo Kitada; Takayuki Ishida
CRYSTENGCOMM, 16, 34, 8035-8040, 2014, Peer-reviwed
Scientific journal, English

Crystal structures and magnetic properties of two-dimensional copper(II) complexes bridged with pyrazine-2-carboxamide
Mizuki Yoshida; Takashi Shimada; Takayuki Ishida; Tamizo Kogane
POLYHEDRON, 66, 75-80, Dec. 2013, Peer-reviwed
Scientific journal, English

Magnetic study on radical-gadolinium(III) complexes. Relationship between the exchange coupling and coordination structure
Takayuki Ishida; Rina Murakami; Takuya Kanetomo; Hiroyuki Nojiri
POLYHEDRON, 66, 183-187, Dec. 2013, Peer-reviwed
Scientific journal, English

Exchange Coupling and Its Chemical Trend Studied by High-Frequency EPR on Heterometallic [Ln(2)Ni] Complexes
Atsushi Okazawa; Takashi Shimada; Norimichi Kojima; Shunsuke Yoshi; Hiroyuki Nojiri; Takayuki Ishida
INORGANIC CHEMISTRY, 52, 23, 13351-13355, Dec. 2013, Peer-reviwed
Scientific journal, English

Determination of Crystal-Field Energy Levels and Temperature Dependence of Magnetic Susceptibility for Dy3+ in [Dy2Pd] Heterometallic Complex
Miroslaw Karbowiak; Czeslaw Rudowicz; Takayuki Ishida
INORGANIC CHEMISTRY, 52, 22, 13199-13206, Nov. 2013, Peer-reviwed
Scientific journal, English

Synthesis, Structure, Luminescent, and Magnetic Properties of Carbonato-Bridged Zn(2)(II)Ln(2)(II) Complexes [ (mu(4)-CO3)(2){Zn(II)L(n)Ln(II)(NO3)}(2)) (Ln(III) = Gd-III, Tb-III, Dy-III; L-1 = N,N'-Bis(3-methoxy-2-oxybenzylidene)-1,3-propanediaminato, L-2 = N,N'-Bis(3-ethoxy-2-oxybenzylidene)-1,3-propanediaminato)
Kiyomi Ehama; Yusuke Ohmichi; Soichiro Sakamoto; Takeshi Fujinami; Naohide Matsumoto; Naotaka Mochida; Takayuki Ishida; Yukinari Sunatsuki; Masanobu Tsuchimoto; Nazzareno Re
INORGANIC CHEMISTRY, 52, 21, 12828-12841, Nov. 2013, Peer-reviwed
Scientific journal, English

A supramolecular switch between ground high- and low-spin states using 2,2′:6′,2″-terpyridine-6,6″-diyl bis(tert-butyl nitroxide)
Takuya Konno; Kazuya Koide; Takayuki Ishida
Chemical Communications, RSC, 49, 45, 5156-5158, 07 Jun. 2013, Peer-reviwed
Scientific journal, English

Ground triplet pyrimidine-4,6-diyl bis(tert-butyl nitroxide) as a paramagnetic building block for metal-organic frameworks
Yuta Homma; Atsushi Okazawa; Takayuki Ishida
TETRAHEDRON LETTERS, 54, 24, 3120-3123, Jun. 2013, Peer-reviwed
Scientific journal, English

Carbonato-Bridged NO(2)(II)Ln(2)(III) (Ln(III) = Gd-III, Tb-III, Dy-III) Complexes Generated by Atmospheric CO2 Fixation and Their Single-Molecule-Magnet Behavior: [ (mu(4)-CO3)(2){Ni-II(3-MeOsaltn)(MeOH or H2O)Ln(III)(NO3)}(2)]center dot solvent [3-MeOsaltn = N,N '-Bis(3-methoxy-2-oxybenzylidene)-1,3-propanediaminato]
Soichiro Sakamoto; Takeshi Fujinami; Koshiro Nishi; Naohide Matsumoto; Naotaka Mochida; Takayuki Ishida; Yukinari Sunatsuki; Nazzareno Re
INORGANIC CHEMISTRY, 52, 12, 7218-7229, Jun. 2013, Peer-reviwed
Scientific journal, English

Syntheses, structures, and magnetic properties of acetato- and diphenolato-bridged 3d-4f binuclear complexes [M(3-MeOsaltn)(MeOH) x(ac)Ln(hfac)2](M = ZnII, CuII,NiII,CoII;Ln = LaIII,GdIII, TbIII, DyIII; 3-MeOsaltn = N,N-Bis(3-methoxy-2-oxybenzylidene)-1,3-propanediaminato; Ac = Acetato; Hfac = Hexafluoroacetylacetonato; X = 0 or 1)
Masaaki Towatari; Koshiro Nishi; Takeshi Fujinami; Naohide Matsumoto; Yukinari Sunatsuki; Masaaki Kojima; Naotaka Mochida; Takayuki Ishida; Nazzareno Re; Jerzy Mrozinski
Inorganic Chemistry, ACS, 52, 10, 6160-6178, 20 May 2013, Peer-reviwed
Scientific journal, English

A New Family of Trinuclear Nickel(II) Complexes as Single-Molecule Magnets
Rituparna Biswas; Yumi Ida; Michael L. Baker; Saptarshi Biswas; Paramita Kar; Hiroyuki Nojiri; Takayuki Ishida; Ashutosh Ghosh
CHEMISTRY-A EUROPEAN JOURNAL, 19, 12, 3943-3953, Mar. 2013, Peer-reviwed
Scientific journal, English

Formation of two drastically different MOFs based on Mn(II)-benzoate and pyrazine with a change in seasonal temperature: structural analysis and magnetic study
Paramita Kar; Yumi Ida; Takayuki Ishida; Ashutosh Ghosh
CRYSTENGCOMM, 15, 2, 400-410, 2013, Peer-reviwed
Scientific journal, English

Single-molecule magnet [Tb(hfac)(3)(2pyNO)] (2pyNO=t-butyl 2-pyridyl nitroxide) with a relatively high barrier of magnetization reversal
Rina Murakami; Takayuki Ishida; Shunsuke Yoshii; Hiroyuki Nojiri
DALTON TRANSACTIONS, 42, 38, 13968-13973, 2013, Peer-reviwed
Scientific journal, English

Polyether-bridged bis(tert-butyl nitroxide) paramagnetic hosts showing receptor ability to calcium(II) and barium(II) ions
Sayaka Osada; Naoki Hirosawa; Takayuki Ishida
TETRAHEDRON, 68, 31, 6193-6197, Aug. 2012, Peer-reviwed
Scientific journal, English

Spin Crossover and Light-induced Excited Spin-state Trapping Observed for an Iron(II) Complex Chelated with Tripodal Tetrakis(2-pyridyl)methane
Naoki Hirosawa; Yuya Oso; Takayuki Ishida
CHEMISTRY LETTERS, 41, 7, 716-718, Jul. 2012, Peer-reviwed
Scientific journal, English

Oximato-bridged light-lanthanide Ln(4)Cu complexes showing ferromagnetic Ln-Cu exchange coupling
Kei Fujiwara; Atsushi Okazawa; Norimichi Kojima; Go Tanaka; Shunsuke Yoshii; Hiroyuki Nojiri; Takayuki Ishida
CHEMICAL PHYSICS LETTERS, 530, 49-54, Mar. 2012, Peer-reviwed
Scientific journal, English

Triply Radical-coordinated Gadolinium(III) Complex as a High-spin S=5 Assembly
Naoya Ikegaya; Takuya Kanetomo; Rina Murakami; Takayuki Ishida
CHEMISTRY LETTERS, 41, 1, 82-83, Jan. 2012, Peer-reviwed
Scientific journal, English

Exchange coupling in TbCu and DyCu single-molecule magnets and related lanthanide and vanadium analogs
Takayuki Ishida; Ryo Watanabe; Kei Fujiwara; Atsushi Okazawa; Norimichi Kojima; Go Tanaka; Shunsuke Yoshii; Hiroyuki Nojiri
DALTON TRANSACTIONS, 41, 44, 13609-13619, 2012, Peer-reviwed
Scientific journal, English

A Unique Example of Structural Diversity Tuned by Apparently Innocent o-, m-, and p-Nitro Substituents of Benzoate in Their Complexes of Mn(II) with 4,4 '-Bipyridine: 1D Ladder, 2D Sheet, and 3D Framework
Paramita Kar; Rituparna Biswas; Yumi Ida; Takayuki Ishida; Ashutosh Ghosh
CRYSTAL GROWTH & DESIGN, 11, 12, 5305-5315, Dec. 2011, Peer-reviwed
Scientific journal, English

Ferromagnetic oxovanadium(IV) complexes chelated with tetrahalosalen ligands
Kei Fujiwara; Takayuki Ishida
POLYHEDRON, 30, 18, 3073-3078, Nov. 2011, Peer-reviwed
Scientific journal, English

2,2 '-Bipyridine-6,6 '-diyl bisnitroxide as a paramagnetic host: Encapsulation of a zinc(II) ion
Kazuya Koide; Takayuki Ishida
POLYHEDRON, 30, 18, 3034-3037, Nov. 2011, Peer-reviwed
Scientific journal, English

Single-molecule magnet behavior enhanced by magnetic coupling between 4f and 3d spins
Atsushi Okazawa; Hiroyuki Nojiri; Takayuki Ishida; Norimichi Kojima
POLYHEDRON, 30, 18, 3140-3144, Nov. 2011, Peer-reviwed
Scientific journal, English

Exchange couplings in one-dimensionally arrayed 4f-3d heterometallic [Ln(2)Cu(2)](n) compounds: A chemical trend of the coupling parameter
Atsushi Okazawa; Kei Fujiwara; Ryo Watanabe; Norimichi Kojima; Shunsuke Yoshii; Hiroyuki Nojiri; Takayuki Ishida
POLYHEDRON, 30, 18, 3121-3126, Nov. 2011, Peer-reviwed
Scientific journal, English

Attempted synthesis of axial-equatorial pyrazine-bridged copper(II) complexes toward homometallic ferromagnetic compounds
Ryo Watanabe; Takashi Shimada; Nobumasa Koyama; Takayuki Ishida; Tamizo Kogane
POLYHEDRON, 30, 18, 3165-3170, Nov. 2011, Peer-reviwed
Scientific journal, English

Ferromagnetic Exchange Couplings Showing a Chemical Trend in Cu-Ln-Cu Complexes (Ln = Gd, Tb, Dy, Ho, Er)
Takashi Shimada; Atsushi Okazawa; Norimichi Kojima; Shunsuke Yoshii; Hiroyuki Nojiri; Takayuki Ishida
INORGANIC CHEMISTRY, 50, 21, 10555-10557, Nov. 2011, Peer-reviwed
Scientific journal, English

Spin-Canted Antiferromagnetic Phase Transitions in Alternating Phenoxo- and Carboxylato-Bridged Mn-III-Salen Complexes
Paramita Kar; Pampa M. Guha; Michael G. B. Drew; Takayuki Ishida; Ashutosh Ghosh
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, 2011, 13, 2075-2085, May 2011, Peer-reviwed
Scientific journal, English

Structure and magnetic properties of an unprecedented syn-anti mu-nitrito-1 kappa O:2 kappa O ' bridged Mn(III)-salen complex and its isoelectronic and isostructural formate analogue
Paramita Kar; Rituparna Biswas; Michael G. B. Drew; Yumi Ida; Takayuki Ishida; Ashutosh Ghosh
DALTON TRANSACTIONS, 40, 13, 3295-3304, Apr. 2011, Peer-reviwed
Scientific journal, English

Biradical chelating host 2,2 '-bipyridine-6,6 '-diyl bis(tert-butyl nitroxide) showing tunable exchange magnetic coupling
Kazuya Koide; Takayuki Ishida
INORGANIC CHEMISTRY COMMUNICATIONS, 14, 1, 194-196, Jan. 2011, Peer-reviwed
Scientific journal, English

Chemical trend of Ln-M exchange couplings in heterometallic complexes with Ln = Gd, Tb, Dy, Ho, Er and M = Cu, V
Ryo Watanabe; Kei Fujiwara; Atsushi Okazawa; Go Tanaka; Shunsuke Yoshii; Hiroyuki Nojiri; Takayuki Ishida
CHEMICAL COMMUNICATIONS, 47, 7, 2110-2112, 2011, Peer-reviwed
Scientific journal, English

Ferromagnetic Gd-Cu, Tb-Cu, and Ho-Cu Couplings in Isomorphous [Ln(2)Cu] Complexes
Atsushi Okazawa; Ryo Watanabe; Masaru Nezu; Takashi Shimada; Shunsuke Yoshii; Hiroyuki Nojiri; Takayuki Ishida
CHEMISTRY LETTERS, 39, 12, 1331-1332, Dec. 2010, Peer-reviwed
Scientific journal, English

Spin-Transition-Like Behavior on One Side in a Nitroxide-Copper(II)-Nitroxide Triad System
Atsushi Okazawa; Takayuki Ishida
INORGANIC CHEMISTRY, 49, 21, 10144-10147, Nov. 2010, Peer-reviwed
Scientific journal, English

Ferro- and Antiferromagnetic Coupling Switch Accompanied by Twist Deformation around the Copper(II) and Nitroxide Coordination Bond
Atsushi Okazawa; Daisuke Hashizume; Takayuki Ishida
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 132, 33, 11516-11524, Aug. 2010, Peer-reviwed
Scientific journal, English

Organic Two-Step Spin-Transition-Like Behavior in a Linear S=1 Array: 3 '-Methylbiphenyl-3,5-diyl Bis(tert-butylnitroxide) and Related Compounds
Hirokazu Nishimaki; Takayuki Ishida
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 132, 28, 9598-9599, Jul. 2010, Peer-reviwed
Scientific journal, English

Hard Magnets after Freezing of Spin Dynamics of Soft Magnets in Cobalt(II)-Radical Chain Compounds
Yoshitomo Okamura; Norio Ishii; Takashi Nogami; Takayuki Ishida
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 83, 6, 716-725, Jun. 2010, Peer-reviwed
Scientific journal, English

Amino Acid Spin Labels. An Application of Chelation Ability to a Nickel(II) Ion
Sayaka Osada; Kazuki Igarashi; Takashi Nogami; Takayuki Ishida
CHEMISTRY LETTERS, 39, 6, 576-577, Jun. 2010, Peer-reviwed
Scientific journal, English

Super-superexchange coupling through a hydrogen bond in a linear copper(II) complex, [Cu(LH)(L)]center dot BF4 center dot 2H(2)O (LH = N-tert-butyl-N-2-pyridylhydroxylamine)
Atsushi Okazawa; Takayuki Ishida
CHEMICAL PHYSICS LETTERS, 480, 4-6, 198-202, Oct. 2009, Peer-reviwed
Scientific journal, English

Long-Range Order in the One-Dimensional Cobalt(II)-Radical Coordination Polymer Magnet Probed by Muon-Spin Rotation and Relaxation
Takayuki Ishida; Yoshitomo Okamura; Isao Watanabe
INORGANIC CHEMISTRY, 48, 15, 7012-7014, Aug. 2009, Peer-reviwed
Scientific journal, English

The Hardest Magnet from a Coordination Polymer of Alternating Cobalt(II)-Radical Heterospins
Yoshitomo Okamura; Takashi Nogami; Takayuki Ishida
CHEMISTRY LETTERS, 38, 7, 740-741, Jul. 2009, Peer-reviwed
Scientific journal, English

Ferromagnetic coupling of copper(II) and nickel(II) complexes with a cyclam-based paramagnetic host
Kazuki Igarashi; Takashi Nogami; Takayuki Ishida
POLYHEDRON, 28, 9-10, 1672-1677, Jun. 2009, Peer-reviwed
Scientific journal, English

Strong intramolecular ferromagnetic couplings in nickel(II) and copper(II) complexes chelated with tert-butyl 5-methoxy-2-pyridyl nitroxide
Atsushi Okazawa; Takashi Nogami; Takayuki Ishida
POLYHEDRON, 28, 9-10, 1917-1921, Jun. 2009, Peer-reviwed
Scientific journal, English

Magnetic properties and exchange couplings of one-dimensionally arrayed 4f-3d heterometallic [Ln(2)Cu(2)](n) compounds
Atsushi Okazawa; Ryo Watanabe; Hiroyuki Nojiri; Takashi Nogami; Takayuki Ishida
POLYHEDRON, 28, 9-10, 1808-1813, Jun. 2009, Peer-reviwed
Scientific journal, English

Structures and magnetic properties of imidazolate-bridged tetranuclear and polymeric copper(II) complexes
Nobumasa Koyama; Ryo Watanabe; Takayuki Ishida; Takashi Nogami; Tamizo Kogane
POLYHEDRON, 28, 9-10, 2001-2009, Jun. 2009, Peer-reviwed
Scientific journal, English

Spin-crossover Transition in a Mesophase Iron(II) Thiocyanate Complex Chelated with 4-Hexadecyl-N-(2-pyridylmethylene)aniline
Yuya Oso; Takayuki Ishida
CHEMISTRY LETTERS, 38, 6, 604-605, Jun. 2009, Peer-reviwed
Scientific journal, English

Ferromagnetic Dy-Ni and Antiferromagnetic Dy-Cu Couplings in Single-Molecule Magnets [Dy2Ni] and [Dy2Cu] (vol 47, pg 9763, 2008)
Atsushi Okazawa; Takashi Nogami; Hiroyuki Nojiri; Takayuki Ishida
INORGANIC CHEMISTRY, 48, 7, 3292-3292, Apr. 2009, Peer-reviwed
Scientific journal, English

Ferromagnetic Superexchange Coupling through a Diamagnetic Iron(II) Ion in a Mixed-Valent Iron(III, II, III) meso-Helicate
Toshihide Mochizuki; Takashi Nogami; Takayuki Ishida
INORGANIC CHEMISTRY, 48, 5, 2254-2259, Mar. 2009, Peer-reviwed
Scientific journal, English

Crystal Structures and Magnetic Properties of Two Phases from Imidazolate-bridged Copper(II) 4,6-Nonanedionate Complexes
Ryo Watanabe; Nobumasa Koyama; Takashi Nogami; Takayuki Ishida; Tamizo Kogane
CHEMISTRY LETTERS, 38, 1, 30-31, Jan. 2009, Peer-reviwed
Scientific journal, English

Ferromagnetic Dy-Ni and Antiferromagnetic Dy-Cu Couplings in Single-Molecule Magnets [Dy2Ni] and [Dy2Cu]
Atsushi Okazawa; Takashi Nogami; Hiroyuki Nojiri; Takayuki Ishida
INORGANIC CHEMISTRY, 47, 21, 9763-9765, Nov. 2008, Peer-reviwed
Scientific journal, English

Magneto-structure relationship in copper(II) and nickel(II) complexes chelated with stable tert-butyl 5-phenyl-2-pyridyl nitroxide and related radicals
Atsushi Okazawa; Yasunori Nagaichi; Takashi Nogami; Takayuki Ishida
INORGANIC CHEMISTRY, 47, 19, 8859-8868, Oct. 2008, Peer-reviwed
Scientific journal, English

A pyrazine-bridged linear pentanuclear copper(II) complex and related tri- and dinuclear complexes showing various coordination structures and magnetic couplings
Nobumasa Koyama; Takayuki Ishida; Takashi Nogami; Tamizo Kogane
POLYHEDRON, 27, 11, 2341-2348, Aug. 2008, Peer-reviwed
Scientific journal, English

Spin-crossover transition coupled with another solid-solid phase transition for iron(II) thiocyanate complexes chelated with alkylated N-(di-2-pyridylmethylene)anilines
Yuya Oso; Daisuke Kanatsuki; Shuichi Saito; Takashi Nogami; Takayuki Ishida
CHEMISTRY LETTERS, 37, 7, 760-761, Jul. 2008, Peer-reviwed
Scientific journal, English

Exchange coupling and energy-level crossing in a magnetic chain [Dy2Cu2](n) evaluated by high-frequency electron paramagnetic resonance
Atsushi Okazawa; Takashi Nogami; Hiroyuki Nojiri; Takayuki Ishida
CHEMISTRY OF MATERIALS, 20, 9, 3110-3119, May 2008, Peer-reviwed
Scientific journal, English

Giant coercivity in a one-dimensional cobalt-radical coordination magnet
Norio Ishii; Yoshitomo Okamura; Susumu Chiba; Takashi Nogami; Takayuki Ishida
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 130, 1, 24-+, Jan. 2008, Peer-reviwed
Scientific journal, English

Mono- and dinitroxide radicals from 9,9 '(10H,10 ' H)-spirobiacridine: An approach to a D-2d triplet biradical
Takayuki Ishida; Motohiro Ooishi; Norio Ishii; Hironori Mori; Takashi Nogami
POLYHEDRON, 26, 9-11, 1793-1799, Jun. 2007, Peer-reviwed
Scientific journal, English

Structures and magnetic properties of one-dimensional copper(II) complexes bridged with diazaaromatic rings
Tamizo Kogane; Nobumasa Koyama; Takayuki Ishida; Takashi Nogami
POLYHEDRON, 26, 9-11, 1811-1819, Jun. 2007, Peer-reviwed
Scientific journal, English

Tetranuclear heterometallic cycle Dy2Cu2 and the corresponding polymer showing slow relaxation of magnetization reorientation
Sohei Ueki; Atsushi Okazawa; Takayuki Ishida; Takashi Nogami; Hiroyuki Nojiri
POLYHEDRON, 26, 9-11, 1970-1976, Jun. 2007, Peer-reviwed
Scientific journal, English

Preparation, structures, and magnetic properties of precursors for chelating compounds of 2-pyridyl nitroxide derivatives
Atsushi Okazawa; Takashi Nogami; Takayuki Ishida
POLYHEDRON, 26, 9-11, 1965-1969, Jun. 2007, Peer-reviwed
Scientific journal, English

Quantum tunneling of magnetization via well-defined Dy-Cu exchange coupling in a ferrimagnetic high-spin [Dy4Cu] single-molecule magnet
Sohei Ueki; Takayuki Ishida; Takashi Nogami; Kwang-Yong Choi; Hiroyuki Nojiri
CHEMICAL PHYSICS LETTERS, 440, 4-6, 263-267, Jun. 2007, Peer-reviwed
Scientific journal, English

tert-butyl 2-pyridyl nitroxide available as a paramagnetic chelate ligand for strongly exchange-coupled metal-radical compounds
Atsushi Okazawa; Takashi Nogami; Takayuki Ishida
CHEMISTRY OF MATERIALS, 19, 11, 2733-2735, May 2007, Peer-reviwed
Scientific journal, English

Magnetic exchange coupling tunable by means of selective cation binding into poly(radical-armed) azacrowns
Kazuki Igarashi; Takashi Nogami; Takayuki Ishida
CHEMICAL COMMUNICATIONS, 2007, 5, 501-503, 2007, Peer-reviwed
Scientific journal, English

Strong ferromagnetic exchange couplings in copper(II) and nickel(II) complexes with a paramagnetic tridentate chelate ligand, 2,2 '-bipyridin-6-yl tert-butyl nitroxide
Keita Osanai; Atsushi Okazawa; Takashi Nogami; Takayuki Ishida
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 128, 43, 14008-14009, Nov. 2006, Peer-reviwed
Scientific journal, English

Bistable polymorphs showing diamagnetic and paramagnetic states of an organic crystalline biradical biphenyl-3,5-diyl bis(tert-butylnitroxide)
Hirokazu Nishimaki; Shinichiro Mashiyama; Masanori Yasui; Takashi Nogami; Takayuki Ishida
CHEMISTRY OF MATERIALS, 18, 16, 3602-3604, Aug. 2006, Peer-reviwed
Scientific journal, English

