TAKAHASHI Kazuyuki(Graduate School of Science / Division of Chemistry)

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TAKAHASHI Kazuyuki
Graduate School of Science / Division of Chemistry
Associate Professor

Researcher basic information

■ Research Keyword

Functional molecular materials

Electronic properties

Phase transition

Intermolecular interaction

■ Research Areas

Nanotechnology/Materials / Functional solid-state chemistry

Nanotechnology/Materials / Inorganic and coordination chemistry

Nanotechnology/Materials / Structural/physical organic chemistry

Research activity information

■ Award

Oct. 2020 日本化学会, 優秀ポスター発表賞（第10回CSJフェスタ2020）, 八面体型アニオンを持つ鉄(II)錯体におけるスピンクロスオーバー誘起構造転移
東亮介
Japan society

Oct. 2019 Graduate School of Science, Kobe University, Poster Presentation Award, アニオンのサイズ形状による鉄(II)スピンクロスオーバー錯体の磁気挙動の変化
Ryosuke Azuma

Dec. 2018 神戸大学研究基盤センター, 神戸大学研究基盤センター若手フロンティア研究会ポスター賞「極低温部門賞」, 配位能を持つアクセプターからなる錯体の構造と性質
杉谷真歩, TAKAHASHI KAZUYUKI
Japan society

Dec. 2014 神戸大学研究基盤センター, 優秀賞（神戸大学研究基盤センター若手フロンティア研究会2014）, 磁性アニオンを含有した鉄(II)錯体の構造と磁気物性
岡井光信, TAKAHASHI KAZUYUKI
Japan society

Sep. 2014 分子科学会, 優秀ポスター賞（第8回分子科学討論会2014 ）, プロトンドナー性配位子を用いた鉄(II)錯体の構造と物性
加藤佑, TAKAHASHI KAZUYUKI
Japan society

■ Paper

Synthesis and structural characterization of the racemic and meso forms of 2,2′′-dibromo-1,1′′-biferrocenes and their mixed-valence salts
Ryo Horikoshi, Ryota Inoue, Ryo Sumitani, Kazuyuki Takahashi, Tomoyuki Mochida
The racemic and meso forms of 2,2′′-dibromo-1,1′′-biferrocene were prepared via the coupling of 1-bromo-2-lithioferrocene, and they were structurally characterized.
Royal Society of Chemistry (RSC), Mar. 2025, CrystEngComm, 27(15) (15), 2371 - 2381, English, International magazine
[Refereed]
Scientific journal

The Relationship between Spin Crossover (SCO) Behaviors, Cation and Ligand Motions, and Intermolecular Interactions in a Series of Anionic SCO Fe(III) Complexes with Halogen-Substituted Azobisphenolate Ligands
Mai Hirota, Suguru Murata, Takahiro Sakurai, Hitoshi Ohta, Kazuyuki Takahashi
To investigate the halogen substitution effect on the anionic spin crossover (SCO) complexes, azobisphenolate ligands with 5,5′-dihalogen substituents from fluorine to iodine were synthesized, and their anionic FeIII complexes 1F, 1Cl, 1Br, and 1I were isolated. The temperature dependence of magnetic susceptibility and crystal structure revealed that 1F, 1Cl, and 1Br are all isostructural and exhibit SCO with the rotational motion of the cation and ligands, whereas 1I shows incomplete SCO. Note that 1Cl and 1Br showed irreversible and reversible cooperative SCO transitions, respectively. Short intermolecular contacts between the FeIII complex anions were found despite Coulomb repulsions for all the complexes. The topological analysis of the electron density distributions revealed the existence of X···X halogen bonds, C–H···X, C–H···N, and C–H···O hydrogen bonds, and C–H···π interactions are evident. The dimensionality of intermolecular interactions is suggested to be responsible for the cooperative SCO transitions in 1Cl and 1Br, whereas the disorder due to the freezing of ligand rotations in 1Cl is revealed to inhibit the SCO cooperativity.
MDPI AG, Nov. 2024, Molecules, 29(22) (22), 5473 - 5473, English, International magazine
[Refereed][Invited]
Scientific journal
Link to Kobe Univ. Repository (Kernel)

Direct observation of photoinduced sequential spin transition in a halogen-bonded hybrid system by complementary ultrafast optical and electron probes
Yifeng Jiang, Stuart Hayes, Simon Bittmann, Antoine Sarracini, Lai Chung Liu, Henrike M. Müller-Werkmeister, Atsuhiro Miyawaki, Masaki Hada, Shinnosuke Nakano, Ryoya Takahashi, Samiran Banu, Shin-ya Koshihara, Kazuyuki Takahashi, Tadahiko Ishikawa, R. J. Dwayne Miller
Abstract A detailed understanding of the ultrafast dynamics of halogen-bonded materials is desired for designing supramolecular materials and tuning various electronic properties by external stimuli. Here, a prototypical halogen-bonded multifunctional material containing spin crossover (SCO) cations and paramagnetic radical anions is studied as a model system of photo-switchable SCO hybrid systems using ultrafast electron diffraction and two complementary optical spectroscopic techniques. Our results reveal a sequential dynamics from SCO to radical dimer softening, uncovering a key transient intermediate state. In combination with quantum chemistry calculations, we demonstrate the presence of halogen bonds in the low- and high-temperature phases and propose their role during the photoinduced sequential dynamics, underscoring the significance of exploring ultrafast dynamics. Our research highlights the promising utility of halogen bonds in finely tuning functional properties across diverse photoactive multifunctional materials.
Corresponding, Springer Science and Business Media LLC, Jun. 2024, Nature Communications, 15(1) (1), 4604, English, International magazine, Co-authored internationally
[Refereed]
Scientific journal
Link to Kobe Univ. Repository (Kernel)

Photoisomerization of “Partially Embedded Dihydropyridazine” with a Helical Structure
Kazuteru Usui, Ami Amano, Kasumi Murayama, Miho Sasaya, Ryota Kusumoto, Tomohiro Umeno, Satsuki Murase, Naoko Iizuka, Shota Matsumoto, Yasufumi Fuchi, Kazuyuki Takahashi, Masatoshi Kawahata, Yasuhiro Kobori, Satoru Karasawa
Herein, we report the synthesis of two “partiallyembedded fused‐dihydropyridazine N‐aryl aza[5]helicene derivatives” (PDH) and the demonstration of their intrinsic photo‐triggered multi‐functional properties based on a Kekulé biradical structure. Introducing bulky electron‐withdrawing trifluoromethyl or pentafluoroethyl groups into the aza[5]helicene framework (PDH‐CF3 and ‐C2F5) gives PDH axial chirality based on the helicity of the P and M forms, even at room temperature. Upon photo‐irradiation of PDH‐CF3 in a frozen solution, an ESR signal from the triplet biradical with zero‐field splitting values, generated by N–N bond dissociation, was observed. However, when the irradiation was turned off, the ESR signal became silent, indicating the existence of two equilibriums, between the biradical and quinoidal forms based on the Kekulé structure, and between N–N bond cleavage and recombination. The observed photo‐ and thermally induced behaviors indicate that T‐type photochromic molecules are involved in the photoisomerization mechanism involving the two equilibriums. Inspired by the photoisomerization, chirality control of PDH by photoracemization was achieved. Multiple functionalities, such as T‐type photochromism, photo‐excitation‐mediated triplet biradical formation, and photoracemization, which are attributed to the “partiallyembedded dihydropyridazine” structure, are demonstrated.
Wiley, Aug. 2023, Chemistry – A European Journal, 29(62) (62), e202302413, English, International magazine
[Refereed]
Scientific journal