Ferromagnetic exchange coupling in a spiro-fused dinuclear nickel(II) complex with an approximate D-2d symmetry
Atsushi Okazawa; Takashi Nogami; Takayuki Ishida
CHEMICAL PHYSICS LETTERS, 427, 4-6, 333-337, Aug. 2006, Peer-reviwed
Scientific journal, English

Illumination-induced magnetization enhancement of the weak ferromagnet [Fe(N-3)(2)(pm)] (pm = pyrimidine)
Yasuhiko Morishita; Yoshitaka Doi; Takashi Nogami; Takayuki Ishida
CHEMISTRY LETTERS, 35, 7, 770-771, Jul. 2006, Peer-reviwed
Scientific journal, English

Polymorphic alternating HNN-cobalt(II) chains both behaving as single-chain magnets (HNN=4,4,5,5-tetramethylimidazolin-1-oxyl 3-oxide)
N Ishii; T Ishida; T Nogami
INORGANIC CHEMISTRY, 45, 10, 3837-3839, May 2006, Peer-reviwed
Scientific journal, English

Self-assembled meso-helicates of linear trinuclear nickel(II)-radical complexes with triple pyrazolate bridges
S Yamada; M Yasui; T Nogami; T Ishida
DALTON TRANSACTIONS, 2006, 13, 1622-1626, Apr. 2006, Peer-reviwed
Scientific journal, English

Bio-inspired materials for electron donors and charge-transfer complex formation based on the imidazopyrazinone luciferin core
M Suzuki; T Fujii; T Nogami; T Hirano; T Ishida
CHEMISTRY LETTERS, 35, 3, 250-251, Mar. 2006, Peer-reviwed
Scientific journal, English

Oximate-bridged trinuclear Dy-Cu-Dy complex behaving as a single-molecule magnet and its mechanistic investigation
F Mori; T Nyui; T Ishida; T Nogami; KY Choi; H Nojiri
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 128, 5, 1440-1441, Feb. 2006, Peer-reviwed
Scientific journal, English

ET and TTF Salts with Lanthanide Complex Ion Showing Frequency Dependent ac Magnetic Susceptibility
UEKI Sohei; NOGAMI Takashi; ISHIDA Takayuki; TAMURA Masafumi
Mol. Cryst. Liq. Cryst., 455, 129-134, 2006, Peer-reviwed
English

ET and TTF salts with lanthanide complex ions showing frequency-dependent ac magnetic susceptibility
Sohei Ueki; Takashi Nogami; Takayuki Ishida; Masafumi Tamura
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 455, 129-134, 2006, Peer-reviwed
Scientific journal, English

Double half-cubane copper(II) complexes available from copper(II) 1,1,1,5,5,5-hexafluoropentane-2,4-dionate dissolved in formamides
Yasuhiko Morishita; Tamizo Kogane; Takashi Nogami; Takayuki Ishida
DALTON TRANSACTIONS, 2006, 37, 4438-4443, 2006, Peer-reviwed
Scientific journal, English

Magnetic properties of transition metal complexes with 2,2 '-bipyridin-5-yl t-butyl nitroxide
T Shimada; T Ishida; T Nogami
POLYHEDRON, 24, 16-17, 2593-2598, Nov. 2005, Peer-reviwed
Scientific journal, English

Structure and magnetic properties of 3d-4f heterometallic complexes containing di-2-pyridyl ketoximate: An approach to single-molecule magnets
F Mori; T Ishida; T Nogami
POLYHEDRON, 24, 16-17, 2588-2592, Nov. 2005, Peer-reviwed
Scientific journal, English

Structures and magnetic properties of copper(II) complexes containing tetrakis(2-pyridyl)methane
A Okazawa; T Ishida; T Nogami
POLYHEDRON, 24, 16-17, 2584-2587, Nov. 2005, Peer-reviwed
Scientific journal, English

Trans-fused macrobicycle "betweenanene" around a planar Cu-2(mu-CH3O)(2) core showing remarkable antiferromagnetic interaction
T Ishisda; K Yanagi; T Nogami
INORGANIC CHEMISTRY, 44, 21, 7307-7309, Oct. 2005, Peer-reviwed
Scientific journal, English

Organic kagome lattice consisting of trimeric pyrazole and oxime supramolecular synthons from 3-pyrazolecarboxaldoxime
T Nyui; T Nogami; T Ishida
CRYSTENGCOMM, 7, 612-615, Oct. 2005, Peer-reviwed
Scientific journal, English

Nano-sized tetralanthanoid-copper complex ions containing oximato bridges
S Ueki; M Sahlan; T Ishida; T Nogami
SYNTHETIC METALS, 154, 1-3, 217-220, Sep. 2005, Peer-reviwed
Scientific journal, English

Pressure effect on the magnetic phase transition of guest-tunable weak ferromagnets [Fe{N(CN)(2)}(2) (pyrimidine)](guest) (Guest = ethanol and pyrimidine)
K Yuza; T Ishida; T Nogami
CHEMISTRY LETTERS, 34, 7, 974-975, Jul. 2005, Peer-reviwed
Scientific journal, English

Structure and magnetic properties of a honeycomb-like copper(II) complex containing 4-aminopyrimidine and methoxide bridges
K Osanai; T Ishida; T Nogami
CHEMISTRY LETTERS, 34, 4, 620-621, Apr. 2005, Peer-reviwed
Scientific journal, English

The first A(2)B(2)-heterometal ferrimagnetic chain. Structures and magnetic properties of polymeric [Gd2Cu2](n) and the corresponding monomer
S Ueki; Y Kobayashi; T Ishida; T Nogami
CHEMICAL COMMUNICATIONS, 2005, 41, 5223-5225, 2005, Peer-reviwed
Scientific journal, English

Effect of staggered field on the magnetization process of S=1/2 antiferromagnetic chains
A Matsuo; K Hosokawa; Y Narumi; K Okunishi; N Maeshima; T Asano; Y Ajiro; N Ishida; T Nogami; K Kindo
PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT, 159, 159, 158-162, 2005, Peer-reviwed
Scientific journal, English

Synthesis and characterization of dibenzodioxadiselenafulvalene
T Kojima; K Tanaka; T Ishida; T Nogami
JOURNAL OF ORGANIC CHEMISTRY, 69, 26, 9319-9322, Dec. 2004, Peer-reviwed
Scientific journal, English

Dinuclear manganese(II) complex containing tetrakis(2-pyridyl)methane as a spiro-fused bridge
A Okazawa; T Ishida; T Nogami
CHEMISTRY LETTERS, 33, 11, 1478-1479, Nov. 2004, Peer-reviwed
Scientific journal, English

Magnetic coupling switch by means of host-guest chemistry in a polyether side-arm
T Nakabayashi; T Ishida; T Nogami
INORGANIC CHEMISTRY COMMUNICATIONS, 7, 11, 1221-1224, Nov. 2004, Peer-reviwed
Scientific journal, English

Crystal structure of a molecular complex from native beta-cyclodextrin and copper(II) chloride
G Kurokawa; M Sekii; T Ishida; T Nogami
SUPRAMOLECULAR CHEMISTRY, 16, 5, 381-384, Jul. 2004, Peer-reviwed
Scientific journal, English

Remarkably strong intermolecular antiferromagnetic couplings in the crystal of biphenyl-3,5-dlyl bis(tert-butyl nitroxide)
G Kurokawa; T Ishida; T Nogami
CHEMICAL PHYSICS LETTERS, 392, 1-3, 74-79, Jul. 2004, Peer-reviwed
Scientific journal, English

Single-crystal magnetic study on guest-tunable weak ferromagnets [M{N(CN)(2)}(2)(pyrimidine)](guest) (M = Fe, Co)
N Takagami; T Ishida; T Nogami
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 77, 6, 1125-1134, Jun. 2004, Peer-reviwed
Scientific journal, English

High-field magnetization process in the S=1/2 chain [PM center dot Cu(NO3)(2)center dot(H2O)(2)](n) (PM = pyrimidine)
A Matsuo; Y Narumi; T Asano; Y Ajiro; T Ishida; T Nogami; K Kindo
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 272, 1081-1082, May 2004, Peer-reviwed
Scientific journal, English

ESR of quantum spin chains with staggered fields
T. Asano; Y. Ajiro; Y. Inagaki; H. Nojiri; T. Sakon; T. Ishida; T. Nogami; J. P. Boucher; M. Motokawa
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 272, E685-E686, May 2004, Peer-reviwed
Scientific journal, English

Weak ferromagnetism with very large canting in a chiral lattice: Fe(pyrimidine)(2)Cl-2
R Feyerherm; A Loose; T Ishida; T Nogami; J Kreitlow; D Baabe; FJ Litterst; S Sullow; HH Klauss; K Doll
PHYSICAL REVIEW B, 69, 13, 134427/1-8, Apr. 2004, Peer-reviwed
Scientific journal, English

Supramolecular triangular and linear arrays of metal-radical solids using pyrazolato-silver(I) motifs
S Yamada; T Ishida; T Nogami
DALTON TRANSACTIONS, 2004, 6, 898-903, 2004, Peer-reviwed
Scientific journal, English

A self-assembled helix from 4,6-dimethylpyrimidine and copper(II) bromide
T Ishida; LM Yang; T Nogami
CHEMISTRY LETTERS, 32, 11, 1018-1019, Nov. 2003, Peer-reviwed
Scientific journal, English

Molecular metamagnet [Ni(4lmNNH)(2)(NO3)(2)] (4lmNNH=4-lmidazolyl nitronyl nitroxide) and the related compounds showing supramolecular H-bonding interactions
C Aoki; T Ishida; T Nogami
INORGANIC CHEMISTRY, 42, 23, 7616-7625, Nov. 2003, Peer-reviwed
Scientific journal, English

Rectangular tetragadolinium complex ion with a ground S=27/2 state containing bis(dimethylglyoximato)copper(II) as a ferrimagnetic exchange coupler
Y Kobayashi; S Ueki; T Ishida; T Nogami
CHEMICAL PHYSICS LETTERS, 378, 3-4, 337-342, Sep. 2003, Peer-reviwed
Scientific journal, English

Ferro- and ferrimagnetic chains of hin-bridged copper(II) and manganese(II) and hnn-bridged manganese(II) complexes (hin=4,4,5,5-tetramethylimidazolin-1-oxyl; hnn=4,4,5,5-tetramethylimidazolin-1-oxyl 3-oxide)
T Ise; T Ishida; D Hashizume; F Iwasaki; T Nogami
INORGANIC CHEMISTRY, 42, 19, 6106-6113, Sep. 2003, Peer-reviwed
Scientific journal, English

Metamagnetic behavior of [Ni(4ImNNH)(2)(NO3)(2)] having a ground high-spin state (4ImNNH=4-imidazolyl nitronyl nitroxide)
C Aoki; T Ishida; T Nogami
INORGANIC CHEMISTRY COMMUNICATIONS, 6, 8, 1122-1125, Aug. 2003, Peer-reviwed
Scientific journal, English

Host-guest chemistry of radical-copper wheels. A supramolecular control of magnetic exchange coupling
T Ishida; J Omata; T Nogami
POLYHEDRON, 22, 14-17, 2133-2138, Jul. 2003, Peer-reviwed
Scientific journal, English

meta-phenylene-bridged bis(imino nitroxide) biradicals as potential high-spin ligands
T Ichimura; K Doi; C Mitsuhashi; T Ishida; T Nogami
POLYHEDRON, 22, 14-17, 2557-2564, Jul. 2003, Peer-reviwed
Scientific journal, English

Nitronyl nitroxide substituted aniline o-APNN with a three-dimensional hydrogen bond network showing ferromagnetic interaction
K Doi; T Ishida; T Nogami
CHEMISTRY LETTERS, 32, 6, 544-545, Jun. 2003, Peer-reviwed
Scientific journal, English

Effect of staggered field in S = 1/2 antiferromagnetic chain: copper pyrimidine
T Asano; D Nomura; Y Inagaki; Y Ajiro; H Nojiri; Y Narumi; K Kindo; T Ishida; T Nogami
PHYSICA B-CONDENSED MATTER, 329, 1006-1007, May 2003, Peer-reviwed
Scientific journal, English

Hydroiminonitroxide complexes with metal hexafluoroacetylacetonates
T Ise; T Ishida; T Nogami
SYNTHETIC METALS, 137, 1-3, 1281-1282, Apr. 2003, Peer-reviwed
Scientific journal, English

Magnetic properties of 9,9-disubstituted 9,10-dihydroacridine-10-yloxyls
M Seino; Y Akui; T Ishida; T Nogami
SYNTHETIC METALS, 133, 581-583, Mar. 2003, Peer-reviwed
Scientific journal, English

Hybrid magnetic solids of radical-substituted heteroaromatic compounds with metal halides
T Matsuyama; Y Iwata; T Ishida; T Nogami
SYNTHETIC METALS, 133, 611-613, Mar. 2003, Peer-reviwed
Scientific journal, English

Low temperature deuterium NMR studies on magnetism of TEMPO derivatives
G Maruta; S Takeda; M Ooishi; R Imachi; T Ishida; T Nogami
SYNTHETIC METALS, 133, 577-579, Mar. 2003, Peer-reviwed
Scientific journal, English

Metal-azide-pyrimidine complexes M(N-3)(2)(pm) with a three-dimensional network showing weak ferromagnetism for M = Mn and Fe and antiferromagnetism for M = Co and Ni
Y Doi; T Ishida; T Nogami
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 75, 11, 2455-2461, Nov. 2002, Peer-reviwed
Scientific journal, English

Crystal structures and magnetic properties of copper(II) hexafluoroacetylacetonate complexes with hnn and hin and manganese(II) hexafluoroacetylacetonate complex with hin (hnn=4,4,5,5-tetramethylimidazolin-1-oxyl 3-oxide; hin=4,4,5,5-tetramethylimidazolin-1-oxyl)
T Ise; T Ishida; T Nogami
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 75, 11, 2463-2468, Nov. 2002, Peer-reviwed
Scientific journal, English

Convenient synthesis and host-guest compounds of 9,9 '(10H,10 ' H)-spirobiacridines
M Ooishi; M Seino; R Imachi; T Ishida; T Nogami
TETRAHEDRON LETTERS, 43, 32, 5521-5524, Aug. 2002, Peer-reviwed
Scientific journal, English

Low-temperature heat capacity and one-dimensional ferromagnetic behavior of the organic free radical 4-benzylideneamino-2,2,6,6-tetramethylpiperidin-1-oxyl (BATMP)
T Sakakibara; Y Miyazaki; T Ishida; T Nogami; M Sorai
JOURNAL OF PHYSICAL CHEMISTRY B, 106, 25, 6390-6394, Jun. 2002, Peer-reviwed
Scientific journal, English

Novel organic-inorganic molecular assembly: a copper(I) and copper(II) mixed-valent cluster with bromide bridges and paramagnetic ligands
T Katayama; T Ishida; T Nogami
INORGANICA CHIMICA ACTA, 329, 31-35, Feb. 2002, Peer-reviwed
Scientific journal, English

Radical-copper macrocycles and related compounds
J Omata; T Ishida; D Hashizume; F Iwasaki; T Nogami
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 376, 455-462, 2002, Peer-reviwed
Scientific journal, English

Magnetic phase transition of FEII, COII and NIII complexes bridged by pyrimidine and dicyanamide
T Kusaka; T Ishida; D Hashizume; F Iwasaki; T Nogami
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 376, 463-468, 2002, Peer-reviwed
Scientific journal, English

Solvated magnets of Fe[N(CN)(2)](2)(pyrimidine): Transition phenomena tuned by guests
T Kusaka; T Ishida; T Nogami
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 379, 259-264, 2002, Peer-reviwed
Scientific journal, English

First isolation and characterization of an HIN complex, CdCl2(HIN)(4) (HIN=4,4,5,5-tetramethylimidazolin-1-oxyl)
T Ise; T Ishida; T Nogami
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 379, 147-152, 2002, Peer-reviwed
Scientific journal, English

Antiferromagnetic coupling of transition metal spins across pyrimidine and pyrazine bridges in dinuclear manganese(II), cobalt(II), nickel(II) and copper(II) 1,1,1,5,5,5-hexauoropentane-2,4-dionate complexes
T Ishida; T Kawakami; S Mitsubori; T Nogami; K Yamaguchi; H Iwamura
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 2002, 16, 3177-3186, 2002, Peer-reviwed
Scientific journal, English

Ferromagnetic exchange coupling of vanadium(IV) d pi spins across pyrimidine rings: Dinuclear complexes of oxovanadium(IV) bis(1,1,1,5,5,5-hexafluoropentane-2,4-dionate) bridged by pyrimidine derivatives
T Ishida; S Mitsubori; T Nogami; N Takeda; M Ishikawa; H Iwamura
INORGANIC CHEMISTRY, 40, 27, 7059-7064, Dec. 2001, Peer-reviwed
Scientific journal, English

Bis(hfac)-copper(II) complexes bridged by pyrimidines showing magnetic interactions
M Yasui; Y Ishikawa; T Ishida; T Nogami; F Iwasaki
ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 57, 772-779, Dec. 2001, Peer-reviwed
Scientific journal, English

Radical-copper wheels: Structure and magnetism of hexanuclear hybrid arrays
J Omata; T Ishida; D Hashizume; F Iwasaki; T Nogami
INORGANIC CHEMISTRY, 40, 16, 3954-3958, Jul. 2001, Peer-reviwed
Scientific journal, English

Dipyrimidine-copper(II) dinitrate complexes showing magnetic interactions
M Yasui; Y Ishikawa; N Akiyama; T Ishida; T Nogami; F Iwasaki
ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 57, 288-295, Jun. 2001, Peer-reviwed
Scientific journal, English

Radical-copper hexanuclear arrays showing intermolecular ferromagnetic interactions
J Omata; T Ishida; D Hashizume; F Iwasaki; T Nogami
POLYHEDRON, 20, 11-14, 1557-1561, May 2001, Peer-reviwed
Scientific journal, English

Ferromagnetic S=1 chain formed by a square Ni2S2 motif in Ni(qt)(2) (qt = quinoline-8-thiolate). Magnetic properties of related compounds
T Miyake; T Ishida; D Hashizume; F Iwasaki; T Nogami
POLYHEDRON, 20, 11-14, 1551-1555, May 2001, Peer-reviwed
Scientific journal, English

Zero-field muon spin rotation study on TEMPO-based magnets, Ar-CH = N-TEMPO
T Ishida; S Ohira; Watanabe, I; T Nogami; K Nagamine
POLYHEDRON, 20, 11-14, 1545-1549, May 2001, Peer-reviwed
Scientific journal, English

Anomalous magnetism in organic radical ferromagnets 4-arylmethyleneamino-2,2,6,6-tetramethylpiperidin-1-yloxyl just above T-C studied by the mu SR method
S Ohira; K Nakayama; T Ise; T Ishida; T Nogami; Watanabe, I; K Nagamine
POLYHEDRON, 20, 11-14, 1223-1227, May 2001, Peer-reviwed
Scientific journal, English

Synthesis and properties of new oxygen-containing fulvalene derivatives: dibenzo- and dinaphthotetraoxafulvalenes and dibenzodioxadithiafulvalene
T Nogami; K Tanaka; T Ishida; A Kobayashi
SYNTHETIC METALS, 120, 1-3, 755-756, Mar. 2001, Peer-reviwed
Scientific journal, English

Single-component organic semiconductors based on novel radicals that exhibit electrochemical amphotericity: Preparation, crystal structures, and solid-state properties of N,N '-dicyanopyrazinonaphthoquinodiiminides substituted with an N-alkylpyridinium unit
T Suzuki; S Miyanari; Y Tsubata; T Fukushima; T Miyashi; Y Yamashita; K Imaeda; T Ishida; T Nogami
JOURNAL OF ORGANIC CHEMISTRY, 66, 1, 216-224, Jan. 2001, Peer-reviwed
Scientific journal, English

Pressure effects of genuine organic crystalline ferromagnet possessing intermolecular contacts between nitroxide oxygen and methyl hydrogen atoms
M Mito; T Kawae; M Hitaka; K Takeda; T Ishida; T Nogami
CHEMICAL PHYSICS LETTERS, 333, 1-2, 69-75, Jan. 2001, Peer-reviwed
Scientific journal, English

Zero-field muon spin rotation study on genuine organic ferromagnets, 4-arylmethyleneamino-2,2,6,6-tetramethylpiperidin-1-yloxyls (aryl=4-biphenylyl and phenyl)
T Ishida; S Ohira; T Ise; K Nakayama; Watanabe, I; T Nogami; K Nagamine
CHEMICAL PHYSICS LETTERS, 330, 1-2, 110-117, Nov. 2000, Peer-reviwed
Scientific journal, English

Low-temperature magnets M[N(CN)(2)](2)(pyrimidine) (M = Fe and Co) with a 3-D network
T Kusaka; T Ishida; D Hashizume; F Iwasaki; T Nogami
CHEMISTRY LETTERS, 10, 1146-1147, Oct. 2000, Peer-reviwed
Scientific journal, English

Magnetic-field induced gap and staggered susceptibility in the S=1/2 chain [PM center dot Cu(NO3)(2)center dot(H2O)(2)](n) (PM = pyrimidine)
R Feyerherm; S Abens; D Gunther; T Ishida; M Meissner; M Meschke; T Nogami; M Steiner
JOURNAL OF PHYSICS-CONDENSED MATTER, 12, 39, 8495-8509, Oct. 2000, Peer-reviwed
Scientific journal, English

One-dimensional S = 1 ferromagnetic chain formed by a square Ni2S2 motif in Ni(qt)(2) (qt = quinoline-8-thiolate)
T Miyake; T Ishida; D Hashizume; F Iwasaki; T Nogami
CHEMISTRY LETTERS, 8, 952-953, Aug. 2000, Peer-reviwed
Scientific journal, English

mu SR studies on the organic radical magnet, 4-arylmethyleneamino-TEMPO
S Ohira; T Ishida; T Nogami; Watanabe, I; FL Pratt; K Nagamine
PHYSICA B, 289, 123-127, Aug. 2000, Peer-reviwed
Scientific journal, English

The experimental deformation electron-density distributions of 4-arylmethyleneamino-2,2,6,-tetramethyl-1-piperidyloxyl (TEMPO) radicals: Relations between electron densities and intermolecular interactions
M Yasui; E Kan-nari; T Ishida; T Nogami; F Iwasaki
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 73, 6, 1333-1340, Jun. 2000, Peer-reviwed
Scientific journal, English

First TOF donors: Synthesis and characterization of dibenzo- and dinaphthotetraoxafulvalenes
K Tanaka; K Yoshida; T Ishida; A Kobayashi; T Nogami
ADVANCED MATERIALS, 12, 9, 661-+, May 2000, Peer-reviwed
Scientific journal, English

Low-temperature heat capacities and ferromagnetic phase transition of the organic free radical ferromagnet, 4-(4-chlorobenzylideneamino)-2,2,6,6-tetramethylpiperidin-1-oxyl (CATMP)
Y Miyazaki; T Matsumoto; T Ishida; T Nogami; M Sorai
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 73, 1, 67-71, Jan. 2000, Peer-reviwed
Scientific journal, English

Spin density of a ferromagnetic TEMPO derivative: polarized neutron investigation and ab initio calculation
Y Pontillon; A Grand; T Ishida; E Lelievre-Berna; T Nogami; E Ressouche; J Schweizer
JOURNAL OF MATERIALS CHEMISTRY, 10, 7, 1539-1546, 2000, Peer-reviwed
Scientific journal, English

Magnetic phase transition of Py2N-- and NCNH--bridged nickel(II) complexes at about 25 K
K Zusai; T Katayama; T Ishida; T Nogami
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 343, 439-444, 2000, Peer-reviwed
Scientific journal, English

Magnetism of pyrimidine-bridged metal(II) halide complexes
K Zusai; T Kusaka; T Ishida; R Feyerherm; M Steiner; T Nogami
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 343, 445-450, 2000, Peer-reviwed
Scientific journal, English

TEMPO radicals showing magnetic interactions. II. 4-(benzylideneamino)-TEMPO and related compounds
F Iwasaki; JH Yoshikawa; H Yamamoto; K Takada; E Kan-nari; M Yasui; T Ishida; T Nogami
ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 55, 1057-1067, Dec. 1999, Peer-reviwed
Scientific journal, English

Dichlorobis(pyrimidine-N)cobalt(II) and its bromo derivative
D Hashizume; R Takayama; K Nakayama; T Ishida; T Nogami; M Yasui; F Iwasaki
ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS, 55, 1793-1797, Nov. 1999, Peer-reviwed
Scientific journal, English

TEMPO radicals showing magnetic interactions. I. 4-(4-halobenzylideneamino)TEMPO and related compounds
F Iwasaki; JH Yoshikawa; H Yamamoto; E Kan-Nari; K Takada; M Yasui; T Ishida; T Nogami
ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 55, 231-245, Apr. 1999
Scientific journal, English

Intermolecular ferromagnetic interaction in the crystal of a diphenyl nitroxide derivative. The role of spin-polarized hydrogen atoms located near a neighboring N-O site
M Nakagawa; T Ishida; M Suzuki; D Hashizume; M Yasui; F Iwasaki; T Nogami
CHEMICAL PHYSICS LETTERS, 302, 1-2, 125-131, Mar. 1999, Peer-reviwed
Scientific journal, English

Single Crystal Magnetic Susceptibility of 1-D [PM.Cu(NO3)2.(H2O)2]n
R. Feyerherm; T. Ishida; T. Nogami; M. Steiner
Molecular Crystals and Liquid Crystals, 335, 235-244, 1999, Peer-reviwed
International conference proceedings, English

Solid-state high-resolution H-1 and D-2 NMR study of the electron spin density distribution of the hydrogen-bonded organic ferromagnetic compound 4-hydroxyimino-TEMPO
G Maruta; S Takeda; R Imachi; T Ishida; T Nogami; K Yamaguchi
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 121, 2, 424-431, Jan. 1999, Peer-reviwed
Scientific journal, English

Molecular Orbital Study on the Magnetic Properties of Pyrazine- and Pyrimidine-Bridged Copper(II) Complexes
F. Mohri; K. Yoshizawa; T. Yamabe; T. Ishida; T. Nogami
Molecular Engineering, 8, 357-373, 1999, Peer-reviwed
Scientific journal, English

Possible superhigh-spin cluster in the crystals of a novel nitronyl nitroxide radical as studied by FT pulsed ESR
D Shiomi; K Sato; T Takui; K Itoh; M Tamura; Y Nishio; K Kajita; M Nakagawa; T Ishida; T Nogami
MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 335, 1071-1081, 1999, Peer-reviwed
Scientific journal, English

Spin density of a ferromagnetic tempo derivative
Y Pontillon; T Ishida; E Lelievre-Berna; T Nogami; E Ressouche; J Schweizer
MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 334, 359-367, 1999, Peer-reviwed
Scientific journal, English

Pressure effect of organic ferromagnetic radical crystal p-Cl-C6H4CH=N-TEMPO
M Mito; T Kawae; K Takeda; T Ishida; T Nogami
MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 334, 323-332, 1999, Peer-reviwed
Scientific journal, English

Single crystal magnetic susceptibility of 1-D [PM center dot Cu(NO3)(2)center dot(H2O)(2)](n)
R Feyerherm; T Ishida; T Nogami; M Steiner
MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 335, 947-956, 1999, Peer-reviwed
Scientific journal, English

Magnetic phase transition of copper complexes containing dmit or TCNQ anion
T Ishida; Y Kokubo; K Nakayama; T Nogami
MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 335, 1035-1044, 1999, Peer-reviwed
Scientific journal, English

Intermolecular ferromagnetic interaction in pi-conjugated nitroxide radical crystals
T Ishida; M Nakagawa; R Imachi; Y Akui; S Masaoka; M Suzuki; D Hashizume; M Yasui; F Iwasaki; T Nogami
MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 334, 89-98, 1999, Peer-reviwed
Scientific journal, English

Ferromagnetic and antiferromagnetic phases of 4-(4-iodobenzylideneamino)-2,2,6,6-tetramethylpiperidin-1-yloxyl
T Ishida; K Togashi; R Imachi; H Yamamoto; M Yasui; F Iwasaki; T Nogami
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 71, 11, 2583-2587, Nov. 1998, Peer-reviwed
Scientific journal, English

Electrical conductivities and crystal and band-electronic structures of a new phase of BEDT-TTF-bromide salt, (BEDT-TTF)(2)Br(H2O)(3)
MY Luo; T Ishida; A Kobayashi; T Nogami
SYNTHETIC METALS, 96, 2, 97-102, Jul. 1998, Peer-reviwed
Scientific journal, English

Pyrimidine-bridged cobalt(II) complexes with a chiral 3-D network showing weak ferromagnetism
K Nakayama; T Ishida; R Takayama; D Hashizume; M Yasui; F Iwasaki; T Nogami
CHEMISTRY LETTERS, 6, 497-498, Jun. 1998, Peer-reviwed
Scientific journal, English

Crystal Structures of 4-(4-Halobenzylideneamino)-TEMPO Radicals Showing Magnetic Interactions
Fujiko Iwasaki; Hazime Yamamoto; Joseph H. Yoshikawa; Kiwamu Takada; Eiji Kannari; Masanori Yasui; Takayuki Ishida; Takashi Nogami
MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 313, 223-228, 1998, Peer-reviwed
Scientific journal, English

Ferromagnetism of organic radical crystals of deuterated TEMPO derivatives
R Imachi; T Ishida; T Nogami; M Yasui; F Iwasaki; N Takeda; M Ishikawa
SYNTHETIC METALS, 85, 1-3, 1743-1744, Feb. 1997, Peer-reviwed
Scientific journal, English

Magnetic properties of pyrimidine-bridged copper(II) complexes
T Ishida; K Nakayama; M Nakagawa; W Sato; Y Ishikawa; M Yasui; F Iwasaki; T Nogami
SYNTHETIC METALS, 85, 1-3, 1655-1658, Feb. 1997, Peer-reviwed
Scientific journal, English

Electrical conductivities of MOTT salts
K Yoshida; T Ishida; T Nogami; A Kobayashi
SYNTHETIC METALS, 86, 1-3, 2135-2136, Feb. 1997, Peer-reviwed
Scientific journal, English

Phenanthridine N-oxylおよびAcridine N-oxyl誘導体の結晶構造
鈴木 幹浩; 橋爪 大輔; 安井 正憲; 石田 尚行; 野上 隆; 岩崎 不二子
日本結晶学会誌, The Crystallographic Society of Japan, 39, 41-41, 1997
Japanese

TEMPO-based organic ferromagnets and metamagnets (TEMPO=2,2,6,6-tetramethylpiperidin-1-yloxyl)
T Nogami; T Ishida
MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 296, 305-322, 1997, Peer-reviwed
Scientific journal, English

mu SR of the organic radical ferromagnet, 4-(p-chlorobenzylideneamino)-2,2,6,6-tetramethylpiperidin-1-yloxyl
R Imachi; T Ishida; T Nogami; S Ohira; K Nishiyama; K Nagamine
CHEMISTRY LETTERS, 3, 233-234, 1997, Peer-reviwed
Scientific journal, English

Ferromagnetic dimer of pi-conjugated organic free radicals 9,9-bis(p-tolyl)-9,10-dihydroacridin-10-yloxyl
R Imachi; T Ishida; M Suzuki; M Yasui; F Iwasaki; T Nogami
CHEMISTRY LETTERS, 8, 743-744, 1997, Peer-reviwed
Scientific journal, English

Ferromagnetic interaction in a pyrimidine-bridged copper(II) nitrate complex
K Nakayama; M Nakagawa; T Ishida; Y Ishikawa; M Yasui; F Iwasaki; T Nogami
MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 306, 379-384, 1997, Peer-reviwed
Scientific journal, English

Magnetic interaction via β-hydrogen atoms in tempo derivatives
Takashi Kawakami; Akifumi Oda; Sadamu Takeda; Wasuke Mori; Takayuki Ishida; Masanori Yasui; Fujiko Iwasaki; Takashi Nogami; Kizashi Yamaguchi
Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals, 306, 141-150, 1997, Peer-reviwed
Scientific journal, English

Solid state H-1-MAS-NMR and spin densities on protons of the organic ferromagnetic TEMPO derivatives
G Maruta; S Takeda; T Kawakami; W Mori; R Imachi; T Ishida; T Nogami; K Yamaguchi
MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 306, 307-314, 1997, Peer-reviwed
Scientific journal, English

Organic radicals exhibiting intermolecular ferromagnetic interactions with high probability: 4-arylmethyleneamino-2,2,6,6-tetramethylpiperidin-1-yloxyls and related compounds
K Togashi; R Imachi; K Tomioka; H Tsuboi; T Ishida; T Nogami; N Takeda; M Ishikawa
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 69, 10, 2821-2830, Oct. 1996, Peer-reviwed
Scientific journal, English

Proposed mechanism of ferromagnetic interaction of organic ferromagnets: 4-(Arylmethyleneamino)-2,2,6,6-tetramethylpiperidin-1-oxyls and related compounds
T Nogami; T Ishida; M Yasui; F Iwasaki; N Takeda; M Ishikawa; T Kawakami; K Yamaguchi
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 69, 7, 1841-1848, Jul. 1996, Peer-reviwed
Scientific journal, English

Unusual reactions of C-60 with aldehydes in the presence of aqueous ammonia
A Komori; M Kubota; T Ishida; H Niwa; T Nogami
TETRAHEDRON LETTERS, 37, 23, 4031-4034, Jun. 1996, Peer-reviwed
Scientific journal, English

Synthesis and characterization of C-60 derivatives possessing TEMPO radicals
T Ishida; K Shinozuka; T Nogami; M Kubota; M Ohashi
TETRAHEDRON, 52, 14, 5103-5112, Apr. 1996, Peer-reviwed
Scientific journal, English

Synthesis, structure, and some reactions of (2,4,6-tri-t-butyl)thiobenzaldehyde, the first stable aromatic thioaldehyde
A Ishii; T Ishida; N Kumon; N Fukuda; H Oyama; N Inamoto; F Iwasaki; R Okazaki
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 69, 3, 709-717, Mar. 1996, Peer-reviwed
Scientific journal, English

Crystal Structures of TEMPO Radicals Showing Ferromagnetic Interaction
M. Yasui; H. Yoshikawa; H. Yamamoto; T. Ishida; T. Nogami; F. Iwasaki
Molecular Crystals and Liquid Crystals, 279, 77-85, 1996, Peer-reviwed
International conference proceedings, English

Magnetic properties of 4- and 5-methylpyrimidine-bridged copper(II) complexes
M Nakagawa; Y Ishikawa; T Kogane; T Ishida; M Yasui; F Iwasaki; T Nogami
MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 285, 351-356, 1996, Peer-reviwed
Scientific journal, English

CRYSTAL STRUCTURES OF COPPER COMPLEXES SHOWING FERROMAGNETIC INTERACTION.
M. Yasui; Y. Ishikawa; T. Nogami; T. Ishida; F. Iwasaki
ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES, 52, C451-C451, 1996, Peer-reviwed
English

Synthesis and characterization of dialkyl-C61(+)
M Kawasumi; T Ishida; T Nogami
FULLERENE SCIENCE AND TECHNOLOGY, 4, 3, 357-367, 1996, Peer-reviwed
Scientific journal, English

Ferromagnetism of pyrimidine-bridged copper(II) complexes
T Ishida; T Nogami; M Yasui; F Iwasaki; H Iwamura; N Takeda; M Ishikawa
MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 278, A87-A96, 1996, Peer-reviwed
Scientific journal, English

CRYSTAL STRUCTURES OF TEMPO RADICALS SHOWING FERROMAGNETIC INTERACTIONS.
H. Yamamoto; H. Yoshikawa; M. Yasui; T. Ishida; T. Nogami; F. Iwasaki
ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES, 52, C451-C451, 1996, Peer-reviwed
International conference proceedings, English

Magnetic Properties of 4- and 5-Methylpyrimidine-Bridged Copper(II) Complexes
M. Nakagawa; Y. Ishikawa; T. Kogane; T. Ishida; M. Yasui; F. Iwasaki; T. Nogami
Molecular Crystals and Liquid Crystals, 286, 29-34, 1996, Peer-reviwed
International conference proceedings, English

Ferromagnetism of organic radical crystals of TEMPO derivatives
T Nogami; T Ishida; M Yasui; F Iwasaki; H Iwamura; N Takeda; M Ishikawa
MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 278, A97-A106, 1996, Peer-reviwed
Scientific journal, English

AN ORGANIC METAMAGNET - 4-(2-NAPHTYLMETHYLENEAMINO)-2,2,6,6-TETRAMETHYLPIPERIDIN-1-OXYL
T ISHIDA; K TOMIOKA; T NOGAMI; H YOSHIKAWA; M YASUI; F IWASAKI; N TAKEDA; M ISHIKAWA
CHEMICAL PHYSICS LETTERS, 247, 1-2, 7-12, Dec. 1995, Peer-reviwed
Scientific journal, English

FULLERENE SPIN-LABEL - SYNTHESIS AND CHARACTERIZATION OF THE [60]FULLERENE-SUBSTITUTED TEMPO RADICAL
T ISHIDA; K SHINOZUKA; M KUBOTA; M OHASHI; T NOGAMI
JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 18, 1841-1842, Sep. 1995, Peer-reviwed
Scientific journal, English

FERROMAGNETISM IN ORGANIC RADICAL CRYSTAL OF 4-(P-CHLOROBENZYLIDENEAMINO)-2,2,6,6-TETRAMETHYLPIPERIDIN-1-OXYL
T NOGAMI; T ISHIDA; H TSUBOI; H YOSHIKAWA; H YAMAMOTO; M YASUI; F IWASAKI; H IWAMURA; N TAKEDA; M ISHIKAWA
CHEMISTRY LETTERS, 8, 635-636, Aug. 1995, Peer-reviwed
Scientific journal, English

FIRST X-RAY STRUCTURAL DETERMINATION OF FULLERENE [2+2] CYCLOADDUCT
T ISHIDA; K SHINOZUKA; T NOGAMI; S SASAKI; M IYODA
CHEMISTRY LETTERS, 4, 317-318, Apr. 1995, Peer-reviwed
Scientific journal, English

NEW ORGANIC FERROMAGNETS - 4-ARYLMETHYLENEAMINO-2,2,6,6-TETRAMETHYLPIPERIDIN-1-OXYL (ARYL=PHENYL, 4-BIPHENYLYL, 4-CHLOROPHENYL, AND 4-PHENOXYPHENYL)
T NOGAMI; K TOGASHI; H TSUBOI; T ISHIDA; H YOSHIKAWA; M YASUI; F IWASAKI; H IWAMURA; N TAKEDA; M ISHIKAWA
SYNTHETIC METALS, 71, 1-3, 1813-1814, Apr. 1995, Peer-reviwed
Scientific journal, English

INTRAMOLECULAR AND INTERMOLECULAR FERROMAGNETIC INTERACTION OF TRANSITION-METAL COMPLEXES CONTAINING PYRIMIDINE OR PYRAZINE DERIVATIVES
T ISHIDA; S MITSUBORI; T NOGAMI; Y ISHIKAWA; M YASUI; F IWASAKI; H IWAMURA; N TAKEDA; M ISHIKAWA
SYNTHETIC METALS, 71, 1-3, 1791-1792, Apr. 1995, Peer-reviwed
Scientific journal, English

SYNTHESIS AND SPECTRAL CHARACTERIZATION OF DIFUNCTIONAL FULLERENES
T ISHIDA; K TANAKA; T FURUDATE; T NOGAMI; M KUBOTA; S KURONO; M OHASHI
FULLERENE SCIENCE AND TECHNOLOGY, 3, 1, 85-92, 1995, Peer-reviwed
Scientific journal, English

SYNTHESIS AND MASS-SPECTRAL ANALYSIS OF C-60-DIHALOCARBENE ADDUCTS
T ISHIDA; T FURUDATE; T NOGAMI; M KUBOTA; T HIRANO; M OHASHI
FULLERENE SCIENCE AND TECHNOLOGY, 3, 4, 399-409, 1995, Peer-reviwed
Scientific journal, English

SYNTHESES AND STRUCTURES OF NOVEL FUSED-RING SYSTEMS CONTAINING 6 OR 7 SULFUR-ATOMS - 2,3/5,6-BIS(ETHYLENEDITHIO)THIENO[3,2-B]THIOPHENE AND 3,4/6,7-BIS(ETHYLENEDITHIO)THIENO[3,2-C][1,2]DITHIIN
M TANAKA; T ISHIDA; T NOGAMI; H YOSHIKAWA; M YASUI; F IWASAKI
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 68, 4, 1193-1199, 1995, Peer-reviwed
Scientific journal, English

SYNTHESIS AND STRUCTURE OF NITRENE-C-60 ADDUCT, C(60)NPHTH (PHTH=PHTHALIMIDO)
SY KUWASHIMA; M KUBOTA; K KUSHIDA; T ISHIDA; M OHASHI; T NOGAMI
TETRAHEDRON LETTERS, 35, 25, 4371-4374, Jun. 1994, Peer-reviwed
Scientific journal, English

AN ORGANIC FERROMAGNET WITH A T-C OF 0.4 K - 4-(P-PHENYLBENZYLIDENEAMINO)-2,2,6,6-TETRAMETHYLPIPERIDIN-1-OXYL
T ISHIDA; H TSUBOI; T NOGAMI; H YOSHIKAWA; M YASUI; F IWASAKI; H IWAMURA; N TAKEDA; M ISHIKAWA
CHEMISTRY LETTERS, 5, 919-922, May 1994, Peer-reviwed
Scientific journal, English

ORGANIC 2ND-ORDER NONLINEAR-OPTICAL MATERIALS WITH TRANSPARENCY IN THE BLUE WAVELENGTH REGION - ETHYLENE DERIVATIVES POSSESSING ELECTRON-DONOR AND ACCEPTOR GROUPS
H OSAKA; T ISHIDA; T NOGAMI; R YAMAZAKI; M YASUI; F IWASAKI; A MIZOGUCHI; M KUBATA; T UEMIYA; A NISHIMURA
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 67, 4, 918-923, Apr. 1994, Peer-reviwed
Scientific journal, English

MOLECULAR FERROMAGNET, PM[VO(HFAC)(2)](2)(PM=PYRIMIDINE, HFAC=1,1,1,5,5,5-HEXAFLUOROPENTA-2,4-DIONATE) - FERROMAGNETIC ASSEMBLY OF GROUND HIGH-SPIN MOLECULES
S MITSUBORI; T ISHIDA; T NOGAMI; H IWAMURA; N TAKEDA; M ISHIKAWA
CHEMISTRY LETTERS, 4, 685-686, Apr. 1994, Peer-reviwed
Scientific journal, English

FULLERENE AZIRIDINE - FACILE SYNTHESIS AND SPECTRAL CHARACTERIZATION OF FULLERENE URETHANE, C60NCO2CH2CH3
T ISHIDA; K TANAKA; T NOGAMI
CHEMISTRY LETTERS, 3, 561-562, Mar. 1994, Peer-reviwed
Scientific journal, English

PYRIMIDINES AS FERROMAGNETIC EXCHANGE COUPLERS IN DINUCLEAR OXOVANADIUM(IV) COMPLEXES
S MITSUBORI; T ISHIDA; T NOGAMI; H IWAMURA
CHEMISTRY LETTERS, 2, 285-288, Feb. 1994, Peer-reviwed
Scientific journal, English

A NEW ORGANIC FERROMAGNET - 4-BENZYLIDENEAMINO-2,2,6,6-TETRAMETHYLPIPERIDIN-1-OXYL
T NOGAMI; K TOMIOKA; T ISHIDA; H YOSHIKAWA; M YASUI; F IWASAKI; H IWAMURA; N TAKEDA; M ISHIKAWA
CHEMISTRY LETTERS, 1, 29-32, Jan. 1994, Peer-reviwed
Scientific journal, English

SPECTRAL CHARACTERIZATION OF ANTHRACENE-C60, CYCLOPENTADIENE-C60, AND DICHLOROCARBENE-C60 ADDUCTS
T ISHIDA; M TSUDA; T NOGAMI; S KURONO; M OHASHI
FULLERENE SCIENCE AND TECHNOLOGY, 2, 2, 155-164, 1994, Peer-reviwed
Scientific journal, English

SYNTHESIS AND CHARACTERIZATION OF C60 ADDUCTS WITH BENZYNE, DICHLOROCARBENE, DIENES, AND OXYGEN
T NOGAMI; M TSUDA; T ISHIDA; S KURONO; M OHASHI
ADVANCED MATERIALS '93, I - A & B, 14, A & B, 1181-1184, 1994, Peer-reviwed
International conference proceedings, English

C61CL2 - SYNTHESIS AND CHARACTERIZATION OF DICHLOROCARBENE ADDUCTS OF C-60
M TSUDA; T ISHIDA; T NOGAMI; S KURONO; M OHASHI
TETRAHEDRON LETTERS, 34, 43, 6911-6912, Oct. 1993, Peer-reviwed
Scientific journal, English

ISOLATION AND CHARACTERIZATION OF DIELS-ALDER ADDUCTS OF C-60 WITH ANTHRACENE AND CYCLOPENTADIENE
M TSUDA; T ISHIDA; T NOGAMI; S KURONO; M OHASHI
JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 16, 1296-1298, Aug. 1993, Peer-reviwed
Scientific journal, English

INTERMOLECULAR FERROMAGNETIC INTERACTION OF 4-BENZYLIDENEAMINO-2,2,6,6-TETRAMETHYLPIPERIDIN-1-OXYL
K TOMIOKA; S MITSUBORI; T ISHIDA; T NOGAMI; H IWAMURA
CHEMISTRY LETTERS, 7, 1239-1242, Jul. 1993, Peer-reviwed
Scientific journal, English

INTERMOLECULAR FERROMAGNETIC INTERACTION OF 4-(2-NAPHTHYLMETHYLENEAMINO)-2,2,6,6-TETRAMETHYLPIPERIDIN-1-OXYL
K TOMIOKA; T ISHIDA; T NOGAMI; H IWAMURA
CHEMISTRY LETTERS, 4, 625-626, Apr. 1993, Peer-reviwed
Scientific journal, English

SYNTHESES, 2ND-ORDER NLO PROPERTIES, AND CRYSTAL-STRUCTURES OF TETRA-SUBSTITUTED ETHYLENE, TRI-SUBSTITUTED SCHIFF-BASE, AND DIPHENOXYMETHANE DERIVATIVES
T ISHIDA; H OSAKA; T NOGAMI; R YAMAZAKI; M YASUI; F IWASAKI; A MIZOGUCHI; M KUHATA; T UEMIYA; A NISHIMURA
SYNTHETIC METALS, 56, 1, 2013-2018, Mar. 1993, Peer-reviwed
Scientific journal, English