Pressure Effect of Spin Gap Substance Cu₂(C₅H₁₂N₂)₂Cl₄
Takahiro Sakurai, Ryosuke Takehara, Naoki Nagasawa, Hideyuki Takahashi, Makoto Saga, Kazuyuki Takahashi, Susumu Okubo, Hitoshi Ohta
Journal of the Physical Society of Japan, May 2023, JPS Conference Proceedings, 38, 011145, English, Domestic magazine
[Refereed]
International conference proceedings
Link to Kobe Univ. Repository (Kernel)

Molecular Structures and Redox Properties of Homoleptic Aluminum(III) Complexes with Azobisphenolate (azp) Ligands
Kazuyuki Takahashi, Takumi Noguchi, Keiji Ueda, Atsuhiro Miyawaki, Suguru Murata
To elucidate the oxidation behavior of the 2,2′-azobisphenolate (azp) ligand, a series of homoleptic 1:2 AlIII complexes of four azp derivatives (L1) with 5,5′-dichloro-, 5,5′-dimethyl-, 5,5′-di-t-butyl-, 3,3′,5,5′-tetramethyl-substituents and of one imino derivative (L2) were synthesized and obtained as TPP[Al(L)2]·solvent (TPP = tetraphenylphosphonium ion). The X-ray crystal structure analyses showed that the two ONO-tridentate ligands were meridionally coordinated to a central AlIII ion in an almost perpendicular manner to give a homoleptic octahedral coordination structure in all the AlIII complexes. The proton nuclear magnetic resonance spectra suggested that all the AlIII complexes retained the homoleptic coordination structure in solution. From the cyclic voltammetry measurements in dichloromethane solutions, all the AlIII complexes with the azp ligands showed two partially reversible oxidation waves, and an additional reversible or partially reversible reduction wave. The substitution effects on the first oxidation and reduction peak potentials were revealed in the AlIII complexes with the azp ligands. On the other hand, the imino complex showed a partially reversible oxidation wave accompanying a film deposition. The density functional theory (DFT) calculations indicated that the molecular orbital (MO) coefficients of the frontier MOs in the AlIII complexes were present on the ligands and were absent on the AlIII ion. These results confirmed that the azp ligands are susceptible to oxidation and can give a relatively stable oxidation species depending upon substituent effects.
MDPI AG, Jun. 2022, Inorganics, 10(6) (6), 84 - (15 pages), English, International magazine
[Refereed]
Scientific journal
Link to Kobe Univ. Repository (Kernel)

Spin-Crossover-Triggered Linkage Isomerization by the Pedal-like Motion of the Azobenzene Ligand in a Neutral Heteroleptic Iron(III) Complex
Atsuhiro Miyawaki, Kazuo Eda, Tomoyuki Mochida, Takahiro Sakurai, Hitoshi Ohta, Takahito Nakajima, Kazuyuki Takahashi
American Chemical Society (ACS), Sep. 2021, Inorganic Chemistry, 60(17) (17), 12735 - 12739, English, International magazine
[Refereed]
Scientific journal
Link to Kobe Univ. Repository (Kernel)

The Impact of the Next-Nearest Neighbor Dispersion Interactions on Spin Crossover Transition Enthalpy Evidenced by Experimental and Computational Analyses of Neutral π-Extended Heteroleptic Fe(III) Complexes
Atsuhiro Miyawaki, Tomoyuki Mochida, Takahiro Sakurai, Hitoshi Ohta, Kazuyuki Takahashi
American Chemical Society (ACS), Sep. 2020, Inorganic Chemistry, 59(17) (17), 12295 - 12303, English, International magazine
[Refereed]
Scientific journal
Link to Kobe Univ. Repository (Kernel)

Proximity coupling of superconducting nanograins with fractal distributions
Takashi Uchino, Nanami Teramachi, Ryosuke Matsuzaki, Emi Tsushima, Shusuke Fujii, Yusuke Seto, Kazuyuki Takahashi, Takao Mori, Yutaka Adachi, Yukihito Nagashima, Yoshifumi Sakaguchi, Kazuki Ohishi, Akihiro Koda, Takahiro Sakurai, Hitoshi Ohta
Jan. 2020, Physical Review B, 101(3) (3), 035146, English, International magazine
[Refereed]
Scientific journal
Link to Kobe Univ. Repository (Kernel)

Ligand mixed-valence and electrical conductivity in coordination complexes containing a redox-active phenalenol-substituted ligand
Sarah Dale, Nico M. Bonanno, Mark Pelaccia, Alan J. Lough, Atsuhiro Miyawaki, Kazuyuki Takahashi, Martin T. Lemaire
Jun. 2019, Dalton Trans., 48(23) (23), 8053 - 8056, English
[Refereed]
Scientific journal

High-Temperature Cooperative Spin Crossover Transitions and Single-Crystal Reflection Spectra of [FeIII(qsal)2](CH3OSO3) and Related Compounds
Kazuyuki Takahashi, Kaoru Yamamoto, Takashi Yamamoto, Yasuaki Einaga, Yoshihito Shiota, Kazunari Yoshizawa, Hatsumi Mori
Feb. 2019, Crystals, 9(2) (2), 81 (22 pages), English
[Refereed][Invited]
Scientific journal
Link to Kobe Univ. Repository (Kernel)

Dynamics of Water Molecules in a 3-Fold Interpenetrated Hydrogen-Bonded Organic Framework Based on Tetrakis(4-pyridyl)methane
Daisuke Inokuchi, Yasukazu Hirao, Kazuyuki Takahashi, Kouzou Matsumoto, Hatsumi Mori, Takashi Kubo
American Chemical Society (ACS), Feb. 2019, J. Phys. Chem. C, 123(11) (11), 6599–6606 - 6606, English
[Refereed]
Scientific journal

Paramagnetic organometallic ionic liquids exhibiting thermochromism based on monomer-dimer equilibrium of cationic half-sandwich complexes
Takashi Inagaki, Tomoyuki Mochida, Kazuyuki Takahashi, Takahiro Sakurai, Hitoshi Ohta
Nov. 2018, Journal of Molecular Liquids, 269((2018)) ((2018)), 882–885, English
[Refereed]
Scientific journal
Link to Kobe Univ. Repository (Kernel)

Photogeneration of Microporous Amorphous Coordination Polymers from Organometallic Ionic Liquids
Takahiro Ueda, Takumi Tominaga, Tomoyuki Mochida, Kazuyuki Takahashi, Seiji Kimura
Jul. 2018, Chem. Eur. J., 24, 9490 - 9493, English
[Refereed]
Scientific journal
Link to Kobe Univ. Repository (Kernel)

Spin-Crossover Complexes
TAKAHASHI KAZUYUKI
MDPI Multidisciplinary Digital Publishing Institute, Mar. 2018, Inorganics, 6(1) (1), 32 (4 pages), English
[Refereed][Invited]
Scientific journal
Link to Kobe Univ. Repository (Kernel)

Paramagnetic ionic plastic crystals containing the octamethylferrocenium cation: counteranion dependence of phase transitions and crystal structures
T. Mochida, M. Ishida, T. Tominaga, K. Takahashi, T. Sakurai, H. Ohta
Royal Society of Chemistry, Feb. 2018, Phys. Chem. Chem. Phys., 20(5) (5), 3019 - 3028, English
[Refereed]
Scientific journal
Link to Kobe Univ. Repository (Kernel)

Contribution of Coulomb Interactions to a Two-step Crystal Structure Phase Transformation Coupled with a Significant Change in Spin Crossover Behavior for a Series of Charged FeII Complexes from 2,6-bis(2-methylthiazol-4-yl)pyridine
Kazuyuki Takahashi, Mitsunobu Okai, Tomoyuki Mochida, Takahiro Sakurai, Hitoshi Ohta, Takashi Yamamoto, Yasuaki Einaga, Yoshihito Shiota, Kazunari Yoshizawa, Hisashi Konaka, Akito Sasaki
American Chemical Society, Feb. 2018, Inorg. Chem., 57(3) (3), 1277 - 1287, English
[Refereed]
Scientific journal
Link to Kobe Univ. Repository (Kernel)