ATTEMPTED SYNTHESES OF DIBENZOTETRAOXAFULVALENE
T ISHIDA; Y ISHIHARA; T YAMAGA; T NOGAMI
SYNTHETIC METALS, 56, 1, 1968-1971, Mar. 1993, Peer-reviwed
Scientific journal, English

SYNTHESIS OF MULTI-SULFUR TTF DERIVATIVES AND CONDUCTING ORGANIC SALTS
T NOGAMI; T ISHIDA; H YOSHIKAWA; M TANAKA; T NAITO; H KOBAYASHI; A KOBAYASHI
SYNTHETIC METALS, 56, 1, 2039-2043, Mar. 1993, Peer-reviwed
Scientific journal, English

INTRAMOLECULAR MAGNETIC INTERACTION OF TRANSITION-METAL IONS IN COMPLEXES CONTAINING PYRIMIDINE OR PYRAZINE AS A BRIDGING LIGAND
T ISHIDA; S MITSUBORI; T NOGAMI; H IWAMURA
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 232, 705-710, 1993, Peer-reviwed
Scientific journal, English

Addition Reactions of Benzyne, Dienes, Dichlorocarbene, and Oxygen to C60
M. Tsuda; T. Ishida; T. Nogami; S. Kurono; M. Ohashi
Fullerene Science and Technology, 1, 275-285, 1993, Peer-reviwed
Scientific journal, English

INTERMOLECULAR FERROMAGNETIC INTERACTION OF 4-(1-PYRENYLMETHYLENEAMINO)-2,2,6,6-TETRAMETHYLPIPERIDIN-1-OXYL
T ISHIDA; K TOMIOKA; T NOGAMI; H IWAMURA; K YAMAGUCHI; W MORI; Y SHIROTA
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 232, 99-102, 1993, Peer-reviwed
Scientific journal, English

Intramolecular Magnetic Interaction of Transition Metal Ions in Complexes Containing Pyrimidine or Pyrazine as a Bridging Ligand
T. Ishida; S.-I. Mitsubori; T. Nogami; H. Iwamura
Molecular Crystals and Liquid Crystals, 233, 345-350, 1993, Peer-reviwed
International conference proceedings, English

INTRAMOLECULAR MAGNETIC COUPLING BETWEEN 2-NITRENE OR 2-NITROXIDE UNITS THROUGH 1,1-DIPHENYLETHYLENE CHROMOPHORES - ISOMERIC DINITRENES AND DINITROXIDES RELATED IN CONNECTIVITY TO TRIMETHYLENEMETHANE, TETRAMETHYLENEETHANE, AND PENTAMETHYLENEPROPANE
T MATSUMOTO; T ISHIDA; N KOGA; H IWAMURA
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 114, 25, 9952-9959, Dec. 1992, Peer-reviwed
Scientific journal, English

ADDITION-REACTION OF BENZYNE TO C60
M TSUDA; T ISHIDA; T NOGAMI; S KURONO; M OHASHI
CHEMISTRY LETTERS, 12, 2333-2334, Dec. 1992, Peer-reviwed
Scientific journal, English

APPROACHES FROM HIGH-SPIN ORGANIC-MOLECULES TO ORGANIC FERROMAGNETS
T ISHIDA; K INOUE; N KOGA; N NAKAMURA; H IWAMURA
ELECTRICAL, OPTICAL, AND MAGNETIC PROPERTIES OF ORGANIC SOLID STATE MATERIALS, 247, 407-416, 1992, Peer-reviwed
International conference proceedings, English

BIS[3-TERT-BUTYL-5-(N-OXY-TERT-BUTYLAMINO)PHENYL] NITROXIDE IN A QUARTET GROUND-STATE - A PROTOTYPE FOR PERSISTENT HIGH-SPIN POLY[ (OXYIMINO)-1,3-PHENYLENES]
T ISHIDA; H IWAMURA
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 113, 11, 4238-4241, May 1991, Peer-reviwed
Scientific journal, English

SYNTHESES AND MAGNETIC-PROPERTIES OF POLY(PHENYLACETYLENES) CARRYING A (1-OXIDO-3-OXY-4,4,5,5-TETRAMETHYL-2-IMIDAZOLIN-2-YL) GROUP AT THE META OR PARA POSITION OF THE PHENYL RING
A FUJII; T ISHIDA; N KOGA; H IWAMURA
MACROMOLECULES, 24, 5, 1077-1082, Mar. 1991, Peer-reviwed
Scientific journal, English

AN IMPROVED SYNTHESIS OF POLY(META-ANILINE) AND THE MAGNETIC-PROPERTIES OF ITS HCL SALT
T ISHIDA; H IWAMURA
CHEMISTRY LETTERS, 2, 317-318, Feb. 1991, Peer-reviwed
Scientific journal, English

THIOALDEHYDE ANION RADICALS
D CASARINI; L LUNAZZI; G PLACUCCI; T ISHIDA; A ISHII; R OKAZAKI
JOURNAL OF ORGANIC CHEMISTRY, 53, 7, 1582-1584, Apr. 1988, Peer-reviwed
Scientific journal, English

UNUSUALLY READY CLEAVAGE OF AN S-C-ALPHA BOND IN STERICALLY CROWDED SULFOXIDES
R OKAZAKI; T ISHIDA; N INAMOTO
JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1, 40-41, Jan. 1988, Peer-reviwed
Scientific journal, English

Biradical pincers involving two phenylene, biphenylene or terphenylene arms: Evidence for approach of two terminal nitroxides
R. Uesugi; R. Takano; T. Ishida
Last, Tetrahedron, 1900, Peer-reviwed
Scientific journal, Japanese

分子磁性研究の展開と深化：4f-3d単分子磁石の周辺研究を一例として
石田尚行
Oct. 2012, 電子スピンサイエンス（表紙）, 10 (Autumn), 94-99, Japanese, Introduction other

Evaluation of Exchange Interaction of Rare-Earth Nanomagnets
T. Ishida; H. Nojiri; S. Yoshii; G. Tanaka
22 Jun. 2011, NanotechJapan Bulletin, 4, 3, 1-10, English, Introduction commerce magazine

希土類ナノ磁石の交換相互作用評価
石田尚行; 野尻浩之; 吉居俊輔; 田中 豪
Dec. 2010, NanotechJapan Bulletin（Web マガジン：フォーカス26）, 第14回, nanonet.nims.go.jp/magazine/, Japanese, Introduction other

超分子的に制御できる分子磁性
石田尚行; 野上 隆
2003, 日本応用磁気学会誌, 27, 811-816, Japanese, Introduction other

特殊文字が正しく表示されていませんので、http://ttf.pc.uec.ac.jp/www.page/paperlist_TI.pdf もご参照下さい。
T. Ishida
2000, 9999, 1-9999, English, Peer-reviwed, Others

Synthesis and Applications of New Spin Crossover Compounds (Crystals Special Issue )
A. Ondo; T. Ishida
Scholarly book, English, Contributor, Cobalt(II) Terpyridin-4'-yl Nitroxide Complex as an Exchange-Coupled Spin-Crossover Material, MDPI, Sep. 2019

Spin-Crossover Complexes (Inorganics Special Issue )
A. Kimura; T. Ishida
Scholarly book, English, Contributor, Pybox-Iron(II) Spin-Crossover Complexes with Substituent Effects from the 4-Position of the Pyridine Ring (Pybox = 2,6-Bis(oxazolin-2-yl)pyridine), MDPI, 28 May 2018, 9783038428251

CSJカレントレビュー16「スピン化学が拓く分子磁性の新展開：設計から機能化まで」
石田尚行
Scholarly book, Japanese, Contributor, f-d and f-p heterospin single-molecule magnets, 化学同人, 01 Aug. 2014, 9784759813760

Multifunctional Conducting Molecular Materials
M. Suzuki; T. Fujii; T. Nogami; T. Hirano; T. Ishida
Scholarly book, English, Contributor, Electron Donors from Natural Products: Donating and Ligating Abilities and Charge-Transfer Complex Formation of Imidazo[1,2-a]pyrazin-3(7H)-ones, RSC Publishing, 2007, 0854044965

Molecular Magnetism - New Magnetic Materials
T. Nogami; T. Ishida
Scholarly book, English, Contributor, Chap. 5.1, Molecular Design and Synthesis for Organic Molecular Magnetism - Novel Ferromagnetic TEMPO Radical Crystals, Kodansha-Gordon and Breach Science Publishers, 2000, 9056993070

Recent Research Development of Pure and Applied Chemistry Volume 1
T. Ishida; T. Nogami
Scholarly book, English, Contributor, Pyrimidine-Bridged Transition Metal Complexes as a Polymer Approach to Molecule-Based Ferromagnets, Transworld Research Network, 1998, 8186846131

Advanced Materials '93 1st Edition: Ceramics, Powders, Corrosion and Advanced Processing
T. Nogami; M. Tsuda; T. Ishida; S. Kurono; M. Ohashi
Scholarly book, English, Contributor, Synthesis and Characterization of C60 Adducts with Benzyne, Dichlorocarbene, Dienes, and Oxygen, Elsevier, 1994

New Functionality Materials, Vol. C, Synthetic Process and Control of Functionality Materials
T. Nogami; T. Ishida
Scholarly book, English, Contributor, Magnetic Properties and Nonlinear Optical Properties of Organic Materials, Elsevier Science, 1993, 044481616X

Exchange Interactions in Fe(II) SCO Complexes with Paramagnetic Ligands
R. Takano; A. Hase; Y. Noguchi; T. Ishida
Pacifichem 2025
15 Dec. 2025- 20 Dec. 2025

Preorganized Bisnitroxide Systems Switching Between Diamagnetism and Paramagnetism
M. Somei; R. Uesugi; D. Iida; R. Takano; T. Ishida
English, Pacifichem 2025, Invited
15 Dec. 2025- 20 Dec. 2025

Switching Diamagnetism and Paramagnetism in Naphthalene Bisnitroxides
R. Takano; R. Uesugi; D. Iida; T. Ishida
English, International Conference of Asian Union of Magnetics Societies 2025, Peer-reviewed
2025
21 Apr. 2025- 24 Apr. 2025

Effects of Intermolecular Interactions on the SCO Temperature in Stereoisomeric Iron(II) Complexes with Chiral Ligands
R. Takano; B. Ay; T. Ishida
The 105th CSJ Annual Meeting
26 Mar. 2025- 29 Mar. 2025

有機ラジカル希土類錯体の材料科学
石田尚行
京都大学大学院理学系研究科 講演会, Invited
2024
02 Dec. 2024- 02 Dec. 2024

ヘテロスピン系の物理化学
石田尚行
京都大学大学院理学系研究科 集中講義, Invited
02 Dec. 2024- 02 Dec. 2024

Strongly exchange-coupled 2p, 3d, and 4f heterospin linear array in coordination polymers
N. Haga; S. Ueno; L. Lyu; S. Tsukii; T. Ishida
Oral presentation, English, The 45th International Conference on Coordination Chemistry (ICCC 2024), Peer-reviewed
28 Jul. 2024- 03 Aug. 2024

Origin of Stepwise and Incomplete Spin Crossover in Stereoisomeric or Crystallographically-Independent Units in Iron(II) Bisdiimine Complexes
R. Takano; S.-i. Takeshi; S. Watanabe; Y. Kobayashi; T. Ishida
Poster presentation, English, The 45th International Conference on Coordination Chemistry (ICCC 2024), Peer-reviewed
28 Jul. 2024- 03 Aug. 2024

Stereoisomeric Effects of Ligand and Coordination Chirality on Iron(II) Bis(diimine) Spin Crossover
R. Takano; M. Yoshida; Y. Kobayashi; T. Ishida
The 74th JSCC Conference
18 Jun. 2024- 20 Jun. 2024

Structures and Magnetic Properties of Three Types of Complexes Prepared from Squarate and Erbium Nitrate
R. Takano; K. Masuda; Y. Kitagawa; T. Ishida
The 104th CSJ Annual Meeting
18 Mar. 2024- 21 Mar. 2024

Dia-/Paramagnetic Distinguishable Phases in Bisnitroxide Crystals
S. Ueno; R. Uesugi; T. Ishida
Keynote oral presentation, English, The 9th International Conference on Nitroxide Radicals (SPIN-2023), Invited, Peer-reviewed
24 Sep. 2023- 28 Sep. 2023

Magneticaly Diluted Systems of Bilayer Multinuclear Complex with Heavy Lanthanide and Squarate Ions
R. Takano; Y. Kitagawa; M. Kofu; S. Ohira-Kawamura; T. Ishida
Oral presentation, The 73rd JSCC Conference
21 Sep. 2023- 23 Sep. 2023

Naphthalene-1,8-diyl Bis(tert-butyl Nitroxide) for a Para-/Diamagnetic Switching Material
R. Uesugi; T. Ishida
Oral presentation, English, The 18th International Conference on Molecule-Based Magnets (ICMM2023), Peer-reviewed
10 Sep. 2023- 14 Sep. 2023

Systematic Study on Magnetic Properties of Bilayered Heavy Lanthanide Squarate Hydrates
R. Takano; K. Masuda; Y. Kitagawa; M. Kofu; S. Ohira-Kawamura; T. Ishida
Poster presentation, The 18th International Conference on Molecule-Based Magnets (ICMM2023)
10 Sep. 2023- 14 Sep. 2023

Mono- and Trinuclear Lanthanide Complexes Derived from Highly Symmetrical Ligand 2,4,6-Tris(2-pyrimidyl)-1,3,5-triazine: Synthesis, Structure and Magnetic Properties
B. Ay; T. Ishida
Oral presentation, English, The 18th International Conference on Molecule-Based Magnets (ICMM2023), Peer-reviewed
10 Sep. 2023- 14 Sep. 2023

Stereoisomeric Effect on Spin Crossover in Iron(II) Bisdiimine Dithiocyanates
R. Takano; M. Yoshida; B. Ay; N. Mochida; Y. Kobayashi; T. Ishida
Oral presentation, English, The 18th International Conference on Molecule-Based Magnets (ICMM2023), Peer-reviewed
10 Sep. 2023- 14 Sep. 2023

pH effect on hydrothermal synthesis of the copper organodiphosphonate polymers: Investigation of luminescence and magnetic properties
B. Ay; T. Ishida
Oral presentation, English, The 103rd CSJ Annual Meeting, The 103rd CSJ Annual Meeting organizing comittee, Noda, Domestic conference
22 Mar. 2023

Photoluminescence Properties of a Three-Dimensional Coordination Polymer from Rare Earth Ion and Small Ligands
R. Takano; B. Ay; T. Ishida
Oral presentation, English, The 103rd CSJ Annual Meeting, The 103rd CSJ Annual Meeting organizing comittee, Noda, Domestic conference
22 Mar. 2023

Magnetic Properties of Polymeric Bilayer Complexes of Heavy Lanthanide Ions Bridged with a Dianionic Squarate
R. Takano; T. Ishida
The 72nd JSCC Conference
26 Sep. 2022- 28 Sep. 2022

Chains and Macrocycles of Heavy Lanthanide Ions Bridged with a Triplet Biradical
T. Ishida; S. Ito; S. Ueno; S.-i. Hatanaka
Oral presentation, English, The 44th International Conference on Coordination Chemistry (ICCC 2022), ICCC organizing comittee, Rimini, Italy, Peer-reviewed, International conference
28 Aug. 2022
28 Aug. 2022- 02 Sep. 2022

Key to Tune Crystal Field for Multistep Spin Crossover in Dinuclear Iron(II) Helicates with Diimine Ligands
R. Takano; T. Ishida
Oral presentation, English, The 44th International Conference on Coordination Chemistry (ICCC2022), ICCC organizing comittee, Rimini, Italy, International conference
28 Aug. 2022
28 Aug. 2022- 02 Sep. 2022

4f-2pヘテロスピン系ナノ磁石と その関連材料科学
石田尚行
Invited oral presentation, Japanese, 新化学技術推進協会 先端化学・材料技術部会 新素材分科会, Invited, 公益社団法人 新化学技術推進協会, オンライン, Domestic conference
12 Mar. 2021
12 Mar. 2021- 12 Mar. 2021

希土類イオンを使った分子性磁性材料
石田尚行
Invited oral presentation, Japanese, 近畿化学協会エレクトロニクス部会研究会「希少金属を取り巻く基礎研究と国際マーケットの現況」, Invited, 一般社団法人 近畿化学協会, オンライン, Domestic conference
03 Dec. 2020
03 Dec. 2020- 03 Dec. 2020

Synthesis and Magnetic Properties of Coordination Compounds with π-Extended Multi-Radical-Substituted Ligands
Y. Gokan; T. Kanetomo; T. Ishida
Poster presentation, English, The Irago Conference 2019, UEC Tokyo, International conference
29 Oct. 2019

Systematic Study on Iron(II) Spin Crossover Complexes Chelated with 2,6-Bis(1-pyrazolyl)pyridine Ligands Carrying Alkyl Groups
S. Soda; T. Ishida
Poster presentation, English, The Irago Conference 2019, UEC Tokyo, International conference
29 Oct. 2019

国内学会（年会、研究会）一般発表については、http://ttf.pc.uec.ac.jp/www.page/conflist_TI.pdf をご参照下さい。
石田尚行ら
Others, Japanese
2019

Structures and Magnetic Properties of Lanthanide Complexes Involving Ground Triplet Bisnitroxide Radicals
H. Sekine; T. Ishida
Oral presentation, English, The Irago Conference 2018, Irago Conf Committee, Shinjuku, Tokyo, International conference
01 Nov. 2018

Biphenyl-Hinged Bisnitroxide Biradicals toward Intramolecular Para- and Diamagnetic Switching
M. Arai; T. Ishida
Oral presentation, English, The Irago Conference 2018, Irago Conf Committee, Shinjuku, Tokyo, International conference
01 Nov. 2018

Synthetic Investigation for Spiro-Junctioned Biradical Compounds
K. Ichihashi; T. Ishida
Oral presentation, English, The Irago Conference 2018, Irago Conf Committee, Shinjuku, Tokyo, International conference
01 Nov. 2018

Gradual Structure Transition and Novel Spin Transition/Crossover
T. Ishida
Invited oral presentation, English, 2nd RIKEN Symposium International Workshop on Organic Molecular Systems/4th International Conference on Functional Materials Science, Invited, RIKEN & FMS-net, Bali, Indonesia, International conference
Nov. 2018

Moving Molecules in Crystalline Solids: Gradual Structure Transition and Spin Transition/Crossover
T. Ishida
Invited oral presentation, English, International Conference on Condensed Matters and Advanced Materials (IC2MAM 2018), IC2MAM, Malang, Indonesia, International conference
05 Sep. 2018

Magneto-Structural Relationship on Metal Complexes Using Dual Radical Chelate Ligand Showing Ground Triplet State
A. Okazawa; T. Ishida; N. Kojima
Oral presentation, English, The 43th International Conference on Coordination Chemistry, ICCC2018, Sendai, International conference
30 Jul. 2018

Biradical-Bridged Lanthanide Complexes: Synthesis, Crystal Structures, and Physical Properties
T. Kanetomo; S. Yoshikado; K. Makimura; T. Ishida; M. Enomoto
Oral presentation, English, The 43th International Conference on Coordination Chemistry, ICCC2018, Sendai, International conference
30 Jul. 2018

Unexpected Complexes from meta-Phenylene Bis(tert-butyl Nitroxides) and Gadolinium(III) 1,1,1,5,5,5-Hexafluoropentane-2,4-dionate
H. Sekine; T. Ishida
Oral presentation, English, The Irago Conference 2017, UEC-Tokyo, Chofu, Tokyo, International conference
Nov. 2017

Substituent Effect in Spin-Crossover Behavior of Pybox-iron(II) Complexes (Pybox = 2,6-Bis(oxazolin-2-yl)pyridine)
A. Kimura; T. Ishida
Oral presentation, English, The Irago Conference 2017, UEC-Tokyo, Chofu, Tokyo, International conference
Nov. 2017

Sonochemical Synthesis of Magnetic Nanoparticles
S. Uchiyama; H. Miyashita; T. Ishida; S.-i. Hatanaka
Oral presentation, English, The Irago Conference 2017, UEC-Tokyo, Chofu, Tokyo, International conference
Nov. 2017

Molecular Nanomagnets Consisting of Exchange-Coupled Heavy Rare-Earth Metal Ions and Nitroxide Radicals
T. Kanetomo; T. Nakamura; R. Murakami; T. Ishida
Oral presentation, English, International Symposium on Novel Energy Nanomaterials, Catalysts and Surfaces for Future Earth, UEC, Chofu, Tokyo, International conference
Oct. 2017

Ground Triplet Spirobiacridine-N,N’-dioxyls: Preparation, Structures, and Magnetic Properties
K. Ichihashi; T. Kanetomo; T. Ishida
Oral presentation, English, International Symposium on Novel Energy Nanomaterials, Catalysts and Surfaces for Future Earth, UEC, Chofu, Tokyo, International conference
Oct. 2017

Nanomagnets of Lanthanide Complexes Using 2,2,6,6-Tetramethylpiperidine 1-Oxyl Ligands
N. Koizumi; T. Ishida
Oral presentation, English, International Symposium on Novel Energy Nanomaterials, Catalysts and Surfaces for Future Earth, UEC, Chofu, Tokyo, International conference
Oct. 2017

Do Organic Free Radicals Dream of Future Magnets?
T. Ishida; N. Koizumi; H. Sekine
Oral presentation, English, RIKEN Symposium International Workshop on Organic Molecular Systems, RIKEN, Penang, Malaysia, International conference
Aug. 2017

重希土類とニトロキシドラジカルからなる単分子磁石
石田尚行; 小泉直樹; 中村健志; 村上里奈; 金友拓哉
Invited oral presentation, Japanese, 電気通信大学ナノトライボロジー研究センター開設シンポジウム, 電気通信大学ナノトライボロジー研究センター, 調布市, Domestic conference
08 Mar. 2017

Exchange-Coupled Heavy-Lanthanoid and Nitroxide Molecular Magnets
T. Kanetomo; T. Nakamura; R. Murakami; T. Ishida
Invited oral presentation, English, Supramolecular Science-Based Organic Materials and Devices - 10th High-tech Research Center International Symposium, Invited, Toho University, Narashino, Japan, International conference
10 Dec. 2016

Spin-Parity Behavior in the Exchange-Coupled Lanthanoid-Nitroxide Molecular Magnets
T. Ishida
Invited oral presentation, English, The International Conference on Advanced Materials Science and Technology, Indonesia (ICAMST 2016), Invited, ICAMST organizing comittee, Malang, Indonesia, International conference
27 Sep. 2016

Chemical Trend on the Lanthanide-Radical Exchange Coupling
T. Ishida; T. Nakamura; T. Kihara; H. Nojiri
Oral presentation, English, The 15th International Conference on Molecule-based Magnets (ICMM 2016), ICMM, Sendai, International conference
Sep. 2016

Ferromagnetically Coupled Lanthanoid-Radical Complexes Showing Slow Reversal of Magnetization
T. Kanetomo; T. Yoshitake; H. Nojiri; T. Ishida
Oral presentation, English, The 15th International Conference on Molecule-based Magnets (ICMM 2016), ICMM, Sendai, International conference
Sep. 2016

Structure and Magnetic Properties of Copper Dinuclear Spiro-Complexes Involving Tetraiminoneopentane
A. Kimura; T. Ishida
Oral presentation, English, The 15th International Conference on Molecule-based Magnets (ICMM 2016), ICMM, Sendai, International conference
Sep. 2016

Structure and Magnetic Properties of Bisnitroxide Pincer Compounds with a Spacing-Control Hinge
N. Koizumi; T. Ishida
Oral presentation, English, The 15th International Conference on Molecule-based Magnets (ICMM 2016), ICMM, Sendai, International conference
Sep. 2016