Development of Novel Functional Molecular Crystals by Utilizing Dynamic Hydrogen Bonds
UEDA AKIRA, YOSHIDA JUNYA, TAKAHASHI KAZUYUKI, MORI HATSUMI
Oct. 2017, Journal of Synthetic Organic Chemistry, Japan, 75(10) (10), 1045 - 1054, Japanese
[Refereed]
Scientific journal

Spin-singlet transition in the magnetic hybrid compound from a spin-crossover Fe(III) cation and π-radical anion
TAKAHASHI KAZUYUKI, Takahiro Sakurai, Wei-Min Zhang, Susumu Okubo, Hitoshi Ohta, Takashi Yamamoto, Yasuaki Einaga, Hatsumi Mori
MDPI Multidisciplinary Digital Publishing Institute, Aug. 2017, Inorganics, 5(3) (3), 54 (14 pages), English
[Refereed]
Scientific journal
Link to Kobe Univ. Repository (Kernel)

Cooperative spin-crossover transition from three-dimensional purely π-stacking interactions in a neutral heteroleptic azobisphenolate FeIII complex with a N3O3 coordination sphere
Suguru Murata, TAKAHASHI KAZUYUKI, Tomoyuki Mochida, Takahiro Sakurai, Hitoshi Ohta, Takashi Yamamoto, Yasuaki Einaga
Corresponding, May 2017, Dalton Trans., 46(18) (18), 5786 - 5789, English
[Refereed]
Scientific journal
Link to Kobe Univ. Repository (Kernel)

Single-crystal-to-single-crystal transformation in hydrogen-bond-induced high-spin pseudopolymorphs from protonated cation salts with a π-extended spin crossover Fe(III) complex
Suguru Murata, Kazuyuki Takahashi, Tomoyuki Mochida, Takahiro Sakurai, Hitoshi Ohta, Takashi Yamamoto, Yasuaki Einaga
Corresponding, Elsevier Ltd, 2017, Polyhedron, 136, 170 - 175, English
[Refereed]
Scientific journal
Link to Kobe Univ. Repository (Kernel)

Thermochromic Magnetic Ionic Liquids from Cationic Nickel(II) Complexes Exhibiting Intramolecular Coordination Equilibrium
X. Lan, T. Mochida, Y. Funasako, K. Takahashi, T. Sakurai, H. Ohta
Jan. 2017, Chemistry - A European Journal, 23(4) (4), 823–831 - 831, English
[Refereed]
Scientific journal
Link to Kobe Univ. Repository (Kernel)

Directional Electron Transfer in Crystals of [CrCo] Dinuclear Complexes Achieved by Chirality-assisted Preparative Method
KANEGAWA Shinji, SHIOTA Yoshihito, KANG Soonchul, TAKAHASHI Kazuyuki, OKAJIMA Hajime, SAKAMOTO Akira, IWATA Tatsuya, KANDORI Hideki, YOSHIZAWA Kazunari, SATO Osamu
Oct. 2016, J. Am. Chem. Soc., 138(43) (43), 14170 - 14173, English
[Refereed]
Scientific journal

Above Room Temperature Organic Ferroelectrics: Diprotonated 1,4-Diazabicyclo[2.2.2]octane Shifts Between Two 2-Chlorobenzoates
YAO Zi-Shuo, YAMAMOTO Kaoru, CAI Hong-Ling, TAKAHASHI Kazuyuki, SATO Osamu
Aug. 2016, J. Am. Chem. Soc., 138(37) (37), 12005 - 12008, English
[Refereed]
Scientific journal

Coherent interface structures and intergrain Josephson coupling in dense MgO/Mg2Si/MgB2 nanocomposites
Katsuya Ueno, Yukihito Nagashima, Yusuke Seto, Megumi Matsumoto, Takahiro Sakurai, Hitoshi Ohta, Kazuyuki Takahashi, Takashi Uchino
Jul. 2016, J. Appl. Phys., 120(1) (1), 10, English
[Refereed]
Scientific journal
Link to Kobe Univ. Repository (Kernel)

The Role of Coulomb Interactions for Spin Crossover Behaviors and Crystal Structural Transformation in Novel Anionic Fe(III) Complexes from a π-Extended ONO Ligand
Suguru Murata, Kazuyuki Takahashi, Takahiro Sakurai, Hitoshi Ohta, Takashi Yamamoto, Yasuaki Einaga, Yoshihito Shiota, Kazunari Yoshizawa
Corresponding, May 2016, Crystals, 6(5) (5), 49 (16 pages), English
[Refereed][Invited]
Scientific journal
Link to Kobe Univ. Repository (Kernel)

A New Family of Anionic FeIII Spin Crossover Complexes Featuring a Weak-field N2O4 Coordination Octahedron
TAKAHASHI Kazuyuki, KAWAMUKAI Kiko, OKAI Mitsunibu, MOCHIDA Tomoyuki, SAKURAI Takahiro, OHTA Hitoshi, YAMAMOTO Takashi, EINAGA Yasuaki, SHIOTA Yoshihito, YOSHIZAWA Kazunari
Jan. 2016, Chem. Eur. J., 22(4) (4), 1257 - 1257, English
[Refereed]
Scientific journal

Organometallic ionic liwuids from half-sandwich Ru(II) complexes with various chelating ligands
Takashi Inagaki, Ken-ichi Abe, KAZUYUKI TAKAHASHI, MOCHIDA TOMOYUKI
Nov. 2015, Inorganica Chimica Acta, 438, 112 - 117, English
[Refereed]
Scientific journal

Synthesis of racemic and chiral BEDT-TTF derivatives possessing hydroxy groups and their achiral and chiral charge transfer complexes
KRIVICKAS Sara, HASHIMOTO Chiho, YOSHIDA Junya, UEDA Akira, TAKAHASHI Kazuyuki, WALLIS John, MORI Hatsumi
Sep. 2015, Beilstein J. Org. Chem., 11(Sept) (Sept), 1561 - 1569, English
[Refereed]
Scientific journal

Novel Fe(II) spin crossover complexes involving a chalcogen-bond and pai-stacking interactions with a paramagnetic and nonmagnetic M(dmit)2 anion (M = Ni, Au; dmit = 4,5-dithiolato-1,3-dithiole-2- thione)
OKAI Mitsunibu, TAKAHASHI Kazuyuki, SAKURAI Takahiro, OHTA Hitoshi, YAMAMOTO Takashi, EINAGA Yasuaki
Corresponding, Aug. 2015, J. Mater. Chem. C, 3(30) (30), 7858 - 7864, English
[Refereed][Invited]
Scientific journal

New Tris- and Pentakis-fused Donors Containing Extended Tetrathiafulvalenes: New Positive Electrode Materials for Rechargeable Batteries
IWAMOTO Shintaro, INATOMI Yuu, OGI Daisuke, SHIBAYAMA Satoshi, MURAKAMI Yukiko, KATO Minami, TAKAHASHI Kazuyuki, TANAKA Kazuyoshi, HOJO Nobuhiko, MISAKI Yohji
Jul. 2015, Beilstein J. Org. Chem., 11(July) (July), 1147, English
[Refereed]
Scientific journal

Antiferromagnetic Transition in a Novel Star-Shaped High Spin Fe(III) Tetranuclear Cluster from a Mononuclear Coordination Anion Featuring π-Extended Schiff Base Ligands
Kazuyuki Takahashi, Kiko Kawamukai, Tomoyuki Mochida, Takahiro Sakurai, Hitoshi Ohta, Takashi Yamamoto, Yasuaki Einaga, Hatsumi Mori, Yasuyuki Shimura, Toshiro Sakakibara, Takumi Fujisawa, Akira Yamaguchi, Akihiko Sumiyama
Mar. 2015, Chem. Lett., 44(6) (6), 840 - 842, English
[Refereed]
Scientific journal

16pCG-5 Possible Ideal S=1/2 Heisenberg Ferromagnet for Natural Mineral Cavansite
Okubo S., Kitahara Y., Mori Y., Hara S., Sakurai T., Takahashi K., Ohta H.
The Physical Society of Japan (JPS), 2015, Meeting Abstracts of the Physical Society of Japan, 70, 805 - 805, Japanese

A biferrocenium salt containing paramagnetic tetracyanoquinodimethane hexamers: charge disproportionation via donor–acceptor interactions
Tomoyuki Mochida, Yusuke Funasako, Kazuyuki Takahashi, Makoto Inokuchi, Takahiro Sakurai, Shohei Ikeda, Hitoshi Ohta, Hatsumi Mori, Mikio Uruichi
Nov. 2014, Chemical Communications, 50(87) (87), 13372 - 13372, English
[Refereed]
Scientific journal
Link to Kobe Univ. Repository (Kernel)

Molecular motor-driven abrupt anisotropic shape change in a single crystal of a Ni complex
Zi-Shuo Yao, Masaki Mito, Takashi Kamachi, Yoshihito Shiota, Kazunari Yoshizawa, Nobuaki Azuma, Yuji Miyazaki, Kazuyuki Takahashi, Kuirun Zhang, Takumi Nakanishi, Soonchul Kang, Shinji Kanegawa, Osamu Sato
Oct. 2014, Nat. Chem., 6(12) (12), 1079 - 1083, English
[Refereed]
Scientific journal

Gapless quantum spin liquid in an organic spin-1/2 triangular-lattice κ-H3(Cat-EDT-TTF)2.
Isono T, Kamo H, Ueda A, Takahashi K, Kimata M, Tajima H, Tsuchiya S, Terashima T, Uji S, Mori H
May 2014, Physical review letters, 112(17) (17), 1 - 177201, English
[Refereed]
Scientific journal

Gapless Quantum Spin Liquid in an Organic Spin-1/2 Triangular-Lattice κ- H3(Cat-EDT-TTF)2
Takayuki Isono, Hiromichi Kamo, Akira Ueda, Kazuyuki Takahashi, Motoi Kimata, Hiroyuki Tajima, Satoshi Tsuchiya, Taichi Terashima, Shinya Uji, Hatsumi Mori
Apr. 2014, Phys. Rev. Lett., 112(17) (17), English
[Refereed]
Scientific journal

Synergistic Spin Transition between Spin Crossover and Spin-Peierls-like Singlet Formation in the Halogen-Bonded Molecular Hybrid System: [Fe(Iqsal)2][Ni(dmit)2]·CH3CN·H2O
Kappei Fukuroi, Kazuyuki Takahashi, Tomoyuki Mochida, Takahiro Sakurai, Hitoshi Ohta, Takashi Yamamoto, Yasuaki Einaga, Hatsumi Mori
Corresponding, Feb. 2014, Angew. Chem. Int. Ed., 53(7) (7), 1983 - 1986, English
[Refereed]
Scientific journal

Reversible iodine absorption of nonporous coordination polymer Cu(TCNQ)
K. Miyao, A. Funabiki, TAKAHASHI KAZUYUKI, MOCHIDA TOMOYUKI, M. Uruichi
Feb. 2014, New J. Chem., 38(2) (2), 739 - 743, English
[Refereed]
Scientific journal
Link to Kobe Univ. Repository (Kernel)

Optical Study of a Novel Phase Transition from Dimer-Mott to Charge-Order Insulator.
Ryuji Okazaki, Yukio Yasui, Ichiro Terasaki, Yuka Ikemoto, Taro Moriwaki, Takahisa Shikama, Kazuyuki Takahashi, Hatsumi Mori, Hideki Nakaya, Takahiko Sasaki
2014, JPS conf. Proc., 3, 013010-1 - 013010-6, English
[Refereed]
International conference proceedings

Preparation of the nanoribbons of blue potassium molybdenum bronze
Takamasa Nishida, EDA KAZUO, Kazuyuki Takahashi, Takahiro Sakurai, Hitoshi Ohta, M. Stanley Whittingham
Dec. 2013, Chemistry Letters, 42(12) (12), 1514 - 1516, English
Scientific journal

Optical Conductivity Measurement of a Dimer Mott-Insulator to Charge-Order Phase Transition in a Two-Dimensional Quarter-Filled Organic Salt Compound
Ryuji Okazaki, Yuka Ikemoto, Taro Moriwaki, Takahisa Shikama, Kazuyuki Takahashi, Hatsumi Mori, Hideki Nakaya, Takahiko Sasaki, Yukio Yasui, Ichiro Terasaki
Nov. 2013, Phys. Rev. Lett., 111(21) (21), 1 - 217801, English
[Refereed]
Scientific journal

A spin-crossover ionic liquid from the cationic iron(III) Schiff base complex
M. Okuhata, Y. Funasako, TAKAHASHI KAZUYUKI, MOCHIDA TOMOYUKI
Royal Society of Chemistry, Sep. 2013, Chem. Commun., 49(69) (69), 7662 - 7664, English
[Refereed]
Scientific journal
Link to Kobe Univ. Repository (Kernel)

A less common spin-crossover process observed in the six-coordinated model heme complexes
Yoshiki Ohgo, Masashi Takahashi, Saburo Neya, Mikio Nakamura, Kazuyuki Takahashi, Yukiko Namatame, Hisashi Konaka, Hatsumi Mori, Daisuke Hashizume
Feb. 2013, Polyhedron, 66, 60 - 64, English
[Refereed]
Scientific journal

Hydrogen bond-promoted metallic state in a purely organic single-component conductor under pressure
Takayuki Isono, Hiromichi Kamo, Akira Ueda, Kazuyuki Takahashi, Akiko Nakao, Reiji Kumai, Hironori Nakao, Kensuke Kobayashi, Youichi Murakami, Hatsumi Mori
Jan. 2013, Nat. Commun., 4, English
[Refereed]
Scientific journal

Inside Cover: Vapochromic Ionic Liquids from Metal-Chelate Complexes Exhibiting Reversible Changes in Color, Thermal, and Magnetic Properties (Chem. Eur. J. 38/2012)
Yusuke Funasako, Tomoyuki Mochida, Kazuyuki Takahashi, Toshihiro Sakurai, Hitoshi Ohta
Wiley, Sep. 2012, Chemistry - A European Journal, 18(38) (38), 11842 - 11842
Scientific journal

Vapochromic Ionic Liquids from Metal–Chelate Complexes Exhibiting Reversible Changes in Color, Thermal, and Magnetic Properties
Yusuke Funasako, Tomoyuki Mochida, Kazuyuki Takahashi, Takahiro Sakurai, Hitoshi Ohta
Sep. 2012, Chem. Eur. J., 18(38) (38), 11929 - 11936, English
[Refereed]
Scientific journal

Reversible iodine absorption by alkali-TCNQ salts with associated changes in physical properties
Akira Funabiki, Tomoyuki Mochida, Kazuyuki Takahashi, Hatsumi Mori, Takahiro Sakurai, Hitoshi Ohta, Mikio Uruichi
May 2012, J. Mater. Chem., 22(17) (17), 8361 - 8366, English
[Refereed]
Scientific journal
Link to Kobe Univ. Repository (Kernel)

Manipulation of the heme electronic structure by external stimuli and ligand field
Yoshiki Ohgo, Masashi Takahashi, TAKAHASHI Kazuyuki, Yukiko Namatame, Hisashi Konaka, Hatsumi Mori, Saburo Neya, Shinya Hayami, Daisuke Hashizume, Mikio Nakamura
Mar. 2012, Hyperfine Interact., 206(1-3) (1-3), 23 - 33, English
[Refereed]
Scientific journal