Study on Imidazolate-Bridged Divalent 3d Metal Ion Complexes Capped with Tris(1-pyrazolyl)methane
T. Kogane; M. Yamazaki; T. Kanetomo; T. Ishida
Oral presentation, English, The 15th International Conference on Molecule-based Magnets (ICMM 2016), ICMM, Sendai, International conference
Sep. 2016

Syntheses, Crystal Structures, and Magnetic Properties of Copper(II) Complexes with Bischelate and High-Spin Biradical Ligand
A. Okazawa; T. Ishida; K. Ogawa; N. Kojima
Oral presentation, English, The 15th International Conference on Molecule-based Magnets (ICMM 2016), ICMM, Sendai, International conference
Sep. 2016

Molecular Design for the Strongest Magnetic Couplings in Gadolinium-Nitroxide Systems
T. Ishida
Invited oral presentation, English, Osaka City University International Conference (OCUIC 2016), Invited, Osaka City University, International conference
31 Aug. 2016

Structures and Magnetic Properties of Transition-Metal Complexes Involving Bipyridinyl Nitroxide Radicals
A. Ondo; T. Ishida
Oral presentation, English, The Irago Conference 2016, UEC & TUT, Chofu, International conference
2016

Development of Biradical Ligands toward [2×2] Molecular Grids
K. Ichihashi; S. Ohba; T. Ishida
Oral presentation, English, The Irago Conference 2016, UEC & TUT, Chofu, International conference
2016

Synthesis and Magnetic Properties of Transition Metal Complexes with Multichelating and High-Spin Radical Ligands
A. Okazawa; T. Ishida; N. Kojima; K. Ogawa
Poster presentation, English, Pacifichem2015, Hawaii, USA, International conference
Dec. 2015

Strongest Ferromagnetic Exchange Coupling in Gadolinium(III)-Nitroxide Coordination Compounds
T. Kanetomo; T. Yoshitake; T. Ishida
Poster presentation, English, Pacifichem2015, Hawaii, USA, International conference
Dec. 2015

Study on Gd-O-N Angular Dependence of Magnetic Exchange Interaction in Gadolinium(III) Complexes Having Aliphatic Nitroxide Radicals
T. Nakamura; T. Ishida
Poster presentation, English, The Irago Conference 2015, International conference
Oct. 2015

Pyridine-2,6-diyl Dinitroxides as Room-Temperature Triplet Biradicals
H. Kawakami; A. Tonegawa; T. Ishida
Poster presentation, English, The Irago Conference 2015, International conference
Oct. 2015

Luminescent Single-Ion Magnets from Lanthanoid(III) Complexes with Monodentate Ketone Ligands
T. Kanetomo; T. Ishida
Poster presentation, English, The Irago Conference 2015, International conference
Oct. 2015

ヘテロスピン単分子磁石の設計、開発、計測
石田尚行
Invited oral presentation, Japanese, 日本物理学会第70回年次大会, Invited, Domestic conference
22 Mar. 2015

The Relationship Between Torsion and Anisotropic Exchange Coupling in a Tb(III)-Radical Complex
M. L. Baker; T. Tanaka; S. Kawamura-Ohira; K. Nakajima; T. Ishida; H. Nojiri
Oral presentation, English, APS March Meeting, APS, San Antonio, USA, International conference
Mar. 2015

Evaluation of Dysprosium(III)-Copper(II) Exchange Coupling Parameters and Relation with the Bridging Geometry
Y. Ida; T. Ishida; S. Ghosh; A. Ghosh; H. Nojiri
Oral presentation, English, Asia-Pacific EPR/ESR Symposium/International EPR (ESR) Society Symposium/the 53th SEST Annual Meeting (APES2014-IES-SEST2014), Nara, International conference
16 Nov. 2014

Study on Magnetic Anisotropy and Slow Magnetization Relaxation of a Gadolinium(III)-Radical Complex
T. Kanetomo; H. Nojiri; T. Ishida
Oral presentation, English, Asia-Pacific EPR/ESR Symposium/International EPR (ESR) Society Symposium/the 53th SEST Annual Meeting (APES2014-IES-SEST2014), Nara, International conference
15 Nov. 2014

Exchange Couplings in Mono-, Di-, and Polymeric [DyCu2] Compounds
Y. Ida; A. Ghosh; T. Ishida
Oral presentation, English, 5th Topical Meeting on Spins in Organic Semiconductors (SpinOS 2014), Himeji, International conference
14 Oct. 2014

Strong exchange couplings in lanthanide complexes with aliphatic nitroxide radicals
T. Nakamura; R. Murakami; T. Ishida
Oral presentation, English, The 14th International Conference on Molecule-Based Magnets (ICMM 2014), Saint Petersburg, Russia, International conference
08 Jul. 2014

Structures and Magnetic Properties of Two Phases from Imidazolate-Bridged Copper(II) Pyrazolylborate Complexes
T. Kogane; T. Kanetomo; H. Muroyama; T. Ishida
Oral presentation, English, The 14th International Conference on Molecule-Based Magnets (ICMM 2014), Saint Petersburg, Russia, International conference
08 Jul. 2014

Exchange Interactions within 4f-2p Coupled Electron Systems
M. L. Baker; T. Tanaka; G. G. Simeoni; K. Nakajima; Seiko Ohira-Kawamura; T. Ishida; H. Nojiri
Oral presentation, English, The 14th International Conference on Molecule-Based Magnets (ICMM 2014), Saint Petersburg, Russia, International conference
08 Jul. 2014

Spin-Crossover Thermal Hysteresis and Light-Induced Effect on Iron(II) Complexes with Tripodal Tris(2-pyridyl)methanol
M. Yamasaki; T. Ishida
Oral presentation, English, The 14th International Conference on Molecule-Based Magnets (ICMM 2014), Saint Petersburg, Russia, International conference
07 Jul. 2014

Single-Molecule Magnets Involving Strong Exchange in Lanthanoid Complexes with 2,2’-Bipyridin-6-yl tert-Butyl Nitroxide
T. Kanetomo; S. Yoshii; H. Nojiri; T. Ishida
Oral presentation, English, The 14th International Conference on Molecule-Based Magnets (ICMM 2014), Saint Petersburg, Russia, International conference
06 Jul. 2014

Preparation and characterization of [Gd(hfac)3(DTBN)(H2O)] (DTBN = di-t-butyl nitroxide). Ferromagnetic Gd3+-Gd3+ super-superexchange
T. Kanetomo; T. Ishida
Invited oral presentation, English, The 7th Japanese-Russian Workshop on Open Shell Compounds and Molecular Spin Devices, Invited, Japanese-Russian Workshop Organizing Committee, Awaji Island, International conference
Nov. 2013

Exchange Coupling of Rare-earth-Radical Hetero-Spin Magnetic Clusters-ESR and Neutron Scattering Study
T. Tanaka; M. Baker; H. Nojiri; T. Ishida
Oral presentation, English, The 12th Asia Pacific Physics Conference
Jul. 2013

Relatively Strong Exchange Coupling in Lanthanoid-Nitroxide Heterospin Compounds
T. Kanetomo; R. Murakami; T. Ishida
Oral presentation, English, The 1st Awaji International Workshop on Electron Spin Science & Technology: Biological and Materials Science Oriented Applications
Jun. 2013

Entropy-Driven Three-Centered Spin-Crossover-Like Behavior in a Nickel(II) Bis(nitroxide) Complex
Y. Homma; T. Ishida
Invited oral presentation, English, The 1st Awaji International Workshop on Electron Spin Science & Technology: Biological and Materials Science Oriented Applications, The 1st Awaji International Workshop on Electron Spin Science & Technology: Biological and Materials Science Oriented Applications, Awaji, International conference
Jun. 2013

Determination of Crystal-Field Energy Levels and Temperature Dependence of Magnetic Susceptibility for Dy3+ in [Dy2Pd] Heterometallic Complex
M. Karbowiak; C. Rudowicz; T. Ishida
Oral presentation, English, International Conference on Rare Earth Materials
Apr. 2013

3d-2p and 4f-2p Heterospin Molecules
T. Ishida
Invited oral presentation, English, Workshop on Molecular Magnets 2013, Workshop on Molecular Magnets 2013, Sendai, International conference
Feb. 2013

Spin-Transition-Like Behavior in a Novel Heterospin Triad: Bis(nitroxide)-Chelated Nickel(II) Chloride
Y. Homma; T. Ishida
Oral presentation, English, International Symposium on Materials Science Opened by Molecular Degrees of Freedom
Dec. 2012

Magnetic and EPR Studies of S = 3 Nickel(II) Triangular Complexes Having μ3-Hydroxo- and μ3-Halogeno-Bridges
Y. Ida; K. Miyamoto; E. Horn; M. L. Baker; H. Nojiri; T. Ishida
Oral presentation, English, The 13th International Conference on Molecule-Based Magnets
Oct. 2012

Magnetic and EPR Studies on Radical-Lanthanide-Based Single-Molecule Magnets
T. Ishida; R. Murakami; T. Kanetomo; M. L. Baker; S. Yoshii; H. Nojiri
Oral presentation, English, The 13th International Conference on Molecule-Based Magnets
Oct. 2012

Crystal Structures and Magnetic Properties of Two-dimensional Copper(II) Complexes Bridged with Pyrazine-2-carboxamide
M. Yoshida; T. Shimada; T. Ishida; T. Kogane
Oral presentation, English, The 13th International Conference on Molecule-Based Magnets
Oct. 2012

Chemical Modification of 4f-3d Heterometallic [Ln2Ni]-type Single-Molecule Magnets
A. Okazawa; T. Ishida; H. Nojiri; S. Yoshii; N. Kojima
Oral presentation, English, The 13th International Conference on Molecule-Based Magnets
Oct. 2012

A Novel Fluoride-bridged Ni(II) Trimeric Complex Having N-Alkylethylenediamine
K. Miyamoto; Y. Ishikawa; E. Horn; Y. Ida; T. Ishida
Oral presentation, English, The 40th International Conference on Coordination Chemistry
Sep. 2012

Synthesis, Properties and Structure of Nickel(II) Tri-mer and Nickel(II) Mono-mer Complexes
Y. Ishikawa; K. Miyamoto; E. Horn; Y. Ida; T. Ishida
Oral presentation, English, The 40th International Conference on Coordination Chemistry
Sep. 2012

4f-3dヘテロ金属錯体の磁気的相互作用
石田尚行
Invited oral presentation, Japanese, 日本物理学会秋季大会, 日本物理学会, Domestic conference
Sep. 2012

21aCD-5 Trends in Exchange Coupling in Re-Radical Complex
Nojiri H.; Tanaka T.; Baker M.; Ishida T.
Japanese, Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS)
24 Aug. 2012
24 Aug. 2012- 24 Aug. 2012

Heterospin 4f-3d and 4f-2p Magnets
T. Ishida; R. Murakami; T. Kanetomo; T. Shimada; S. Yoshii; H. Nojiri
Invited oral presentation, English, The Fujihara Seminar: Frontier and Perspectives in Molecule-Based Quantum Magnets, The Fujihara Seminar, Sendai, International conference
May 2012

Hetero-spin 4f-3d and 4f-2p magnets
T. Ishida
Oral presentation, English, Frontier and Perspectives in Molecule-Based Quantum Magnets
May 2012

Synthesis and Magnetic Study of Triplet Biradicals toward Materials Showing Thermally Induced Magnetism
T. Konno; S. Hirose; T. Ishida
Oral presentation, English, Open-shell Organic Molecules - Synthesis and Electronic Structure Freedom
Oct. 2011

Ferromagnetic Coupling in Hydro Nitronyl Nitroxide-Gd(III) and Antiferromagnetic Coupling in 2-Pyridyl Nitroxide-Gd(III) Complexes
R. Murakami; N. Ikegaya; T. Kanetomo; T. Ishida
Oral presentation, English, Open-shell Organic Molecules - Synthesis and Electronic Structure Freedom
Oct. 2011

Magnetic Exchange Couplings Showing a Chemical Trend in 4f-3d Heterometallic Complexes
T. Ishida
Invited oral presentation, English, Workshop on Development of Functionalized Molecule-based Magnetic Materials, International Collaboration Center of Institute for Materials Reserch, Tohoku Univ., Sendai, International conference
Sep. 2011

Long-Range Order and Motion of Magnetic Domain Wall in Quasi One-Dimensional Co-Radical Coordination Polymer
T. Ishida
Invited oral presentation, English, The 3rd International Advisory Committee for the RIKEN-RAL Muon Facility, RIKEN-RAL, Wako, International conference
Feb. 2011

Supramolecular Chemistry Using Nitroxide Biradical Polyethers. Structural, Magnetic, and ESR Studies of Their Complex Formation with Metal Ions
S. Osada; T. Ishida
Oral presentation, English, The 2010 International Chemical Congress of Pacific Basin Societies
Dec. 2010

Determination of Exchange Couplings in Dinuclear 4f-3d Heterometallic Nano-Sized Magnets
T. Ishida; R. Watanabe; K. Fujiwara; A. Okazawa; G. Tanaka; S. Yoshii; H. Nojiri
Oral presentation, English, The 2010 International Chemical Congress of Pacific Basin Societies
Dec. 2010

Spin-Transition-Like Behavior of Radical Chelate Complexes Accompanied by Twisted Deformation around Copper(II)-Nitroxide Coordination Bond
A. Okazawa; T. Ishida
Oral presentation, English, The 2010 International Chemical Congress of Pacific Basin Societies
Dec. 2010

Exchange Couplings in One-dimentionally Arrayed 4f-3d Heterometallic [Ln2Cu2]n Compounds
A. Okazawa; K. Fujiwara; R. Watanabe; S. Yoshii; H. Nojiri; T. Ishida
Oral presentation, English, The 12th International Conference on Molecule-based magnets
Oct. 2010

Ferromagnetic Oxovanadium(IV) Complexes Chelated with Tetrahalosalen Ligands
K. Fujiwara; T. Ishida
Oral presentation, English, The 12th International Conference on Molecule-based magnets
Oct. 2010

2,2’-Bipyridine-6,6’-diyl Bisnitroxide as A Paramagnetic Host
K. Koide; T. Ishida
Oral presentation, English, The 12th International Conference on Molecule-based magnets
Oct. 2010

Single-Molecule Magnet Behavior Enhanced by Magnetic Coupling between 4f-3d Spins
A. Okazawa; H. Nojiri; T. Ishida; N. Kojima
Oral presentation, English, The 12th International Conference on Molecule-based magnets
Oct. 2010

Attempted Synthesis of Axial-Equatorial Pyrazine-Bridged Copper(II) Complexes toward Homometallic Ferromagnetic Compounds
R. Watanabe; T. Shimada; N. Koyama; T. Ishida; T. Kogane
Oral presentation, English, The 12th International Conference on Molecule-based magnets
Oct. 2010

Spin dynamics of cobalt-radical one-dimensional magnets
T. Ishida; N. Ishii; Y. Okamura; Y. Ishii; I. Watanabe
Oral presentation, English, ISSP-MDF Joint International Workshop Spin-Related Phenomena in Organic Materials
Jul. 2010

The Most Coercive Magnets from Molecule-Based Cobalt(II)-Radical Chain Compounds
T. Ishida; Y. Okamura; N. Ishii; T. Nogami
Oral presentation, English, International Conference on Science and Technology of Synthetic Metals
Jul. 2010

Determination of Exchange Interaction in Lanthanide Nano-Magnets
手老省三; 石田尚行; 野尻浩之
Poster presentation, Japanese, nano tech 2010（国際ナノテクノロジー総合展・技術会議）, Invited, nano tech 実行委員会, 東京ビッグサイト, Domestic conference
17 Feb. 2010

The Hardest Magnets from Alternating Cobalt(II)-Radical Heterospins
T. Ishida; Y. Okamura; I. Watanabe
Invited oral presentation, English, The 3rd Japanese-Russian Workshop on Open Shell Compounds and Molecular Spin Devices, Japanese-Russian Workshop Organizing Committee, Awaji, International conference
Nov. 2009

希土類ナノ磁石の交換相互作用評価
石田尚行; 吉居俊輔; 野尻浩之
Invited oral presentation, Japanese, 文部科学省先端研究施設共用イノベーション創出事業 ナノテクノロジー・ネットワーク H21年度成果報告会, 文部科学省先端研究施設共用イノベーション創出事業 ナノテクノロジー・ネットワーク, Domestic conference
Nov. 2009

27aQJ-11 Exchange coupling and magnetism of RE-3d hetero-metallic magnetic molecule
Nojiri H.; Hayashi M.; Tanaka G.; Yoshii S.; Gomella A.; Ishida T.; Okazawa K.
Japanese, Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS)
18 Aug. 2009
18 Aug. 2009- 18 Aug. 2009

Muon-Spin Rotation and Relaxation on the One-Dimensional Coordination Polymer Magnet [Co(hfac)2•HNN] (HNN = hydro nitronyl nitroxide)
T. Ishida; Y. Okamura; Y. Ishii; I. Watanabe
Oral presentation, English, RIKEN Accelerator Progress Report
2009

Muon-Spin Rotation and Relaxation on the One-Dimensional Coordination Polymer Magnet [Co(hfac)2•HNN] (HNN = hydro nitronyl nitroxide)
T. Ishida; Y. Okamura; Y. Ishii; I. Watanabe
Oral presentation, English, RIKEN-RAL Muon Facility Report
2009

Muon Spin Rotation and Relaxation on the One-Dimensional Cobalt(II)-Radical Coordination Polymer Magnet
T. Ishida; Y. Okamura; I. Watanabe
Oral presentation, English, RIKEN Accelerator Progress Report 2008
2009

Muon-Spin Rotation and Relaxation on the One-Dimensional Coordination Polymer Magnet [Co(hfac)2•HNN] (HNN = hydro nitronyl nitroxide)
T. Ishida; Y. Okamura; Y. Ishii; I. Watanabe
Oral presentation, English, RIKEN Accelerator Progress Report
2009

Muon-Spin Rotation and Relaxation on the One-Dimensional Coordination Polymer Magnet [Co(hfac)2•HNN] (HNN = hydro nitronyl nitroxide)
T. Ishida; Y. Okamura; Y. Ishii; I. Watanabe
Oral presentation, English, RIKEN-RAL Muon Facility Report
2009

Ferromagnetic Coupling of Copper(II) and Nickel(II) Complexes with a Cyclam-based Paramagnetic Host
K. Igarashi; T. Nogami; T. Ishida
Oral presentation, English, 11th International Conference on Molecule-based Magnets
Sep. 2008

Strong Ferromagnetic Exchange Couplings in Copper(II) and Nickel(II) Complexes Chelated with tert-Butyl 5-Methoxyphenyl-2-Pyridyl Nitroxide. A Magneto-Structure Relationship
A. Okazawa; T. Nogami; T. Ishida
Oral presentation, English, 11th International Conference on Molecule-based Magnets
Sep. 2008

Magnetic Properties and Exchange Couplings of One-Dimensionally Arrayed 4f-3d Heterometallic [Ln2Cu2]n Comounds
A. Okazawa; R. Watanabe; H. Nojiri; T. Nogami; T. Ishida
Oral presentation, English, 11th International Conference on Molecule-based Magnets
Sep. 2008

Structures and Magnetic Properties of Tetra- and Polynuclear Copper(II) Complexes Bridged with Imidazolate Rings
N. Koyama; R. Watanabe; T. Ishida; T. Nogami; T. Kogane
Oral presentation, English, 11th International Conference on Molecule-based Magnets
Sep. 2008

20aQH-7 Magnetism and Exchange Interaction in RE-3d Heterometallic Molecular Magnet
Nojiri H.; Yoshii S.; Ishida T.; Okazawa A.
Japanese, Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS)
25 Aug. 2008
25 Aug. 2008- 25 Aug. 2008

High-Field ESR on Molecular-Based Nano-Magnets --- Application to Polyhedron Clusters and Rare-Earth Compounds
Y. Oshima; H. Nojiri; S. Yoshii; P. Kogerler; M. Luban; A. Muller; J. Schnack; A. Okazawa; T. Ishida
Oral presentation, English, Asian-Pacific EPR/ESR Symposium
Jul. 2008

muSR Study on Cobalt(II)-Radical Low-Dimensional Magnets
T. Ishida
Oral presentation, English, The 3rd Program Advisory Committee Meeting for Materials and Life Science
2008

Exchange Coupling and Energy-Level Crossing of 4f-3d Heterometallic Coordination Compounds
T. Ishida; H. Nojiri
Oral presentation, English, KINKEN Research Highlights 2008
2008

Muon Spin Rotation and Relaxation on the One-Dimensional Cobalt(II)-Radical Coordination Polymer Magnet
T. Ishida; Y. Okamura; I. Watanabe
Oral presentation, English, RIKEN-RAL Muon Facility Report
2008

High-Frequency EPR Study on a 4f-3d Single-Chain Magnets [Dy2Cu2]n
A. Okazawa; T. Nogami; H. Nojiri; T. Ishida
Oral presentation, English, 21st Century COE Program International Symposium on Coherent Optical Science
Dec. 2007

Ferro-/Antiferromagnetic Coupling Switch Accompanied by Single-Crystal-to-Single-Crystal Phase Transition in [Cu2(2pyNO)4](BF4)2
T. Ishida; A. Okazawa; T. Nogami; D. Hashizume
Oral presentation, English, A Joint Conference of the International Symposium on Electron Spin Science and the 46th Annual Meeting of the Society of Electron Spin Science and Technology
Nov. 2007

Exchange Coupling and Energy-Level Structure of 4f-3d Heterometallic Single-Molecule Magnets by High-Frequency EPR
A. Okazawa; T. Nogami; H. Nojiri; T. Ishida
Oral presentation, English, A Joint Conference of the International Symposium on Electron Spin Science and the 46th Annual Meeting of the Society of Electron Spin Science and Technology
Nov. 2007

A Family of Nitronyl Nitroxide-Co(II) Chain Complexes Showing Giant Coercivity
Y. Okamura; T. Ishida; T. Nogami
Oral presentation, English, A Joint Conference of the International Symposium on Electron Spin Science and the 46th Annual Meeting of the Society of Electron Spin Science and Technology
Nov. 2007

Study on Chelate Complexes Involving Heteroaromatic Nitroxides
Y. Terakado; A. Okazawa; T. Nogami; T. Ishida
Oral presentation, English, A Joint Conference of the International Symposium on Electron Spin Science and the 46th Annual Meeting of the Society of Electron Spin Science and Technology
Nov. 2007

Spin-crossover Behavior Coupled with Mesophase Transition for Iron(II) Thiocyanate Complexes Chelated with 2-Pyridylmethyleneanilines
Y. Oso; S. Saito; T. Ishida; T. Nogami
Oral presentation, English, A Joint Conference of the International Symposium on Electron Spin Science and the 46th Annual Meeting of the Society of Electron Spin Science and Technology
Nov. 2007

Electron Density Distributions of Intermolecular N...O Contacts in Crystals of Biphenyl-3,5-diyl bis(t-butyl nitroxide)
M. Yasui; S. Mashiyama; K. Ozawa; H. Hosoya; H. Nishimaki; G. Kurokawa; T. Ishida; T. Nogami
Oral presentation, English, Joint Conference of the Asian Crystallographic Association and the Crystallographic Association of Japan, Tsukuba, International conference
Nov. 2006

Magnetic Properties of Molecular Magnets and Spin Chains Studied by Moessbauer Spectroscopy
H.-H. Klauss; F. Gouider; J. Kreitlow; S. Suellow; F. J. Litterst; T. Ishida; T. Nogami; K. Doll; D. J. Price
Oral presentation, English, Latin American Conference on the Applications of the Moessbauer Effects, Rio de Janeiro, Brazil, International conference
Nov. 2006