Cooperative spin transition and thermally quenched high-spin state in new polymorph of [Fe(qsal)2]I3
TAKAHASHI Kazuyuki, T. Sato, H. Mori, H. Tajima, Y. Einaga, O. Sato
Mar. 2012, Hyperfine Interact., 206(1-3) (1-3), 1 - 5, English
[Refereed]
Scientific journal

Synthesis and properties of catechol-fused tetrathiafulvalene derivatives and their hydrogen-bonded conductive charge-transfer salts
Hiromichi Kamo, Akira Ueda, Takayuki Isono, Kazuyuki Takahashi, Hatsumi Mori
2012, Tetrahedron Lett., 53(33) (33), 4385 - 4388, English
[Refereed]
Scientific journal

Magnetism and Pressure-induced Superconductivity of Checkerboard-type Charge-ordered Molecular Conductor -(meso-DMBEDT-TTF)2X (X = PF6 and AsF6)
Takahisa Shikama, Tatsuya Shimokawa, Sangchul Lee, Takayuki Isono, Akira Ueda, Kazuyuki Takahashi, Akiko Nakao, Reiji Kumai, Hironori Nakao, Kensuke Kobayashi, Youichi Murakami, Motoi Kimata, Hiroyuki Tajima, Kazuyuki Matsubayashi, Yoshiya Uwatoko, Yutaka Nishio, Koji Kajita, Hatsumi Mori
2012, Crystals, 2(4) (4), 1502 - 1513, English
[Refereed]
Scientific journal

Development of chiral molecular crystals
Sara J. Krivickas, Chiho Hashimoto, Kazuyuki Takahashi, John D. Wallis, Hatsumi Mori
2012, Phys. Status Solidi C, 9(5) (5), 1146 - 1148, English
[Refereed]
Scientific journal

Charge-order driven proton arrangement in a hydrogen-bonded charge-transfer complex based on a pyridyl-substituted TTF derivative
Sangchul Lee, Akira Ueda, Hiromichi Kamo, Kazuyuki Takahashi, Mikio Uruichi, Kaoru Yamamoto, Kyuya Yakushi, Akiko Nakao, Reiji Kumai, Kensuke Kobayashi, Hironori Nakao, Youichi Murakami, Hatsumi Mori
2012, Chem. Commun., 48(69) (69), 8673 - 8675, English
[Refereed]
Scientific journal

One-dimensional antiferromagnetic behavior of a chiral molecular crystal, a’ -(S,S-DMBEDT-TTF)2PF6
S. J. Krivickas, A. Ichikawa, TAKAHASHI Kazuyuki, H. Tajima, J. D. Wallis, H. Mori
Aug. 2011, Synth. Met., 161(15-16) (15-16), 1563 - 1565, English
[Refereed]
Scientific journal

Structural and magnetic studies on two-dimensional square planar lattice magnets composed of organic radical cation salts (Benzo[1, 2-d:4, 5-d']Bis[1, 3,2]dithiazolyl-2-zolium) X (X = TlBr4, TlI4, and InI 4)
Wataru Fujita, Kazuyuki Takahashi, Hayao Kobayashi
Feb. 2011, Crystal Growth and Design, 11(2) (2), 575 - 582, English
[Refereed]
Scientific journal

Structures and electrical properties of (BTM-TS-TTP)4PF6
M. Yasuda, E. Fujiwara, S. Aonuma, H. Fujiwara, T. Sugimoto, T. Nakayashiki, K. Tanaka, K. Takahashi, H. Kobayashi, Y. Misaki
2011, Bulletin of the Chemical Society of Japan, 84(1) (1), 79 - 81, English
[Refereed]
Scientific journal

Implication to the catalytic process of hemeproteins
Ohgo Yoshiki, Hashizume Daisuke, Takahashi Kazuyuki, Mori Hatsumi, Hayami Shinya, Fujiwara Motoyasu, Neya Saburo, Namatamei Yukiko, Nakamura Mikio
2011, ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES, 67, C427 - C428
[Refereed]

Dielectric response of novel one-dimensional hydrogen-bonded molecular crystal [4,6-dmpH][Hca]
Hironori Ohchi, Kazuyuki Takahashi, Jyun-Ichi Yamaura, Shinya Takaishi, Hatsumi Mori
Elsevier B.V., Jun. 2010, Physica B: Condensed Matter, 405(11) (11), S341 - S343, English
[Refereed]
International conference proceedings

Peculiar electric-field-induced metastable state of charge-ordered molecular conductor beta-(meso-DMBEDT-TTF)(2)PF6
Shoichi Niizeki, Tomonori Asano, Kazuyuki Takahashi, Hatsumi Mori, Hiroyuki Matsuzaki, Hiroshi Okamoto, Yutaka Nishio
Jun. 2010, PHYSICA B-CONDENSED MATTER, 405(11) (11), S37 - S40, English
[Refereed]
Scientific journal

Correlation between the magnetic behaviors and dimensionality of intermolecular interactions in Fe(III) spin crossover compounds
Takahashi Kazuyuki, Sato Tetsuya, Mori Hatsumi, Tajima Hiroyuki, Sato Osamu
Jun. 2010, PHYSICA B-CONDENSED MATTER, 405(11) (11), S65 - S68, English
[Refereed]
Scientific journal

Metallic coordination supramolecule, [Cu(I)Cl0.2Br1.3(pyra-TTF)(0.5+)]
Ichikawa Shun, Takahashi Kazuyuki, Matsuda Masaki, Tajima Hiroyuki, Mori Hatsumi
2010, JOURNAL OF MATERIALS CHEMISTRY, 20(45) (45), 10130 - 10134, English
[Refereed]
Scientific journal

Superconductivity competitive with checkerboard-type charge ordering in the organic conductor β- (meso-DMBEDT-TTF) 2 PF6
Naoki Morinaka, Kazuyuki Takahashi, Ryoma Chiba, Fumiko Yoshikane, Shoichi Niizeki, Masayuki Tanaka, Kyuya Yakushi, Masahito Koeda, Masato Hedo, Tetsuya Fujiwara, Yoshiya Uwatoko, Yutaka Nishio, Kohji Kajita, Hatsumi Mori
Sep. 2009, Physical Review B - Condensed Matter and Materials Physics, 80(9) (9), English
[Refereed]
Scientific journal

Mechanism of reversible spin transition with a thermal hysteresis loop in [Fe-III(qsal)(2)][Ni(dmise)(2)] center dot 2CH(3)CN: Selenium analogue of the precursor of an Fe(III) spin-crossover molecular conducting system
Kazuyuki Takahashi, Hatsumi Mori, Hayao Kobayashi, Osamu Sato
Jun. 2009, POLYHEDRON, 28(9-10) (9-10), 1776 - 1781, English
[Refereed]
Scientific journal

Syntheses, crystal structures, and physical properties of copper complexes with dimethylthio-pyrazino-selenathiafulvalene (=Dmt-Pyra-STF) as ligand: trans-[CuCl2(Dmt-Pyra-STF)2] and [Cu2Br2.5(Dmt-Pyra-STF)]
Shun Ichikawa, Kazuyuki Takahashi, Hatsumi Mori, Jun-ichi Yamaura
Dec. 2008, Solid State Sciences, 10(12) (12), 1724 - 1728, English
[Refereed]
Scientific journal

Dielectric response and electric-field-induced metastable state in an organic conductor β-(meso-DMBEDT-TTF)2PF6
Shoichi Niizeki, Fumiko Yoshikane, Kentaroh Kohno, Kazuyuki Takahashi, Hatsumi Mori, Yoshimasa Bando, Tadashi Kawamoto, Takehiko Mori
Jul. 2008, Journal of the Physical Society of Japan, 77(7) (7), English
[Refereed]
Scientific journal

Evidence of the chemical uniaxial strain effect on electrical conductivity in the spin-crossover conducting molecular system
Takahashi Kazuyuki, Cui Heng Bo, Okano Yoshinori, Kobayashi Hayao, Mori Hatsumi, Tajima Hiroyuki, Einaga Yasuaki, Sato Osamu
May 2008, Journal of the American Chemical Society, 130(21) (21), 6688 - 6689, English, International magazine
Scientific journal

Intrinsic carrier doping in antiferromagnetically interacted supramolecular copper complexes with (pyrazino)tetrathiafulvalene (pyra-TTF) as the ligand, and (pyra-TTF)(2)
Ichikawa Shun, Kimura Shinya, Takahashi Kazuyuki, Mori Hatsumi, Yoshida Gosuke, Manabe Yuichi, Matsuda Masaki, Tajima Hiroyuki, Yamaura Jun-ichi
May 2008, INORGANIC CHEMISTRY, 47(10) (10), 4140 - 4145, English
[Refereed]
Scientific journal

Metal-organic frameworks from copper dimers with cis- and trans-1,4-cyclohexanedicarboxylate and cis,cis-1,3,5-cyclohexanetricarboxylate
Hitoshi Kumagai, Motoko Akita-Tanaka, Katsuya Inoue, Kazuyuki Takahashi, Hayao Kobayashi, Serge Vilminot, Mohamedally Kurmoo
Jul. 2007, INORGANIC CHEMISTRY, 46(15) (15), 5949 - 5956, English
[Refereed]
Scientific journal

Electrical conductivity modulation coupled to a high-spin-low-spin conversion in the molecular system [Fe^III(qsal)₂][Ni(dmit) ₂]₃·CH₃CN·H₂O
Takahashi Kazuyuki, Cui Heng Bo, Okano Yoshinori, Kobayashi Hayao, Einaga Yasuaki, Sato Osamu
Jul. 2006, Inorg. Chem., 45(15) (15), 5739 - 5741, English
Scientific journal

Hybrid organic-inorganic conductor with a magnetic chain anion: k-BETS2[Fe-III(C2O4)Cl-2] [BETS = bis(ethylenedithio)tetraselenafulvalene]
B Zhang, ZM Wang, Y Zhang, K Takahashi, Y Okano, HB Cui, H Kobayashi, K Inoue, M Kurmoo, FL Pratt, DB Zhu
Apr. 2006, INORGANIC CHEMISTRY, 45(8) (8), 3275 - 3280, English
[Refereed]
Scientific journal

Magnetic transitions of single-component molecular metal [Au(tmdt)(2)] and its alloy systems
B Zhou, M Shimamura, E Fujiwara, A Kobayashi, T Higashi, E Nishibori, M Sakata, HB Cui, K Takahashi, H Kobayashi
Mar. 2006, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 128(12) (12), 3872 - 3873, English
Scientific journal

A magnetic organic conductor based on a pi donor with a stable radical and a magnetic anion - A step to magnetic organic metals with two kinds of localized spin systems
S Otsubo, HB Cui, HJ Lee, H Fujiwara, K Takahashi, Y Okano, H Kobayashi
Jan. 2006, CHEMISTRY LETTERS, 35(1) (1), 130 - 131, English
[Refereed]
Scientific journal

Organic Metals Based on an Asymmetric π Donor PEDT-TSF, (PEDT-TSF)_2FeX_4 (PEDT-TSF = Pyrazinoethylenedithiotetraselenafulvalene ; X = Cl, Br)
OTSUBO Saika, TAKAHASHI Kazuyuki, CUI HengBo, OKANO Yoshinori, KOBAYASHI Hayao
(PEDT-TSF)₂FeCl₄ is the first κ-type organic metal based on an asymmetric π donor with a pyrazine ring, PEDT-TSF. (PEDT-TSF)₂FeBr₄ has another type of metallic layers composed of unique tetradic PEDT-TSF columns, suggesting that PEDT-TSF is a suitable donor to afford metallic conductors. The extended Hückel tight-binding band examination showed a suitable choice of the atomic orbital parameters to be essential to obtain reasonable results.
The Chemical Society of Japan, Dec. 2005, Chemistry Letters, 34(12) (12), 1598 - 1599, English

The light-induced excited spin state trapping effect on Ni(dmit) ₂ salt with an Fe(III) spin-crossover cation
Takahashi Kazuyuki, Cui HengBo, Kobayashi Hayao, Einaga Yasuaki, Sato Osamu
Sep. 2005, Chem. Lett., 34(9) (9), 1240 - 1241, English
Scientific journal

Mechanism and relaxation kinetics of photo-induced valence tautomerism of [Co(phen)(3,5-DBSQ)2]·C6H5Cl
Aili Cui, Kazuyuki Takahashi, Akira Fujishima, Osamu Sato
Oct. 2004, Journal of Photochemistry and Photobiology A: Chemistry, 167(2-3) (2-3), 69 - 73, English
[Refereed]
Scientific journal

Tetrathiapentalene-type donors containing (thio)pyran-4-ylidene as a promising π-electron framework for multi-dimensional molecular conductors
Y. Misaki, T. Kaibuki, K. Takahashi, T. Nakayashiki, K. Tanaka, T. Kawamoto, T. Mori
Apr. 2004, Journal De Physique. IV : JP, 114, 431 - 437, English
[Refereed]
Scientific journal

Synthesis and properties of dimeric BDT-TTP derivatives
Y. Misaki, K. Takahashi, S. Watanabe, H. Fueno, K. Tanaka
Apr. 2003, Synthetic Metals, 137(1-3) (1-3), 937 - 938, English
[Refereed]
Scientific journal

Synthesis and properties of new extended TTP analogs
Y. Misaki, Y. Natsume, K. Takahashi, H. Fueno, K. Tanaka
Apr. 2003, Synthetic Metals, 135(1-3) (1-3), 671 - 672, English
[Refereed]
Scientific journal

Structural color and the lotus effect
Zhong-Ze Gu, Hiroshi Uetsuka, Kazuyuki Takahashi, Rie Nakajima, Hiroshi Onishi, Akira Fujishima, Osamu Sato
Feb. 2003, Angewandte Chemie - International Edition, 42(8) (8), 894 - 897, English
[Refereed]
Scientific journal

An abrupt spin transition based on short S center dot center dot center dot S contacts in a novel Fe(II) complex whose ligand contains a 1, 3-dithiole ring.
Takahashi, K, T. Kawakami
2003, Chemical Communications, (18) (18), 2374 - 2375, English
Scientific journal

Photo-induced valence tautomerism in a Co compound
O Sato, S Hayami, ZZ Gu, K Takahashi, R Nakajima, K Seki, A Fujishima
Jun. 2002, JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 149(1-3) (1-3), 111 - 114, English
[Refereed]
Scientific journal

Photo-induced reverse valence tautomerism in a metastable Co compound
Osamu Sato, Shinya Hayami, Zhong Ze Gu, Kazuyuki Takahashi, Rie Nakajima, Akira Fujishima
Mar. 2002, Chemical Physics Letters, 355(1/2) (1/2), 169 - 174, English
Scientific journal

Preparation and Properties of Metal Complexes with TTP-Dithiolate Ligands
Yohji Misaki, Yoshihiro Tani, Kazuyuki Takahashi, Kazuyoshi Tanaka
Several copper and platinum complexes with TTP (2,5-bis(1,3-dithiol-2-ylidene)-1,3,4,6-tetrathiapentalene) dithiolato ligands, Cu(ttpdt) 2 ( 1 ) and Pt(ttpdt)(bpy) ( 2 ), have been prepared. The tetrakis(ethylthio) and tetrakis(hexylthio) derivatives of neutral Cu(ttpdt) 2 showed relatively high conductivity of rt =10 m 2 S cm m 1 on compressed pellets. On the other hand, radical cation salts of 1 and 2 exhibited moderate conductivity of rt =10 m 2 m 10 m 4 S cm m 1 . dithiolene complex tetrathiapentalene cyclic voltammetry electrical conductivity
Informa UK Limited, Jan. 2002, Molecular Crystals and Liquid Crystals, 379(1) (1), 71 - 76