Mono- and Dinitroxide radicals from 9,9’(10H,10’H)-spirobiacridine: An Approach to a D2d Triplet Biradical
T. Ishida; N. Ishii; H. Mori; M. Ooishi; T. Nogami
Oral presentation, English, 10th international Conference on Molecule-based Magnets
Aug. 2006

Tetranuclear Copper(II) Complexes Sandwitched with Two Tetrahydropyran-2,4,6-triolate Ligands
Y. Morishita; T. Ishida; T. Nogami; T. Kogane
Oral presentation, English, 10th international Conference on Molecule-based Magnets
Aug. 2006

Tetranuclear Heterometallic Cycle Dy2Cu2 Showing Slow Relaxation of Magneitzation Reorientation
S. Ueki; T. Ishida; T. Nogami
Oral presentation, English, 10th international Conference on Molecule-based Magnets
Aug. 2006

Preparation, Structure, and Magnetic Properties of Chelating Compounds of 2-Pyridyl Nitroxide Derivatives
A. Okazawa; T. Shimada; T. Ishida; T. Nogami
Oral presentation, English, 10th international Conference on Molecule-based Magnets
Aug. 2006

Structures and Magnetic Properties of One-dimensional Copper(II) Complexes Bridged with Diazaaromatic Rings
T. Kogane; N. Koyama; T. Ishida; T. Nogami
Oral presentation, English, 10th international Conference on Molecule-based Magnets
Aug. 2006

Electron Donors from Natural Products: Donating Ability and Charge Transfer Complexes of Vargula and Firefly Luciferins
T. Ishida; M. Suzuki; T. Fujii; T. Nogami; T. Hirano
Oral presentation, English, The 2005 International Chemical Congress of Pacific Basin Societies
Dec. 2005

Cyclen and Cyclam Spin-Labels Showing Magnetic Exchange Interactions Tuned by Diamagnetic Metal Ions
K. Igarashi; T. Ishida; T. Nogami
Oral presentation, English, The 2005 International Chemical Congress of Pacific Basin Societies
Dec. 2005

"tert-Butyl 2-Pyridyl Nitroxides as Paramagnetic Chelating Ligands
A. Okazawa; K. Osanai; K. Yanagi; T. Shimada; T. Nogami; T. Ishida
Oral presentation, English, The 2005 International Chemical Congress of Pacific Basin Societies
Dec. 2005

One-dimensional Copper(II) Complexes Bridged with Diazaaromatic Rings
T. Kogane; T. Nogami; T. Ishida
Oral presentation, English, The 2005 International Chemical Congress of Pacific Basin Societies
Dec. 2005

One-dimensional Complexes of Hydro Nitronyl Nitroxide and Co(hfac)2 Showing Polymorphs and Magnetic Hysteresis
N. Ishii; T. Ishida; T. Nogami
Oral presentation, English, The 2005 International Chemical Congress of Pacific Basin Societies
Dec. 2005

Rectangular Tetraterbium- and Tetradysprosium-Copper Complex Ions Behaving as Single-Molecule Magnets
S. Ueki; T. Ishida; T. Nogami; K.-Y. Choi; H. Nojiri
Oral presentation, English, The 2005 International Chemical Congress of Pacific Basin Societies
Dec. 2005

ET Salts with Lanthanide Complex Ion Showing Frequency-Dependent ac Magnetic Susceptibility
T. Ishida; S. Ueki; T. Nogami; M. Tamura
Oral presentation, English, Organic Semiconductors and Conductors: Half Century and Future Prospects
Aug. 2005

Light-Induced Magnets from Organic and Organic-Inorganic-Hybrid Approaches
Y. Morishita; T. Ishida; T. Nogami
Oral presentation, English, Inernational Symmposium on Coherent Optical Science
Jul. 2005

Effect of Staggered Field on the Magnetization Process of S = 1/2 Antiferromagnetic Chains
A. Matsuo; K. Hosokawa; Y. Narumi; K. Okunishi; N. Maeshima; T. Asano; Y. Ajiro; T. Ishida; T. Nogami; K. Kindo
Oral presentation, English, International Symposium on Quantum Spin Systems 2004 (Hayama)
Nov. 2004

超分子的に制御できる分子磁性
石田尚行; 野上 隆
Invited oral presentation, Japanese, 日本応用磁気学会学術講演会, 日本応用磁気学会, Domestic conference
Sep. 2004

3d-4f Approach to SMMs. Heterometallic Complexes Containing Oximate Bridges
F. Mori; S. Ueki; T. Ishida; T. Nogami
Oral presentation, English, International Conference on Molecule-based Magnets 2004
Aug. 2004

Magnetic Properties of Transition Metal Complexes with 2,2'-Bipyridin-4-yl t-Butyl Nitroxide
T. Ishida; T. Shimada; T. Nogami
Oral presentation, English, International Conference on Molecule-based Magnets 2004
Aug. 2004

Magnetic Coupling Switch by Means of Host-Guest Chemistry in a Crown-ether Side-arm
T. Ishida; T. Nakabayashi; T. Nogami
Oral presentation, English, International Conference on Molecule-based Magnets 2004
Aug. 2004

Structure and Magnetic Properties of 3d - 4f Hetero-metallic Complexes Containing Di-2-pyridyl Ketoximate
F. Mori; T. Ishida; T. Nogami
Oral presentation, English, International Conference on Molecule-based Magnets 2004
Aug. 2004

Short Spiral Structure of Linear Trinuclear Complexes [Ni3(pzNN)6] and [Ni3(pzIN)6]
S. Yamada; T. Ishida; T. Nogami
Oral presentation, English, International Conference on Molecule-based Magnets 2004
Aug. 2004

Structures and Magnetic Properties of Dinuclear Spiro-complexes for Orthogonality of Magnetic Orbitals
A. Okazawa; T. Ishida; T. Nogami
Oral presentation, English, International Conference on Molecule-based Magnets 2004
Aug. 2004

Structure and Magnetic Property of Honeycomb-like Complex
K. Osanai; T. Ishida; T. Nogami
Oral presentation, English, International Conference on Molecule-based Magnets 2004
Aug. 2004

Nano-sized [Ln4Cu1] complex ions containing oximato bridges (Ln = lanthanoid)
T. Ishida; S. Ueki; M. Sahlan; T. Nogami
Oral presentation, English, International Conference on Science and Technology of Synthetic Metals 2004
Jun. 2004

Rectangular Tetralanthanide Ln4Cu1 Complexes (Ln = Nd, Gd) Containing Bis(dimethylglyoximato)copper(II) as a Template in Synthesis and a Coupler in Magnetic Exchange
Y. Kobayashi; T. Ishida; T. Nogagmi
Oral presentation, English, Nano-Science of Advanced Metal Complexes
Mar. 2003

Meta-Phenylene-Bridged Bis(iminonitroxide) Biradicals as Potential High-Spin Ligands
T. Ishida; T. Ichimura; T. Nogami
Oral presentation, English, VIIIth International Conference on Molecule-Based Magnets
Oct. 2002

Host-Guest Chemistry of Radical-Copper Wheels. a Supramolecular Control of Magnetic Exchange Coupling
T. Ishida; J.-i. Omata; T. Nogami
Oral presentation, English, VIIIth International Conference on Molecule-Based Magnets
Oct. 2002

Canted Antiferromagnetism in TPM2X2: a Microscopic Study
J. Kreitlow; A. Wolter; D. Baabe; H.-H. Klauss; S. Sulow; D. Mienert; J. Litterst; R. Feyerherm; K. Doll; T. Ishida; M. A. C. de Melo; A. Amato
Oral presentation, English, VIIIth International Conference on Molecule-Based Magnets
Oct. 2002

Magnetic Structures of Transitiion Metal Complex Compounds Determined by Neutron Diffraction
R. Feyerherm; A. Loose; T. Ishida; J. Li; P. Rabu
Oral presentation, English, VIIIth International Conference on Molecule-Based Magnets
Oct. 2002

Structures and Magnetic Properties of Molecule-Based Magnetic Materials
T. Nogami; T. Ishida
Oral presentation, English, International Workshop on Modern Science and Technology 2002
Sep. 2002

Effect of Staggered Field in S = 1/2 Antiferromagnetic Chain: Copper Pyrimidine
T. Asano; D. Nomura; Y. Inagaki; Y. Ajiro; H. Nojiri; Y. Narumi; K. Kindo; T. Ishida; T. Nogami
Oral presentation, English, The 23rd International Conference on Low Temperature Physics
Aug. 2002

Preparation and Characterization of Bis(1,1,1,5,5,5-hexafluoro-2,4-pentanedionato)copper(II) Complexes with Diazanaphthalenes
T. Kogane; T. Ishida; T. Nogami
Oral presentation, English, 35th International Conference on Coordination Chemistry
Jul. 2002

Hydroiminonitroxide Complexes with Metal Hexafluoroacetylacetonates
T. Ise; T. Ishida; T. Nogami
Oral presentation, English, International Conference on Science and Technology of Synthetic Metals
Jun. 2002

Solvated Magnets of Fe[N(CN)2]2(pyrimidine): Transition Phenomena Tuned by Guests
T. Kusaka; T. Ishida; T. Nogami
Oral presentation, English, International Symposium on Cooperative Phenomena of Assembled Metal Complexes, 15-17, Nov. 2001, Osaka
Nov. 2001

Structures and Magnetic Properties of Pyrimidine-Bridged Transition-Metal Complexes
T. Nogami; T. Ishida
Oral presentation, English, The 7th Japan-China Joint Symposium on Conduction and Photo-conduction in Organic Solids and Related Phenomena
Nov. 2001

Low Temperature Deuterium NMR Studies on Magnetism of TEMPO Derivatives
G. Maruta; S. Takeda; M. Ooishi; R. Imachi; T. Ishida; T. Nogami
Oral presentation, English, The Fourth International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets
Sep. 2001

Hybrid Magnetic Solids of Radical-Substituted Heteroaromatic Compounds with Metal Halides
T. Matsuyama; Y. Iwata; J. Sata; J. Omata; T. Ishida; T. Nogami
Oral presentation, English, The Fourth International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets
Sep. 2001

Magnetic Properties of 9,9-Disubstituted 9,10-Dihydroacridine-10-yloxyls
M. Seino; Y. Akui; T. Ishida; T. Nogami
Oral presentation, English, The Fourth International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets
Sep. 2001

Single crystal studies of the 1-D systems PMCu(NO3)2(H2O)2 and MnNi(NO2)4(en)
R. Feyerherm; A. Loose; T. Ishida; T. Nogami; C. Mathoniere; O. Kahn
Oral presentation, English, Conference on the European Science Foundation Programme
Mar. 2001

Crystal and magnetic structures of FePM2Cl2, Co(ox)(bpy) and MCl2(bpy), M = Co, Ni, determined by neutron powder diffraction mid-term
A. Loose; R. Feyerherm; T. Ishida; M. A. Lawandy; J. Li
Oral presentation, English, Conference on the European Science Foundation Programme
Mar. 2001

Magnetische ordnung molekularer u¨ergangsmetallkomplexe
R. Feyerherm; A. Loose; C. Mathonie ́re; O. Kahn; T. Ishida
Oral presentation, Fru¨hjahrstagung des Arbeitskreises Festko¨rperphysik der Deutsche Physikalische Gesellschaft (Hamburg)
Mar. 2001

Magnetic-field induced gap and staggered susceptibility in the S=1/2 chain [PM.Cu(NO3)2(H2O)2]n (PM = pyrimidine)
R. Feyerherm; M. Meissner; T. Ishida
Oral presentation, Fru¨hjahrstagung des Arbeitskreises Festko¨rperphysik der Deutsche Physikalische Gesellschaft
Mar. 2001

Magnetic Properties of Some Transition-Metal Complexes
T. Nogami; T. Ishida
Oral presentation, English, The IMS COE Symposium on Electronic Properties of Molecular Assemblies - from Molecular Solid to Single Molecule -
Mar. 2001

Magnetic Properties of 9,9'(10H,10'H)-spirobiacridine-10,10'-dioxyl and Related Compounds
T. Ishida; M. Ooishi; T. Nogami
Oral presentation, English, The IMS COE Symposium on Electronic Properties of Molecular Assemblies - from Molecular Solid to Single Molecule -
Mar. 2001

Magnetic structure of Mn(dca)2(pyz-d8) and other molecular magnets
R. Feyerherm; A. Loose; P. Smeibidl; S. Raasch; D. Tu ̈bens; J. L. Manson; T. Ishida
Oral presentation, English, BENSC Experimental Reports 2001, Hahn-Meitner-Institut Berlin, Germany
2001

Synthesis and Properties of Dibenzodioxadithiafulvalene and Related Compounds
K. Tanaka; K. Mondo; T. Ishida; A. Kobayashi; T. Nogami
Oral presentation, English, The 2000 International Chemical Congress of Pacific Basin Societies
Dec. 2000

Magnetic Phase Transition of Fe(II) and Co(II) Complexes Bridged by Pyrimidine and Dicyanamide
T. Kusaka; T. Ishida; D. Hashizume; F. Iwasaki; T. Nogami
Oral presentation, English, The 2000 International Chemical Congress of Pacific Basin Societies
Dec. 2000

High-Spin Radical-Copper Macrocycles and Related Compounds
J. Omata; T. Ishida; D. Hashizume; F. Iwasaki; T. Nogami
Oral presentation, English, The 2000 International Chemical Congress of Pacific Basin Societies
Dec. 2000

Structures and Magnetic Properties of Transition-Metal Complexes
T. Nogami; T. Ishida
Oral presentation, English, International Workshop on Magnetism in Lower Dimensions 2000
Dec. 2000

Anomalous Magnetism in Organic Radical Ferromagnets 4-Arylmethyleneamino-2,2,6,6-tetramethylpiperidin-1-yloxyl just above Tc studied by mSR method
S. Ohira; T. Ise; K. Nakayama; T. Ishida; T. Nogami; I. Watanabe; K. Nagamine
Oral presentation, English, VII th International Conference on Molecule-Based Magnets (Texas)
Sep. 2000

1-Dimensional S=1 Ferromagnetic Chain Formed by a Square Ni2S2 Motif in Ni(qt)2 (qt = Quinoline-8-thiolate)
T. Miyake; T. Ishida; D. Hashizume; F. Iwasaki; T. Nogami
Oral presentation, English, VII th International Conference on Molecule-Based Magnets (Texas)
Sep. 2000

Radical-Copper Macrocycles with a Ground High-Spin State
J. Omata; T. Ishida; D. Hashizume; F. Iwasaki; T. Nogami
Oral presentation, English, VII th International Conference on Molecule-Based Magnets (Texas)
Sep. 2000

Zero-Field Muon Spin Rotation Study on TEMPO-Based Magnets, Ar-CH=N-TEMPO (Ar = 4-Biphenylyl, Phenyl, and 4-Pyridyl)
T. Ishida; S. Ohira; T. Ise; K. Nakayama; I. Watanabe; T. Nogami; K. Nagamine
Oral presentation, English, VII th International Conference on Molecule-Based Magnets (Texas)
Sep. 2000

Channel Structure Formed by High-Spin Radical Copper Wheels
T. Ishida; J. Omata; D. Hashizume; F. Iwasaki; T. Nogami
Oral presentation, English, XI th International Symposium on Supramolecular Chemistry
Jul. 2000

Muon Spin Resonance Study on Muonium and Mu-like Radical States in a TEMPO Derivative
S. Ohira; T. Ishida; T. Nogami; K. Nagamine
Oral presentation, English, KEK-MSL Report 1999
May 2000

mSR Study on Crytical Behavior of Organic Radical Magnets, 4-Arylmethyleneamino-TEMPO
S. Ohira; T. Ise; Y. Akui; T. Katayama; T. Miyake; T. Ishida; T. Nogami; I. Watanabe; K. Nagamine
Oral presentation, English, KEK-MSL Report 1999
May 2000

mSR Study on 4-Py-CH=N-TEMPO
S. Ohira; T. Ise; T. Katayama; T. Miyake; T. Ishida; T. Nogami; I. Watanabe; K. Nagamine
Oral presentation, English, KEK-MSL Report 1999
May 2000

μSR Studies on Low Dimensionality of Organic Radical Magnets (R104)
S. Ohira; I. Watanabe; F. L. Pratt; K. Nagamine; T. Ishida; T. Nogami
Oral presentation, English, RIKEN-RAL Muon Facility Reort
2000

μSR Study on Organic Radical Ferromagnets, 4-Arylmethyleneamino-TEMPO (R62)
S. Ohira; I. Watanabe; K. Nagamine; K. Nakayama; T. Ishida; T. Nogami
Oral presentation, English, RIKEN-RAL Muon Facility Reort
2000

Report
S. Ohira; T. Ishida; T. Nogami; I. Watanabe; K. Nagamine
Oral presentation, English, RIKEN Accel. Prog. Rep.
2000

Ferromagnetism and Exchange Mechanism of Organic Nitroxide Crystals
T. Ishida
Oral presentation, English, International Workshop on Magnetism in Lower Dimensions
Dec. 1999

Magnetism of Pyrimidine-Bridged Transition-Metal Complexes
K. Zusai; T. Ishida; T. Nogami
Oral presentation, English, International Symposium on Molecular Design and Assembled Metal Complexes
Nov. 1999

Magnetic Phase Transition of Py2N- and NCNH--Bridged Nickel (II) Complexes at about 25 K
K. Zusai; T. Katayama; T. Ishida; T. Nogami
Oral presentation, English, International Symposium on Molecular Design and Assembled Metal Complexes
Nov. 1999

μSR studies on critical behavior of organic radical magnet, 4-(p-chlorobenzylideneamino)- 2,2,6,6-tetramethylpiperidin-1-yloxyl
S. Ohira; I. Watanabe; K. Nakayama; T. Ishida; T. Nogami; K. Nagamine
Oral presentation, English, RIKEN Review
Nov. 1999

Muon Spin Relaxation and Resonance Studies on the Organic Radical Magnet, 4-Arylmethyleneamino-TEMPO
S. Ohira; I. Watanabe; F. L. Pratt; T. Ishida; T. Nogami; K. Nagamine
Oral presentation, English, 8th International Conference on Muon Spin Rotaion, Relaxation and Resonance
Aug. 1999

Solid-State high-Resolution 2H NMR Study of Electron Spin Density Distribution of Organic Ferromagnets
G. Maruta; S. Takeda; R. Imachi; T. Ishida; T. Nogami; K. Yamaguchi
Oral presentation, English, The 4th International Symposium on Functional Dyes -Science and Technology of Functional p-Electron Systems-
May 1999

Ferromagnetic Interaction of Organic Radicals and Pyrimidine-Bridged Transition-Metal Complexes
T. Nogami; T. Ishida
Oral presentation, English, The 4th International Symposium on Functional Dyes -Science and Technology of Functional p-Electron Systems-
May 1999

Long-range ordered state of organic radical magnets 4-Arylmethyleneamino-TEMPO
S. Ohira; T. Ishida; T. Ise; Y. Akui; T. Nogami; I. Watanabe; K. Nagamine
Oral presentation, English, KEK-MSL REPORT 1998
1999

Crystal Structures of Phenanthridine and Acridine Derivatives wiht Magnetic Interacations
M. Suzuki; D. Hashizume; M. Yasui; T. Ishida; T. Nogami; F. Iwasaki
Oral presentation, English, The 3rd Conferenece of the Asian Crystallographic Association
Oct. 1998

Intermolecular Ferromagnetic Interaction of p-Conjugated Nitroxide Radicals
T. Ishida; T. Nogami
Oral presentation, English, The 6th Japan-China Joint Symposium on Conduction and Photo-conduction in Organic Solids and Related Phenomena
Oct. 1998

Intermolecular Ferromagnetic Interaction in pai-Conjugated Nitroxide Radical Crystals
T. Ishida; Y. Akui; S.-y. Masaoka; M. Nakagawa; D. Hashizume; M. Yasui; F. Iwasaki; T. Nogami
Oral presentation, English, The VIth International Conference on Molecule-Based Magnets
Oct. 1998

Spin Density of a Ferromagnetic TEMPO Derivative
Y. Pontillon; E. Ressouche; J. Schweizer; T. Ishida; T. Nogami
Oral presentation, English, The VIth International Conference on Molecule-Based Magnets
Sep. 1998

Pressure Effects of Organic Ferromagnetic Radical p-Cl-C6H4-CH=N-TEMPO
M. Mito; T. Kawae; K. Takeda; T. Ishida; T. Nogami
Oral presentation, English, The VIth International Conference on Molecule-Based Magnets
Sep. 1998

Single Crystal Magnetic Susceptibility of 1-D [PM.Cu(NO3)2.(H2O)2]n
R. Feyerherm; T. Ishida; T. Nogami; M. Steiner
Oral presentation, English, The VIth International Conference on Molecule-Based Magnets
Sep. 1998

Magnetic Phase Transition of Copper Complexes Containing dmit or TCNQ anion
T. Ishida; Y. Kokubo; K. Nakayama; T. Nogami
Oral presentation, English, The VIth International Conference on Molecule-Based Magnets
Sep. 1998

Very Low-Temperature Heat Capacity and Magnetic Phase Transition of the Organic Ferromagnet, CMTMP
M. Sorai; Y. Miyazaki; T. Matsumoto; T. Ishida; T. Nogami
Oral presentation, English, 15th International Conference on Chemical Thermodynamics (Portugal)
Jul. 1998

μSR Study on Organic Radical Ferromagnets 4-(Arylmethyleneamino)-TEMPO
S. Ohira; I. Watanabe; K. Nakayama; T. Ishida; T. Nogami; K. Nagamine
Oral presentation, English, KEK-MSL Report 1997
1998

Crystal Structures of 4-(4-Halobenzylideneamino)-TEMPO Radicals Showing Ferromagnetic Interactions
F. Iwasaki; H. Yamamoto; H. Yoshikawa; T. Takada; H. Kannari; M. Yasui; T. Ishida; T. Nogami
Oral presentation, English, 13th International Conference on the Chemistry of the Organic Solid State (NY)
Jul. 1997

Physical Properties of ET Salts with Organic Anions
M. Luo; S. Sakakura; T. Ishida; T. Nogami
Oral presentation, English, Recent Development and Future Prospect of Molecular Based Conductors
Mar. 1997

Crystal Structures of Copper Complexes Showing Magnetic Interaction
Y. Ishikawa; M. Yasui; T. Nogami; T. Ishida; F. Iwasaki
Oral presentation, English, International Symposium 'Analysis and Design of Solid-State Organic Reactions
Sep. 1996

Crystal Structures of TEMPO Radicals Showing Magnetic Interactions
H. Yamamoto; H. Yoshikawa; M. Yasui; T. Ishida; T. Nogami; F. Iwasaki
Oral presentation, English, International Symposium 'Analysis and Design of Solid-State Organic Reactions
Sep. 1996

Crystal Structures of Copper Complexes Showing Ferromagnetic Interaction
M. Yasui; Y. Ishikawa; T. Nogami; T. Ishida; F. Iwasaki
Oral presentation, English, 17th Congress of the International Union of Crystallography (Seatle)
Aug. 1996

Crystal Structures of TEMPO Radicals Showing Ferromagnetic Interactions
H. Yamamoto; H. Yoshikawam; M. Yasui; T. Ishida; T. Nogami; F. Iwasaki
Oral presentation, English, 17th Congress of the International Union of Crystallography (Seatle)
Aug. 1996