New TTP Donors Containing Chalcogenopyran-4-ylidene: Preparation, Structures, and Electrical Properties
Kazuyuki Takahashi, Takashi Nakayashi, Yohji Misaki, Kazuyoshi Tanaka
Several TM-PDT analogous donors, where TM-PDT is 2-[4,5-bis(thiomethyl)-1,3-dithiol-2-ylidene]-5-(pyran-4-ylidene)-1,3,4,6-tetrathiapentalene, have been prepared. Cyclic voltammetry demonstrated that chalcogen atom exchange at chalcogenopyran moiety in donors strongly influenced their redox potentials. Electrical conductivity of all their salts showed a semiconducting behavior with relatively small activation energy. Crystal structure of (SM-PDT)(TCNQ), where TM-PDT is 2-[4,5-bis(selenomethyl)-1,3-dithiol-2-ylidene]-5-(pyran-4-ylidene)-1,3,4,6-tetrathiapentalene, has been revealed to compose of the D-A type mixed stacks.
Informa UK Limited, Jan. 2002, Molecular Crystals and Liquid Crystals, 376(1) (1), 107 - 112

Synthesis and properties of TTP analog with a cyclohexenecyclohexene ring inserted
Y. Misaki, T. Kaibuki, K. Takahashi, H. Tanioka, K. Tanaka
2002, Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals, 380, 151 - 155, English
[Refereed]
Scientific journal

Preparation and properties of metal complexes with TTP-dithiolate ligands
Y. Misaki, Y. Tani, K. Takahashi, K. Tanaka
2002, Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals, 379, 71 - 76, English
[Refereed]
Scientific journal

New TTP donors containing chalcogenopyran-4-ylidene: Preparation, structures, and electrical properties
K. Takahashi, T. Nakayashi, Y. Misaki, K. Tanaka
2002, Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals, 376, 107 - 112, English
[Refereed]
Scientific journal

Photo-reversible valence tautomerism in a Co compound
Osamu Sato, Shinya Hayami, Zhong Ze Gu, Kazuyuki Takahashi, Rie Nakajima, Akira Fujishima
Jan. 2002, Phase Transitions, 75(7-8) (7-8), 779 - 785, English
Scientific journal

Unusually long-lived light-induced metastable state in a thermochromic copper(II) complex.
Takahashi, K, Nakajima, R
Lead, 2002, Chemical Communications, (15) (15), 1578 - 1579, English
Scientific journal

Preparation and Characterization of novel aromatic-inserted tris-fused tetrathiafulvalenes.
Takahashi, K, H. Tanioka
2002, Chemistry Letters, (10) (10), 1002 - 1003, English
Scientific journal

Preparation and electrical properties of the novel TTP donors including the BETS unit
K. Takahashi, K. Tanaka, M. Taniguchi, Y. Misaki, K. Tanaka, T. Mori
Mar. 2001, Synthetic Metals, 120(1-3) (1-3), 955 - 956, English
[Refereed]
Scientific journal

A novel organic conductor with two-dimensional molecular array by the 'edge-to-edge' donor interaction.
Takahashi, K, T. Nakayashiki
2001, Chemistry Letters, (2) (2), 162 - 163, English
Scientific journal

Furan-fused TCNQ and DCNQI : Synthesis and properties.
Takahashi, K, K. Kobayashi
2000, Journal of Organic Chemistry, 65(8) (8), 2577 - 2579, English
Scientific journal

Preparation and redox properties of longitudinally twinned TCNQ: Hexacyanostilbenequinodimethane dianion.
Takahashi, K, K. Kobayashi
1999, Tetrahedron Letters, 40(29) (29), 5349 - 5352, English
Scientific journal

Thiophene-fused DCNQI derivatives: Their copper iodide complexes as a new family of molecular conductors
K Takahashi, Y Mazaki, K Kobayashi
1997, PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS, 120, 421 - 422, English
Scientific journal

A novel coordination polymer derived from thiophene-fused DCNQI and CuI: A new family of DCNQI based conducting copper complexes
K Takahashi, Y Mazaki, K Kobayashi
Lead, Oct. 1996, CHEMICAL COMMUNICATIONS, (19) (19), 2275 - 2276, English
[Refereed]
Scientific journal

Conducting polynuclear CuI complexes with thiophene-fused DCNQI ligands
K Takahashi, Y Mazaki, K Kobayashi
1996, MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 285, 175 - 180, English
[Refereed]
Scientific journal

■ MISC

二核金属錯体(PF₆)₃のスピン‐電荷結合転移による自発電気分極
渡邊臨及, 立古佳与, 金川慎治, 高橋一志, 佐藤治, 山本薫
04 Aug. 2018, 応用物理・物理系学会中国四国支部合同学術講演会講演予稿集, 2018, 43, Japanese

スピン‐電荷結合系二核金属錯体[Fe(RR‐cth)(Co(SS‐cth)(dhbq)](PF₆)₃における自発電気分極の焦電観測
山本薫, 立古佳与, 金川慎治, 高橋一志, 佐藤治
2018, 分子科学討論会講演プログラム&要旨(Web), 12th, ROMBUNNO.1D08 (WEB ONLY), Japanese

Universal Nature of Quantum Spin Liquid in Organic Triangular Lattices Probed by Torque Magnetometry
Isono T, Kamo H, Ueda A, Takahashi K, Kimata M, Tajima H, Tsuchiya S, Terashima T, Uji S, Mori H
The Physical Society of Japan (JPS), 26 Aug. 2013, Meeting abstracts of the Physical Society of Japan, 68(2) (2), 780 - 780, Japanese

Development of Multifunctional Molecular Materials in Which Magnetism and Conductivity Are Correlated
MORI H., TAKAHASHI K.
日本応用磁気学会, 01 Jun. 2013, まぐね = Magnetics Japan, 8(3) (3), 148 - 154, Japanese

28pPSB-52 Photoinduced phase transition of charge ordered molecular crystal β-(meso-DMBEDT-TTF)_2PF_6 II
Nonaka H., Uemura H., Yada H., Matsuzaki H., Shikama T., Takahashi K., Mori H., Okamoto H.
The Physical Society of Japan (JPS), 26 Mar. 2013, Meeting abstracts of the Physical Society of Japan, 68(1) (1), 845 - 845, Japanese

カテコール縮環型TTF誘導体を用いた新規有機伝導体の合成と構造,性質
伊藤悠太, 上田顕, 加茂博道, 高橋一志, 森山広思, 森初果
2013, 日本化学会講演予稿集, 93rd(2) (2)

20pEB-10 Possible spin-liquid state of a dimer-Mott insulator κ-H_3(Cat-EDT-TTF)_2
Isono T, Ueda A, Kamo H, Takahashi K, Kimata M, Tajima H, Tsuchiya S, Terashima T, Uji S, Mori H
The Physical Society of Japan (JPS), 24 Aug. 2012, Meeting abstracts of the Physical Society of Japan, 67(2) (2), 791 - 791, Japanese

ピリジル置換TTF誘導体を用いたプロトン性電荷移動錯体の構造と物性
LEE Sangchul, 四竈格久, 加茂博道, 高橋一志, 上田顕, 木俣基, 田島裕之, 売市幹大, 山本薫, 薬師久弥, 中尾朗子, 熊井玲児, 小林賢介, 村上洋一, 森初果
09 Mar. 2012, 日本化学会講演予稿集, 92nd(2) (2), 304, Japanese

カテコール縮環TTF Cat‐TTF誘導体を用いた水素結合を有するκ‐型単一成分電導体の作成,構造と物性
加茂博道, 磯野貴之, 四竈格久, 高橋一志, 上田顕, 木俣基, 田島裕之, 中尾朗子, 熊井玲児, 小林賢介, 中尾裕則, 村上洋一, 売市幹大, 山本薫, 森初果
09 Mar. 2012, 日本化学会講演予稿集, 92nd(2) (2), 303, Japanese