Electrical Conductivities of MOTT Salts
T. Nogami; K. Yoshida; T. Ishida; A. Kobayashi
Oral presentation, English, International Conference on Science and Technology of Synthetic Metals
Jul. 1996

Magnetic Properties of Pyrimidine-Bridged Copper(II) Nitrate Complexes
T. Ishida; K. Nakayama; W. Saito; M. Yasui; F. Iwasaki; T. Nogami
Oral presentation, English, International Conference on Science and Technology of Synthetic Metals
Jul. 1996

Magnetic Interaction via β-Hydrogen Atoms in TEMPO Derivatives
T. Kawakami; A. Oda; S. Takeda; W. Mori; T. Ishida; T. Nogami; K. Yamaguchi
Oral presentation, English, The Vth International Conference on Molecule-Based Magnets
Jul. 1996

Solid State 1H-MAS-NMR and Spin Densities on Protons of the Organic Ferromagnetic TEMPO Derivatives
G. Maruta; S. Takeda; T. Kawakami; W. Mori; K. Yamaguchi; R. Imachi; T. Ishida; T. Nogami
Oral presentation, English, The Vth International Conference on Molecule-Based Magnets
Jul. 1996

Ferromagnetism of Organic Radical Crystals of Perdeuterated TEMPO Derivatives
R. Imachi; T. Ishida; T. Nogami; M. Yasui; F. Iwasaki; N. Takeda; M. Ishikawa
Oral presentation, English, International Conference on Science and Technology of Synthetic Metals
Jul. 1996

Magnetic Properties of Pyrimidine-Bridged Copper(II) Complexes
T. Ishida; M. Nakagawa; K. Nakayama; Y. Ishikawa; M. Yasui; F. Iwasaki; T. Nogami
Oral presentation, English, The Vth International Conference on Molecule-Based Magnets
Jul. 1996

Magnetic Properties of 4- and 5-Methylpyrimidine-Bridged Copper(II) Complexes
M. Nakagawa; Y. Ishikawa; T. Kogane; T. Ishida; M. Yasui; F. Iwasaki; T. Nogami
Oral presentation, English, Perspective in Organic-inorganic Hybrid Solids ---Molecular Design and Functionality---
Mar. 1996

Ferromagnetism of Organic Radical Crystals of TEMPO Derivatives
T. Nogami; T. Ishida; M. Yasui; F. Iwasaki; H. Iwamura; N. Takeda; M. Ishikawa
Oral presentation, English, The 1996 International Chemical Congress of Pacific Basin Societies
Dec. 1995

Ferromagnetism of Pyrimidine-Bridged Copper(II) Complexes
T. Ishida; T. Nogami; M. Yasui; F. Iwasaki; H. Iwamura; N. Takeda; M. Ishikawa
Oral presentation, English, The 1996 International Chemical Congress of Pacific Basin Societies
Dec. 1995

Crystal Structures of Copper Complexes Showing Ferromagnetic Interaction
Y. Ishikawa; M. Yasui; T. Ishida; T. Nogami; F. Iwasaki
Oral presentation, English, 2nd Conference of the Asian Crystallographic Association (Bangkok)
Nov. 1995

Crystal Structures of TEMPO Radicals Showing Ferromagnetic Interaction
H. Yamamoto; H. Yoshikawa; H. Mitsuda; K. Takada; M. Yasui; T. Ishida; T. Nogami; F. Iwasaki
Oral presentation, English, 2nd Conference of the Asian Crystallographic Association (Bangkok)
Nov. 1995

Syntheses, Crystal Structures, and Magnetic Properties of Organic Ferromagnets: A Series of Arylmethyleneamino-2,2,6,6-tetramethylpiperidin-1-oxyls and Pyrimidine-Bridged Transition-Metal Complexes
T. Nogami; T. Ishida; M. Yasui; F. Iwasaki; H. Iwamura; N. Takeda; M. Ishikawa
Oral presentation, English, Recent Progress and Future Prospects of Molecular Electronic Spectroscopy
Oct. 1995

Crystal Structures of TEMPO Radicals Showing Ferromagnetic Interaction
M. Yasui; H. Yoshikawa; H. Yamamoto; T. Ishida; T. Nogami; F. Iwasaki
Oral presentation, English, 12th International Conference on the Chemistry of the Organic Solid State
Jul. 1995

Ferromagnetism of Organic Radical Crystals of TEMPO Derivatives
T. Nogami; T. Ishida; M. Yasui; F. Iwasaki; H. Iwamura; N. Takeda; M. Ishikawa
Oral presentation, English, 12th International Conference on the Chemistry of the Organic Solid State
Jul. 1995

Ferromagnetism of Pyrimidine-Bridged Copper(II) Complexes
T. Ishida; T. Nogami; M. Yasui; F. Iwasaki; H. Iwamura; N. Takeda; M. Ishikawa
Oral presentation, English, 12th International Conference on the Chemistry of the Organic Solid State
Jul. 1995

Synthesis and Molecular Structures of New Multi-Sulfur Donor Molecules and Acceptor Molecules, and Electrical Conductivities of Their Ion-Radical Salts
T. Nogami; T. Ishida; M. Tanaka; K. Yoshida; M. Takebayashi; H. Yoshikawa; M. Yasui; F. Iwasaki
Oral presentation, English, International Symposium on Novel Electonic States in Molecular Conductors
Aug. 1994

Intra- and Inter-Molecular Ferromagnetic Interaction of Transition Metal Complexes Containing Pyrimidine or Pyrazine Derivatives
T. Ishida; S.-i. Mitsubori; N. Takeda; M. Ishikawa; H. Iwamura; T. Nogami
Oral presentation, English, International Conference on Science and Technology of Synthetic Metals
Jul. 1994

New Organic Ferromagnets: 4-Arylmethyleneamino-2,2,6,6-tetramethylpiperidin-1-oxyl (Aryl = Phenyl, 4-Biphenyl)
T. Nogami; K. Togashi; H. Tsuboi; T. Ishida; H. Yoshikawa; M. Yasui; F. Iwasaki; H. Iwamura; N. Takeda; M. Ishikawa
Oral presentation, English, International Conference on Science and Technology of Synthetic Metals
Jul. 1994

Molecular Ferromagnet(1). Magnetic Properties of VO･Pyrimidine and Cu･Quinazoline Complexes
T. Ishida; T. Nogami; S.-i. Mitsubori; H. Iwamura; N. Takeda; M. Ishikawa
Oral presentation, Japanese, Summer Symposium on Functional Materials
Jul. 1994

Molecular Ferromagnet(1). Crystal Structures and Magnetic Properties of TEMPO radicals Coneected with Various Aromatic Rings through an Azomethine Linkage
T. Nogami; T. Ishida; H. Yoshikawa; M. Yasui; F. Iwasaki; H. Iwamura; N. Takeda; M. Ishikawa
Oral presentation, Japanese, Summer Symposium on Functional Materials
Jul. 1994

Synthesis and Characterization of C60 Adducts with Benzyne, Dichlorocarbene, Dienes, and Oxygen
T. Nogami; M. Tsuda; T. Ishida; S. Kurono; M. Ohashi
Oral presentation, English, The 3rd IUMRS International Conference on Advanced Materials
Jun. 1993

Approaches from High-Spin Organic Molecules to Organic Ferromagnets
T. Ishida; K. Inoue; N. Koga; N. Nakamura; H. Iwamura
Oral presentation, English, Matrials Research Society Symposium
Nov. 1992

Intermolecular Ferromagnetic Interaction of 4-(1-Pyrenylmethyleneamino)-2,2,6,6- tetramethylpiperidin-1-oxyl and Magnetic Interaction of Transition Metal Ions in Complexes Containing Pyrimidine or Pyrazine as a Bridging Ligand
T. Ishida; S.-I. Mitsubori; K. Tomioka; T. Nogami; H. Iwamura; K. Yamaguchi; W. Mori; Y. Shirota
Oral presentation, English, International Symposium on Chemistry and Physics of Molecular Based Magnetic Materials
Oct. 1992

Synthesis of Multi-Sulfur TTF Derivatives and Cunducting Organic Salts
T. Nogami; T. Ishida; H. Yoshikawa; M. Tanaka; T. Naito; H. Kobayashi; A. Kobayashi
Oral presentation, English, International Conference on Science and Technology of Synthetic Metals
Aug. 1992

Attempted Syntheses of Dibenzotetraoxafulvalene
T. Ishida; Y. Ishihara; T. Yamaga; T. Nogami
Oral presentation, English, International Conference on Science and Technology of Synthetic Metals
Aug. 1992

Syntheses, Second-Order NLO properties, and Crystal Structures of Tetrasubstituted Ethylene, Trisubstituted Schiff-Base, and Diphenoxymethane Derivatives
T. Ishida; H. Osaka; T. Nogami; R. Yamazaki; M. Yasui; F. Iwasaki; A. Mizoguchi; M. Kuhata; T. Uemiya; A. Nishimura
Oral presentation, English, International Conference on Science and Technology of Synthetic Metals
Aug. 1992

Design of Organic Ferromagnets Based on High-Spin Poly(phenylacetylenes) Having Radical Centers on the Side Chains
H. Iwamura; N. Koga; T. Ishida
Oral presentation, English, The 1989 International Chemical Congress of Pacific Basin Societies
Dec. 1989

Synthesis and Properties of Poly(ethynylphenyl Nitroxide) Derivatives
T. Ishida; H. Iwamura
Oral presentation, English, The 1989 International Chemical Congress of Pacific Basin Societies
Dec. 1989

Unusually Facile Cleavage of S-Cα Bond in Highly Sterically Crowded Sulfoxides
T. Ishida; R. Okazaki; N. Inamoto
Oral presentation, English, First International Conference on Heteroatom Chemistry
Jul. 1987

実践的先進機器分析
Apr. 2020 - Present
電気通信大学

化学概論第一
Apr. 2018 - Present
電気通信大学

化学生命工学演習第二
Apr. 2018 - Present
電気通信大学

化学生命工学実験第二
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電気通信大学

化学生命工学演習第一
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電気通信大学

無機化学
Apr. 2012 - Present
電気通信大学

固体物性化学特論
Apr. 2009 - Present
The University of Electro-Communications

現代化学
Apr. 2001 - Present
電気通信大学

基礎科学実験B2
Apr. 2021 - Mar. 2025

基礎科学実験B1
Apr. 2021 - Mar. 2025

大学院技術英語
Apr. 2021 - Mar. 2025
電気通信大学

特論B（集中講義）
Dec. 2024 - Dec. 2024
京都大学大学院工学研究科

化学概論
Apr. 2014 - Mar. 2016
The University of Electro-Communications

キャリア教育演習
2012

物質・生命情報工学実験B
2011

電子物性工学
2011

無機物質工学
2011

無機物質化学特論
2010

物質・生命情報工学実験B
2010

電子物性工学
2010

無機物質工学
2010

Practical advanced instrumental analysis
The University of Electro-Communications

Graduate Technical English
The University of Electro-Communications

Inorganic Chemistry
The University of Electro-Communications

General Chemistry
The University of Electro-Communications

Advanced Solid State Chemistry
The University of Electro-Communications

Exercises in Chemistry and Biotechnology II
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Chemistry and Biotechnology Laboratory II
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Exercises in Chemistry and Biotechnology I
The University of Electro-Communications

Principles of Chemistry Ⅰ
The University of Electro-Communications

Chemistry Laboratory
The University of Electro-Communications

無機化学（III類）
The University of Electro-Communications

創成物理化学特別講義2
大阪市立大院理学系研究科

創成物理化学特別講義2
大阪市立大院理学系研究科

無機化学（III類）
The University of Electro-Communications

無機化学（III類）
電気通信大学

無機化学（生体機能システムコース）
The University of Electro-Communications

無機化学（生体機能システムコース）
電気通信大学

生体機能システム演習第二
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固体物性化学特論
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生体機能システム演習第二
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化学概論
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特別講義無機化学特論Ａ
神戸大院理学研究科

特別講義無機化学特論Ａ
神戸大院理学研究科

生体機能システム実験第二
The University of Electro-Communications

物質工学演習B
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有機物質工学第二
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大学院総合コミュニケーション科学
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生体機能システム演習第一
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固体化学特論
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量子・物質工学実験A
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物質材料科学A
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基礎科学実験B
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大学院総合コミュニケーション科学
The University of Electro-Communications

大学院総合コミュニケーション科学
電気通信大学

生体機能システム実験第二
The University of Electro-Communications

生体機能システム実験第二
電気通信大学

現代化学
The University of Electro-Communications

物質工学演習B
The University of Electro-Communications

物質工学演習B
電気通信大学

有機物質工学第二
The University of Electro-Communications

有機物質工学第二
電気通信大学

生体機能システム演習第一
The University of Electro-Communications

生体機能システム演習第一
電気通信大学

固体化学特論
The University of Electro-Communications

固体化学特論
電気通信大学

量子・物質工学実験A
The University of Electro-Communications

量子・物質工学実験A
電気通信大学

物質材料科学A
The University of Electro-Communications

物質材料科学A
電気通信大学

無機化学
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基礎科学実験B
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基礎科学実験B
電気通信大学

The Fullerenes Research Society

錯体化学会

Society of Muon and Meson Science of Japan

The Society of Electron Spin Science and Technology

Japan Society for Molecular Science

JSAP M&BE

American Chemical Society

The Chemical Society of Japan

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希土類有機ラジカルフレームワーク（RERF）と室温動作機能性磁石の創製
石田尚行
01 Aug. 2020 - 31 Mar. 2022

単分子磁石自動集積による高保磁力高ブロッキング温度複合磁性材料の創製
石田尚行
泉科学技術振興財団, 研究助成, Principal investigator
01 Oct. 2019 - 30 Sep. 2021

ポリマー関係学術相談
石田尚行
私企業, 学術相談, Principal investigator
01 Jul. 2018 - 31 Mar. 2019

希土類錯体の常磁性・反磁性配位子による発光性能と磁石性能のスイッチ
石田尚行
池谷科学技術振興財団, 研究助成, Principal investigator
01 Apr. 2018 - 31 Mar. 2019

僅かな分子の構造変調が劇的なスピン状態変化をもたらす材料群の研究
石田尚行
Principal investigator
2015 - 2018

エンジン関係共同研究
石田尚行
私企業, 研究助成, Principal investigator
01 Jul. 2013 - 31 Mar. 2014

エンジン関係共同研究
石田尚行
私企業, 研究助成, Principal investigator
2012 - 2013

複合スピン機能と柔軟な有機機能を併せ持つ超分子的磁性体の合成開発とその評価
2010 - 2013

エンジン関係依頼測定
石田尚行
私企業, 研究助成, Principal investigator
2012 - 2012

へテロスピン系の特異な結合を利用した材料群の創出と構造相転移物質への展開
2011 - 2012

4f-3d-2pへテロスピン系の交換相互作用を利用した電子物性材料の創出
2009 - 2010

ナノサイズ情報記録材料を目指した希土類金属イオンを含む単分子磁石および単一次元鎖磁石の開発
石田
カシオ
2009 - 2009

低次元構造をもちながら世界最高の保磁力を持つ分子性磁性体の研究
石田
日本証券
2009 - 2009

複合機能性材料を目指した超分子磁性体の開発
2007 - 2009

Development of Single-molecule Magnets and Related Molecule-based Magents
NOGAMI Takashi; ISHIDA Takayuki
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, The University of Electro-Communications, Grant-in-Aid for Scientific Research (C), Single-molecule magnets (SMMs) and single-chain magnets (SCMs) attract much attention in materials chemistry. We have exploited potential utility of the bridging paramagnetic ligands (HIN, HNN, CnPNN). A strong character of SCM is operative in the magnetically ordered state in the one-dimensional Co-C4PNN complex, giving a largest class of the coercive field (52 kOe or 4.1 MA m-1 at 6 K). Several oligonuclear 3d-4f heterometallic complexes have been characterized as ground ferrimagnetic high-spin molecules. Lanthanide ions are supposed to be promising candidates for the elements of single-molecule magnets (SMMs) because of the large magnetic momentum and anisotropy. We have established the [Dy2Cu], [Dy4Cu], and [Dy2Cu2] complexes as new SMMs and [Dy2Cu2]n as a SCM. A plausible mechanism for quantum tunneling of magnetization has been proposed for the first time among the 3d-4f heterometallic SMMs and SCMs. The 3d-4f exchange magnetic couplings were precisely evaluated by means of high-frequency EPR spectroscopy. Another subject of the present research is multi-functional molecule-based magnets. Supramolecular techniques have been used to tune or control molecule-based magnetic materials. We have developed nano-porous magnetic materials, whose magnetic properties were changed by inclusion of small diamagnetic molecules. Switchable magnets by means of host-guest chemistry have been developed. Host-guest complexes of tri- and tetra-radical-substituted azamacrocycles afforded the folded structures of the hosts where the radical oxygen atoms were coordinated to the guest metal ion, leading to enhanced antiferromagnetic couplings in the solid state and an ESR line broadening in the solution phase., 17550166
2005 - 2007

多様な積層構造をもつフタロシアニンπ-d系導電体の構築
稲辺 保; 野上 隆; 石田 尚行; 内藤 俊雄
日本学術振興会, 科学研究費助成事業, 北海道大学, 特定領域研究, 本特定領域研究期間に以下の研究成果が得られた。 フタロシアニン(Pc)一次元π-d系:TPP[Fe(Pc)(CN)_2]_2の負の磁気抵抗を20Kで37Tまで測定し、2桁以上の抵抗低下を見出した。電気、磁気物性が軸配位子によって変化することを見出し、π-πおよびπ-d相互作用への軸配位子置換効果について実験および理論計算によって系統的に調べ、可変なπ-d系となることを見出した。一次元系での電荷の局在が不純物とは無関係であることを見出し、電荷の不均化が確認された。電流-電圧特性の測定により不均化の融解による非線形性が観測され、π-d系ではより高温から非線形性が顕著になり、電場によっても抵抗が激減することが見出された。 Pc二次元π-d系:[PXX]_2[Co(Pc)(CN)_2]・CH_3CNが等方的な二次元系であることを見出した。この結晶は半導体であるが、加圧によって金属的となる。二次元π-d系の構築にも成功し、低温ではπ-d相互作用に基づく明確な物性の差が現れることを見出した。 新規π-d(f)系の開拓:ピリミジン-TTF-M系(π-d系)を構築し、常磁性半導体が見いだされた。いくつかの4f-3d系単分子磁石を開発し、4f-3d間交換相互作用、量子トンネル効果の機構を明らかにした。天然有機分子の電子ドナー性を見出し、その電荷移動錯体、遷移金属錯体における電導性や磁性を評価した。希土類錯イオンを対アニオンとするイオンラジカル塩の電導性、単分子磁石性能を評価した。ラジカル-コバルト系(π-d系)単一次元鎖磁石から世界最高の保磁力(52kOe)を有する「硬い」磁性材料を開発した。 光照射を利用した電荷移動錯体の電気特性の制御:DCNQI銀塩を対象に、単結晶のデバイス化を目指し、接合子構造となる、局所的に伝導性が異なる“単結晶"への変換を試み、特異な光応答についての知見を得た。, 15073101
2003 - 2007

超分子アーキテクチャ－を利用した複合機能性分子磁性材料の開発
2004 - 2006

Synthesis, Structures, Physical Properties, and Functions of Magnetic Materials
NOGAMI Takashi; ISHIDA Takayuki
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, The University of Electro-Communications, Grant-in-Aid for Scientific Research (C), Supramolecular techniques such as host-guest complex formation have been used to tune molecule-based magnetic materials. We have developed several magnetic materials possessing nano-sized pores or cavities, whose magnetic properties were changed by inclusion of small diamagnetic molecules. Some magnetic materials exhibited photo-induced magnetism. We also developed single-molecule magnets containing 3d-and 4f-metal ions. Several results from this project are listed below : 1)Weak ferromagnet possessing a chiral lattice was prepared and their magnetic structure was characterized by means of polarized neutron diffraction study. 2)Photo-induced magnetism was found in [M(pm)(N_3)_2](M=Mn,Fe,Co,Ni). 3)Diamagnetic-ion inclusion was applied for the magnetic coupling switch in the nickel(II) complex having a polyether side-arm. 4)Crown-ether spin label reagents were developed. 5)Honeycomb-like porous compound [Cu(4APM)(OCH_3)(NO_3)] was prepared and the crystal structure was solved in a relatively rare space group R-3. 6)The high-spin ground state was characterized for the hybrid metal-radical solid [Ni(4ImNNH)_2(NO_3)_2]. 7)The lanthanide-containing complexes [DyCuDy],[Dy_4Cu], and [Tb_4Cu] behaved as single-molecule magnets., 15550115
2003 - 2004

磁気応答型イオンセンサーの開発
石田 尚行
(財)材料科学研究助成基金, 研究助成, Principal investigator
2003 - 2004

分子磁性の超分子的制御
2001 - 2003

高い磁気転移温度をもつ分子性強磁性体の開発
野上 隆; 石田 尚行; 岩崎 不二子
日本学術振興会, 科学研究費助成事業, 電気通信大学, 特定領域研究(B), メタ配位子であるピリミジン(PM)とV(IV)Oとの錯体の構造を磁性を調べた。その結果、V(IV)の磁性軌道であるt_<2g>とPMのπ軌道との共役により、スピン分極機構でメタ位のV(IV)スピン間に強磁性的相互作用が働くことがわかった。4位にニトロニルニトロキシドを結合させたPMとCuX_2(X=Cl,Br)との錯体は6角形の6量体を形成し、直径11Å程度の空洞を作る。この空洞に種々の分子を導入すると、水素結合により空洞方向の強磁性的相互作用が強まることを見つけた。4,6-ジメチルPMとCuBr_2との錯体ではらせん構造が形成され、単結晶ではキラルな構造を示す。磁性は1次元反強磁性鎖モデルで解析できる。PM誘導体やピラジン誘導体とMn(II), Co(II), Ni(II)との錯体の構造と磁性の関係を調べた。これらの系ではσ結合を介した反強磁性的相互作用とπ結合を介した強磁性的相互作用が共存し、後者の寄与のほうが大きかった。PM-M[N(CN)_2]_2-G型錯体(M=Fe(II), Co(II) ; G=各種脂肪族アルコール)は、10K以下で弱強磁性体転移を示した。最小のラジカル配位子であるイミノニトロキシド(IN)とCu(II), Cd(II)との錯体の合成に成功し、磁性と構造との関係を調べた。Cd錯体は2量化により700K以上の強い反強磁性的相互作用を示した。TEMPO系有機ラジカル強磁性体のμSR,比熱測定から磁気的相互作用を明らかにした。スピロ結合で結ばれたアクリジンジニトロキシドの合成に成功し、構造と磁性を調べた。メタ位にINを有するジラジカル分子の基底状態は、第3の置換基の種類によって1重項にも3重項にもなりうることを見つけた。導電性錯体を与える新規ドナー分子を目指して、分子内に酸素とセレンを有するフルバレン誘導体の合成に成功した。, 11224204
1999 - 2001

安定な芳香族置換ニトロキシド類を用いた高Tc磁性体や磁性導体の開発
石田 尚行
日本学術振興会, 科学研究費助成事業, 電気通信大学, 特定領域研究(A), 本研究は、高い転移温度を有する分子性磁性体や、磁性と関連した複合材料の開発が主眼である。芳香族置換基を有するニトロキシドラジカルを、有機ラジカル系強磁性体の構築のために用いた。また、複素芳香族置換基を遷移金属錯体の配位子として用いた。 純粋な有機化合物からなる磁性体の構築のために、ジフェニルニトロキシドラジカル類の磁性体への応用を検討したところ、分子間で強磁性的相互作用を与える系が比較的多いことがわかった。そのような背景からスピロビアクリジン-N,N'-ジオキシルを設計し、合成した。 ピリミジン架橋(PM)を用いた錯体の分子性磁性体の開発を進めた。アニオンにも磁気カップラーとして機能させる目的で、π共役系1価アニオンであるN(CN)_2^-を導入した。PM・M[N(CN)_2]_2(M=Fe,Co,Ni)の結晶構造は同形であり、磁気測定によれば、転移温度はそれぞれ3.2,1.8,8.4Kであった。前の二者は弱強磁性挙動を示した。 ラジカル置換基としてニトロニルニトロキシド(NN)を選び、それを4位あるいは5位に有するPM架橋の利用を検討した。[4PMNN・CuX_2]_6(X=Cl,Br)は、12スピン系大員環状の分子構造を有し、結晶中ではカラムを形成する。チューブ状空間にゲスト分子を取り込ませたところ、強磁性的相互作用が増大した。すなわち、分子磁性をホスト-ゲスト化学などにより超分子的に制御する可能性が示された。複素環としてピラジンを用いたもののなかにも、磁気的に興味深い物質が得られた。, 12020219
2000 - 2000

高い磁気的転移温度をもつ共役有機ラジカル系とその遷移金属錯体の開発
2000 - 2000

パイ共役架橋配位子の利用に基づく分子性強磁性金属を目指した遷移金属錯体の開発
1999 - 1999

高い強磁性体転移温度をもつ共役有機ラジカル系の開発
野上 隆; 石田 尚行
日本学術振興会, 科学研究費助成事業, 電気通信大学, 特定領域研究(A), 1 π共役有機NOラジカルの分子間強磁性的相互作用 各種π共役安定有機NOラジカルを合成し、磁気測定を行った結果、強磁性的相互作用を示す系をいくつか見つけた。π共役骨格としてはアクリジン、フェナンスレン、ベンズイミダゾール等を用いた。結晶構造解析結果をもとに強磁性的相互作用の原因を調べた結果、2種類の相互作用を見つけた。1つはMcConnellモデルによるものであり、π電子系の重なりでは、分子間で最近接原子同士は反平行のスピンを誘起しあうという原理に基づく。もう1つは、ある分子のSOMOが隣原子のSOMOと直交していることに基づく。またアルキル基を有するビス(ジフェニル)ニトロキシドは、アルキル基が長くなるにつれて強磁性的相互作用が強くなった。分子間アルキル鎖同士のファスナー効果が原因と思われる。 2 TEMPO系強磁性体の強磁性的相互作用 TEMPO系強磁性体ではNOラジカル部位は2次元ジグザグ面を形成し、面内の磁気的相互作用は既に解明された。面間相互作用に関して、偏極中性子回折およびμSR測定などから、面間に存在するフェニル環同士の重なりによる磁気的相互作用の伝達経路を明らかにした。 3 ピリミジン・遷移金属錯体の磁性 メタ配位子であるピリミジン(PM)とCu(II)、Co(II)などの錯体を各種合成し、構造と磁性の関係を調べた。その結果、PMの2つの窒素上での配位が、axial/equatorial配位の時は強磁性的相互作用が、equatorial/equatorial配位の時は反強磁性的相互作用が働くことを明らかにした。これは隣同士の磁性軌道が重なりをもつか直交するかに起因する。また、PM_2CoX_2(X=Cl,Br)はキラルな結晶構造をもち、5Kで弱強磁性体に転移した。, 10146217
1998 - 1998

安定有機ラジカルや遷移金属錯体を用いた分子性強磁性体の開発に関する研究
1997 - 1998

安定有機ラジカルを用いた分子性強磁性体の開発に関する研究
1996 - 1996

多数の硫黄原子を有するTTF誘導体の合成と錯体の電導性
野上 隆; 石田 尚行
日本学術振興会, 科学研究費助成事業, 電気通信大学, 重点領域研究, 4、5-メチレンジチオ-4'、5'-(2-オキサトリメチレンジチオ)TTF(略してMOTT)錯体を電解結晶法で合成し、電気伝導度の温度変化を測定した。その結果、XF_6塩(X=P、As、Sb、Nb、Ta)で金属伝導性を示したが、すべての系で22-45Kの範囲で半導体に転移した。(MOTT)_2AsF_6錯体の伝導度の圧力効果を測定した結果、低温部での金属・半導体転移は6kbarの圧力で完全に消失したが、超伝導は観測されなかった。金属・半導体転移はこれらの錯体の低次元性に由来すると思われるが、このことは、錯体の結晶構造解析に基づいたバンド計算からも確かめられた。N、N-ジメチルアミノTTFはTTFよりも更に強いドナー分子であることが期待され、それを用いた錯体の伝導性や磁性に興味がもたれる。我々はリチオTTFに対する求電子反応でその分子の合成に成功した。BEDT-TTFのように、多数の硫黄原子を有するTTF誘導体を含む錯体は、2次元錯体を与え、超伝導に有利であることが知られている。そこで我々は、リチオTTF同士を求電子反応を用いて硫黄で橋渡しする簡便な方法を見つけた。従来の合成方法が多段階合成であるのに対して、本方法は1ポット合成である点に意義がある。従来の伝導性錯体のほとんどは、1、3-テトラチアフルバレンおよびその誘導体をベースにしている。1、2-テトラチアフルバレン(略して1、2-TTF)誘導体も興味あるドナー分子である。我々はジベンゾ-1、2-TTFとBEDT-1、2-TTFの合成を試み、成功には至っていないが、1、2-ジチオール環をアジン結合で結んだ新規物質の合成に至っている。, 07232217
1995 - 1995

フラーレンの化学反応と電子材料への応用
野上 隆; 石田 尚行
日本学術振興会, 科学研究費助成事業, 電気通信大学, 重点領域研究, 4、5-ジメトキシベンザインとC60との{2+2}環化付加体の結晶構造解析に成功した・フラーレン{2+2}付加体の結晶構造解析では最初の例である。C60の付加部分でのC-C結合が、1.645Åと異常に長い等の興味深い知見が得られた。安定ラジカルとして有名なTEMPOラジカルをC60に付加させた分子を合成した。この分子は分子性磁性体としても、フラーレンを有するスピンラベル分子としても興味が持たれる。SQUID測定から、この分子自体は弱い反強磁性相互作用を示すことがわかった。電子写真の分野における電子輸送剤として、C60に各種ジアルキルカルベン1分子が付加した物質の電子輸送能を検討した。これらはC60の5、6付加体を6、6付加体の混合物である。C60分子中にアルキル基を導入することで、基盤ポリマーへの相溶性が向上した。Time of Flight法による電子移動度の測定から、電子移動度が大きいことで注目されているC60よりも、1.6倍程度大きい電子移動度をもつ物質も見つけた。優れた電子輸送剤は、有害なオゾンの発生を伴わない電子写真の開発を可能ならしめるので、各方面から切望されている。クロロベンゼン中、アンモニア水存在下でC60と脂肪族アルデヒド、およびベンジルアルデヒドとの反応を調べた。その結果、前者では、マススペクトル、2次元NMR、元素分析等から、C60の6、6位で2、5-ジアルキルシクロブチルアミン環を形成する生成物を与えることがわかった。後者では、C60の6、6位で、ベンジル基と水素がラジカル付加したと思われる生成物を与えた。これらの反応はC60の新規反応として興味がもたれ、将来のC60を用いた新素材開発にとって有用であると思われる。, 07213211
1995 - 1995

分子間強磁性的相互作用の発現および有機強磁性体の開発に関する研究
1995 - 1995

高スピン有機分子とそれを用いた分子系、及び有機強磁性体の開発
石田 尚行
西田記念基礎有機化学研究助成基金, 研究助成, Principal investigator
1994 - 1995

多数の硫黄原子を有するTTF誘導体の合成と錯体の電導性
野上 隆; 石田 尚行
日本学術振興会, 科学研究費助成事業, 電気通信大学, 重点領域研究, メチレンジチオ(2-オキサトリメチレンジチオ)テトラチアフルバレンを成分とするイオンラジカル塩結晶を電気化学的方法で合成した。錯体中のアニオン部には、種々の無機の直線アニオン、正八面体アニオン、正四面体アニオンを用いた。直線アニオンおよび正四面体アニオンの場合は半導体であった。八面体アニオンPF_6^-、AsF_6^-、SbF_6^-、NbF_6^-、TaF_6^-の場合はすべて、高温部で金属的挙動を示し、低温部(22-68K)で非金属に転移した。PF_6^-とAsF_6^-塩の結晶構造は、共にβ型であった。Extended Huckel分子軌道をベースにした強結合近似によるバンド計算では、擬一次元的なフェルミ面を与えた。圧力をかけた状態での伝導度の温度変化を測定するため、圧力セルを作製した。AsF_6^-塩では、7.9kbarの圧力下では上記の非金属転移は抑えられて、2.5Kまで金属状態を維持した。また、これらの実験結果を以前我々が行なった類似ドナー分子、エチレンジチオ(2-オキサトリメチレンジチオ)テトラチアフルバレンのイオンラジカル塩の伝導性と比較した。多数の硫黄原子を有する新規ドナー分子をめざして、ビス(エチレンジチオ)チエノチオフェンとビス(エチレンジチオ)チエノジチインを合成した。1分子中に、前者は6個の、また後者は7個の硫黄原子を有する。それらの分子構造をX線結晶構造解析により決定した。導伝性錯体の開発をめざして、TCNQとDCNQIの部分構造をあわせ持ったアクセプター分子であるN、7、7-トリシアノキノメタンイミンの合成法を確立した。, 06243213
1994 - 1994

フラーレンの化学反応と電子材料への応用
野上 隆; 石田 尚行
日本学術振興会, 科学研究費助成事業, 電気通信大学, 重点領域研究, C_<60>の付加反応を調べた。C_<60>とメタクロロ過安息香酸との反応で、C_<60>に酸素原子が付加することを見いだした。酸素2付加体を単離し、その^<13>C-NMRスペクトルから、生成物はCs対称性をもつことを明らかにした。これには3つの候補がある。C_<60>とo-ジメトキシベンザインとの1:1付加体の単結晶を作成し、結晶構造解析を行なった。ベンザインはC_<60>の6員環・6員環縮合部分に付加して、シクロブタン環を形成することを証明した。付加したC_<60>部分のC-C結合距離は1.645Åと異常に長いことがわかった。この研究はC_<60>の2+2環化付加反応生成物の結晶構造解析の最初の成功例である。C_<60>誘導体のスピンラベル分子としての応用、あるいは磁性への展開を念頭に置いて、C_<60>に2、2、6、6-テトラメチルピペリジン-1-オキシルラジカル(TEMPO)が付加した分子を合成した。1:1付加体をマルチ付加体から単離し、各種スペクトルから推定した結果、この分子はC_<60>の5員環・6員環縮合部分に付加し、もとの結合は開いていることがわかった。この分子のCVを測定した結果、還元電位はC_<60>にほぼ近く、C_<60>部分の共役が維持されていることを示した。酸化電位はTEMPOそのものより若干大きく、C_<60>の電子吸引性によると思われる。C_<60>の各種ジハロカルベン1:1付加体を単離し、各種のマススペクトル(FAB、ESI、MALDI、LD)を測定した。フラグメンテーションはLD、FAB、MALDIの順番に大きかったが、ESI法では親イオンピークのみ観測された。LDMSではオリゴマー化がおこり、C_<2n>(2n=122〜132と184〜196)のシグナルが観測された。, 06224209
1994 - 1994

分子間強磁性的相互作用の発現および有機強磁性体の開発に関する研究
1994 - 1994

フラーレンの化学反応と電子材料への応用
野上 隆; 石田 尚行
日本学術振興会, 科学研究費助成事業, 電気通信大学, 重点領域研究, C_<60>の化学を明らかにする研究の一環として、種々の反応試薬との反応を行ない、生成物の単離、スペクトルによる同定を行なった。C_<60>の反応性を明らかにすると同時に、付加体の構造と反応機構、付加体の反応性と官能基変換、および電気化学的な性質などを調べた。 具体的には、我々はまず種々のジエン試薬との付加体を単離し、構造を明らかにした。特にC_<60>のアントラセン二分子付加体が両極より付加した構造を持つことを^<13>CNMRより明らかにすることができた。これは二分子付加体の構造を決めた初めての例である。また、過酸酸化によるジオキシドC_<60>O_2も位置選択性の高い生成物であることが解かった。さらに、我々は“真の"カルベン、ニトレン付加を行なった。即ち、形式的にはカルベンやニトレン付加に相当する付加体が、ジアゾ、アジド化合物との反応により開いた構造をもつ付加体として得られるとの報告があるのに対し、我々の行なった直接的なカルベンやニトレン付加では閉じた6員環-6員環接合部における付加体を与えた。ジクロロカルベン付加体からの官能基変換を検討したが、求核試薬はC_<60>部分にも攻撃するためかなり困難であった。ナイトレン付加により得られたフラーレンアジリジンは新規骨格である。この類縁体はアジド蟻酸エステルを用いても得られた。アジリジン類は熱的に安定であり、閉じた6員環-6員環接合部位の付加体は安定な異性体と考えられる。アジリジン類の還元電位を調べたところ、窒素上の置換基によりかなり影響を受けることが解かった。温度を変えた^<13>CNMR測定により、このアジリジン骨格には窒素の反転が観察され、この反転のエネルギー障壁も窒素上の置換基にかなり左右されることが解かった。, 05233213
1993 - 1993

高スピン有機分子、有機強磁性体の開発
野上 隆; 石田 尚行
日本学術振興会, 科学研究費助成事業, 電気通信大学, 重点領域研究, 平成五年度の最も注目すべき成果として、完全に有機物よりなる強磁性体を3種、錯体よりなる分子性強磁性体を2種見い出したことが挙げられる。特に、単一の有機ラジカル結晶の強磁性体は従来2種が知られているのみであったが、本研究で見い出された物質は史上第三、四、五番目のものである。 我々は芳香族環とアゾメチンで結合したTEMPOラジカル誘導体で、強磁性的相互作用を有するものを見出した。測定を行なった21種のTEMPO誘導体類のうち7種が強磁性的相互作用を示したが、この誘導体の系は従来の常識に反してその性質を示す確率が極めて高い。それらのヘリウム希釈冷凍機の温度領域での交流磁化率、磁化曲線の測定を行なった。その結果、芳香族としてフェニル、ビフェニル、p-クロロフェニルのものがそれぞれ0.18,0.4,0.4Kで強磁性転移を起こし、2-ナフチルのものが0.12Kで反強磁性転移を起こすことが解かった。また、幾つかのものについては室温におけるX線結晶構造解析を行なった。前二者の構造解析によれば、このN-O部分は二次元ネットワークを形成している。 別のアプローチとして、スピン源として遷移金属イオンを用い芳香族環としてピリミジンで架橋配位させ、d軌道上のスピンを平行にすることを試みた。ピリミジン誘導体を架橋配位子とするバナジルニ核錯体は、全ての場合に分子内強磁性的相互作用を示した、つまり基底三重項であった。分子内における交換パラメーターは1.1〜2.7Kであった。無置換配位子の場合は、分子間においても強磁性的相互作用が働いており、これは140mKで強磁性体に相転移することが解かった。分子間の強磁性的相互作用はキナゾリンの銅錯体でも見られ、これも極低温の測定により強磁性体転移することが解かった。, 05226213
1993 - 1993

新規な高スピン有機分子と、分子間強磁性的相互作用の発現に関する研究
1993 - 1993

高スピン有機分子,有機強磁性体の開発
野上 隆; 石田 尚行
日本学術振興会, 科学研究費助成事業, 電気通信大学, 重点領域研究, TEMPOラジカルとアゾメチン結合で結合した各種芳香族化合物を合成し、磁化率の温度変化を測定した。その中で、芳香族化合物部がピレン、ナフタリン、ベンゼンの系でワイス温度がそれぞれ、0.7K、0.5K、0.73Kの強磁性的相互作用を示した。ナフタリンの系では4.2Kと1.7Kで磁化の磁場強度依存性を調べ、低温ほどスピン量子数が大きくなることが判った。この系では更に0.45Kまで交流磁化率を測定したが、磁気モーメントは温度低下に伴って急激に増加する一方で、これよりも低温度で強磁性体になることが期待される。芳香族化合物部分がピレンの系では、反強磁性的相互作用も共存した。また、これらのラジカル化合物とDDQやトリアミノベンゼン誘導体とのCT錯体を合成したが、いずれも常磁性体であった。芳香環のメタ位に結合したラジカル間には強磁性的相互作用が働くのに対し、オルトまたはパラ位に結合したラジカル間には反強磁性的相互作用が働く。この規則がスピン源に遷移金属を用いた時に成り立つか否かを確かめるため、ピリミジン、あるいはピラジン誘導体を配位子として用い、これと遷移金属ヘキサフルオロアセチルアセトナートとの2核錯体を各種合成したが、いずれも反強磁性的相互作用を示した。安定ラジカルと結合したドナーまたはアクセプター分子を成分とするCT錯体が強磁性的相互作用を示す可能性があるとの我々が提出したモデルに基ずき、TTFにニトロキシドラジカルが2個π共役で結合した分子の合成に成功し、ESRスペクトルがジラジカル構造を確認した。また、C_3対称性を有する安定な基底三重項分子の合成を目指して、トリフェニルメタン型分子にニトロキシドラジカルが2個結合した分子を合成し、ESRスペクトルでジラジカル構造を確認した。, 04242208
1992 - 1992

機能性有機電子材料の合成と物性,構造
野上 隆; 石田 尚行
日本学術振興会, 科学研究費助成事業, 電気通信大学, 重点領域研究, TEMPOラジカルとアゾメチン結合で結合した各種芳香族化合物を合成し、磁化率の温度変化を測定した。その中で、芳香族化合物部分がピレン、ナフタリン、ベンゼンの系でワイス温度がそれぞれ、0.7K、0.5K、0.73Kの強磁性的相互作用を示した。ナフタリンの系では4.2Kと1.7Kで磁化の磁場強度依存性を調べ、低温ほどスピン量子数が大きくなることが判った。この系では更に0.45Kまで交流磁化率を測定したが、磁気モーメントは温度低下に伴った急激に増加する一方で、これよりも低温部で強磁性体になることが期待される。ピリミジン、あるいはピラジン誘導体を配位子として用い、これと遷移金属2核錯体を各種合成したが、いずれも反強磁性的相互作用を示した。TTFにニトロキシドラジカルが2個π共役で結合した分子の合成に成功し、ESRスペクトルでジラジカル構造を確認した。また安定な基底三重項分子の合成を目指して、トリフェニルメタン型分子にニトロキシドラジカルが2個結合した分子を合成し、ESRスペクトルでジラジカル構造を確認した。C_<60>とベンザイン、各種ジエンが付加反応することを見いだした。生成物をHPLCで分離し、NMR、マススペクトルで同定した。また、C_<60>に対するジクロルカルベンの付加反応、mCPBAによる酸素付加反応も検討した。半導体レーザーの倍波発生用を目指して、エチレンの4個の水素をドナーおよびアクセプター性置換基で置換した分子や、2個の芳香環がΛ型に結合した分子を各種合成し、粉末法によるSHG測定、EFISH法によるβ値を測定した。その結果、青色領域に透明なSHG活性物質をいくつか見いだし、それらの結晶構造解析も行った。多数の硫黄原子を有する新規ドナー分子を目指して、1分子中に6個および7個の硫黄を有する多環共役分子の合成に成功し、結晶構造解析を行った。, 04205050
1992 - 1992

機能性有機電子材料の合成と物性,構造
野上 隆; 石田 尚行
日本学術振興会, 科学研究費助成事業, 電気通信大学, 重点領域研究, 次の3つのテ-マについて研究した。1.高電導性有機錯体の合成と物性;2.有機非線形光学材料;3.有機磁性体。1については1分子中に多数の硫黄原子を有するTTF誘導体と,それを用いた電導性錯体の開発を行なった。この種の錯体は高温部で金属であっても,低温部で絶縁体に転移する系が多い。本研究でもその傾向が見られたが,BEDTーTTF_3Br_2とBEDTーTTFーC(CN)_3ーCu CN系が4.2Kまで金属状態を維持することを見い出した。前者については結晶構造解析を行なった。また4員環であるジチエテ同士が2重結合で結合した構造を基本骨格にもち,1分子中に6個の硫黄を有する略称BETを合成した。TTF系が7π系であるのに対して,BETは5π系の新しい型のドナ-分子である。2に関しては半導体レ-ザ-の倍波発生用の2次の非線形光学材料の合成を行った。エチレンは最小の共役系なので,この4つの水素をドナ-およびアクセプタ-置換基で置換えた物質系は,吸収端が短波長であり,当初の目的に有望であると考えた。一連の分子内電荷移動系の合成を行なった結果,4種類の系について青色透過性があり,宜つSHG活性であることを見い出した。またSHG活性の系については結晶造解析を行った。3については有機強磁性体を目指しているいくつかのアプロ-チから合成を行なった。ベンゼン環のメタ位に置換したカルベンの電子スピンは互いに平行であることを参考にして、ピリミジン骨格の窒素にスピン源である遷移金属が配位した錯体を合成した。C_<60>のLUMが3重に縮重しているため,LUMOに複数個の電子が入った系は高スピン状態になると考えられる。K^+ークリプタンド,あるいはK^+ー18ークラウンー6をカチオン部にもち,アニオン部がC_<60>である錯体を合体した。現在磁気的測定を定ないつつある。, 03205047
1991 - 1991

Synthesis of New Organic Donor Molecules and Highly Conducting Organic Complexes
NOGAMI Takashi; ISHIDA Takayuki
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, The University of Electro-Communications, Grant-in-Aid for General Scientific Research (C), (1)Highly Conducting Organic Complexes Crystal structure has a pronounced effect on the electrical properties of conducting organic salts. In order to investigate the effect of the slight modification of the donor site on the crystal and band electronic structures and electrical conductivities, we compared the crystal and band electronic structures of BEDT-TTF_2PF_6, EVT_2PF_6, and VT_2PF_6. We found that the replacement of the two ethylene groups of BEDT-TTF by vinylene group results in the change from two-dimensional band structure of BEDT-TTF salt to pseudo one-dimensional band structure of VT salt. In order to obtain new conducting organic salts, we synthesized several transition metal-dmio salts and TTF derivatives possesing sulti-sulfur. atons in the soJLecule. We also synthesized conducting salts containing the latter TTF derivatives by an electrochemical method. Some of the EOTT salts exhibited. metallic conductivities down to 4.2 K. (2)Non-Linear Optical Materials Crystallographic analysis was made for the seeond-order non-linear optical material possessing 1, 3-dithiole ring as a donor site and eyano and ester groups as the acceptor sites. We also found several SHG active materials for the ethylene derivatives, in which four, hydrogen atoms were su4stituted by dqw and acceptor substituents. These materials are transparent inLt#e, blue y#veleaft rwon, and can be used as frequency doublers of infrared semiconductor lasers., 02640344
1990 - 1991

新規なフラーレンＣ６０誘導体及びその製法
Patent right, 特願平7-178883, Date applied: 14 Jul. 1995, 川隅 正則、伊東 孝之、野上 隆、石田 尚行, 特開平9-25246, Date announced: 28 Jan. 1997

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総合的な探求の時間（出張講義）
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01 Nov. 2023

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Appearance, 電気通信大学, Lecture
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第64回電子スピンサイエンス学会年会（SEST2025）
Academic society etc, Planning etc, 電子スピンサイエンス学会, 21 Nov. 2025 - 23 Nov. 2025