24pPSB-10 Photoinduced phase transition of charge ordered molecular crystal β-(meso-DMBEDT-TTF)_2PF_6
Nonaka H., Uemura H., Yada H., Matsuzaki H., Shikama T., Takahashi K., Mori H., Okamoto H.
The Physical Society of Japan (JPS), 05 Mar. 2012, Meeting abstracts of the Physical Society of Japan, 67(1) (1), 793 - 793, Japanese

水素結合を有する新奇な単一成分κ型分子性伝導体の高圧物性
磯野貴之, 加茂博道, 四竃格久, 上田顕, 高橋一志, 中尾朗子, 熊井玲児, 小林賢介, 中尾裕則, 村上洋一, 売市幹大, 山本薫, 松林和幸, 上床美也, 森初果
The Physical Society of Japan (JPS), 05 Mar. 2012, 日本物理学会講演概要集, 67(1) (1), 868 - 868, Japanese

不斉炭素を有するBEDT-TTFジオール誘導体を用いたキラル錯体の合成および性質
橋本千歩, 上田顕, KRIVICHAS Sara, 高橋一志, WALLIS John, 森初果
2012, 分子科学討論会講演プログラム&要旨(Web), 6th

セレン原子導入型カテコール縮環TTF誘導体を基盤とした新規有機伝導体の合成と構造,物性
上田顕, 加茂博道, 磯野貴之, 高橋一志, 中尾朗子, 熊井玲児, 小林賢介, 中尾裕則, 村上洋一, 売市幹大, 山本薫, 森初果
2012, 分子科学討論会講演プログラム&要旨(Web), 6th

18pEB-15 Infrared Imaging of the Organic Charge-Order Insulators β-(meso-DMBEDT-TTF)_2PF_6
Okazaki R, Shikama T, Takahashi K, Mori H, Nishina Y, Horikawa A, Asai S, Morioka T, Yasui Y, Terasaki I, Ikemoto Y, Moriwaki T
一般社団法人日本物理学会, 2012, Meeting Abstracts of the Physical Society of Japan, 67(0) (0), 757 - 757, Japanese

24pBK-6 Competition between Dimer-Mott and Charge-Order Insulators in β-(meso-DMBEDT-TTF)_2PF_6
Okazaki R, Mori H, Nakaya H, Sasaki T, Nishina Y, Horikawa A, Yasui Y, Terasaki I, Ikemoto Y, Moriwaki T, Shikama T, Takahashi K
一般社団法人日本物理学会, 2012, Meeting Abstracts of the Physical Society of Japan, 67(0) (0), 876 - 876, Japanese

25aTA-9 Nonlinear conduction in β-(BEDT-TTF)_2PF_6
Ichikawa A., Asano T., Takahashi K., Mori H., Mori T.
The Physical Society of Japan (JPS), 03 Mar. 2011, Meeting abstracts of the Physical Society of Japan, 66(1) (1), 843 - 843, Japanese

25aTA-8 Conducting and magnetic properties for β-(meso-DMBEDT-TTF)_2PF_6
Shikama T., Krivickas Sara, Takahashi K., Mori H., Matsubayashi K., Uwatoko Y., Kimata M., Tajima H., Yoshizawa H.
The Physical Society of Japan (JPS), 03 Mar. 2011, Meeting abstracts of the Physical Society of Japan, 66(1) (1), 843 - 843, Japanese

電荷秩序系有機導体の電場応答
市川敦, 高橋一志, 中尾朗子, 熊井玲児, 中尾裕則, 小林賢介, 村上洋一, 森初果
2011, 分子科学討論会講演プログラム&要旨(Web), 5th

圧力誘起超伝導体β-(meso-DMBEDT-TTF)₂PF₆の構造及び伝導性,磁性
四竃格久, 下川達也, 高橋一志, 森初果, 熊井玲児, 中尾朗子, 中尾祐則, 小林賢介, 村上洋一, 木俣基, 田島裕之, 松林和幸, 上床美也
2011, 分子科学討論会講演プログラム&要旨(Web), 5th

20aGT-8 Nonlinear conduction of θ-(BEDT-TTF)_2RbZn(SCN)_4
Otsuka Y., Asano T., Takahashi K., Mori H.
The Physical Society of Japan (JPS), 01 Mar. 2010, Meeting abstracts of the Physical Society of Japan, 65(1) (1), 856 - 856, Japanese

20aGT-2 Nonlinear conduction and magnetoresistance of β-(BEDT-TTF)_2PF_6
Asano T., Takahashi K., Mori H., Mori T.
The Physical Society of Japan (JPS), 01 Mar. 2010, Meeting abstracts of the Physical Society of Japan, 65(1) (1), 855 - 855, Japanese

20aGT-4 Magnetoresistance and nonlinear conduction for α-(BEDT-TTF)_2I_3 and α'-(BEDT-TTF)_2IBr_2
Nakamura T, Asano T, Takahashi K, Mori H, Nisio Y, Kajita K, Yamamoto K, Yakushi K
The Physical Society of Japan, 2010, Meeting Abstracts of the Physical Society of Japan, 65(0) (0), 855 - 855, Japanese

30aYF-5 Magnetotransport effects in a molecular conductor β-(meso-DMBEDT-TTF)_2PF_6
Niizeki S., Takahashi K., Morinaka N., Mori H., Nakao A., Toki M., Sawa H.
The Physical Society of Japan (JPS), 03 Mar. 2009, Meeting abstracts of the Physical Society of Japan, 64(1) (1), 854 - 854, Japanese

30aYF-7 Negative differential resistance below room temperature in an organic conductor β-(BEDT-TTF)_2PF_6
Asano T., Niizeki S., Takahashi K., Mori E., Mori H., Nishio Y., Kajita K.
The Physical Society of Japan (JPS), 03 Mar. 2009, Meeting abstracts of the Physical Society of Japan, 64(1) (1), 854 - 854, Japanese

Magnetoresistance effect under ambient pressure for β-(meso-DMBEDT-TTF)₂PF₆
新関彰一, 高橋一志, 森中直紀, 森初果, 中尾朗子, 土岐睦, 澤博, 西尾豊, 梶田晃示
2009, 日本化学会講演予稿集, 89th(1) (1)

29pYF-3 Nonlinear conduction and giant magnetoresistance for α-(BEDT-TTF)_2I_3
Mori E, Niizeki S, Asano T, Takahashi K, Mori H, Nishio Y, Kajita K, Yamamoto K, Yakushi K
The Physical Society of Japan, 2009, Meeting Abstracts of the Physical Society of Japan, 64(0) (0), 842 - 842, Japanese

26aWB-8 Competition of Checkerboard-Type Charge-Ordered and superconducting phases of β-(meso-DMBEDT-TTF)_2PF_6
Morinaka N., Yoshikane F., Takahashi K., Mori H., Fujiwara T., Uwatoko Y., Nishio Y., Kajita K.
The Physical Society of Japan (JPS), 29 Feb. 2008, Meeting abstracts of the Physical Society of Japan, 63(1) (1), 845 - 845, Japanese

26aWB-9 Time-resolved nonlinear conduction in an organic conductor β-(meso-DMBEDT-TTF)_2PF_6
Niizeki S., Yoshikane F., Takahashi K., Mori H., Bando Y., Kawamoto T., Mori T.
The Physical Society of Japan (JPS), 29 Feb. 2008, Meeting abstracts of the Physical Society of Japan, 63(1) (1), 846 - 846, Japanese

β-(meso-DMBEDT-TTF)₂PF₆の非線形伝導における電場効果・熱効果の検討
新関彰一, 高橋一志, 森初果, 西尾豊, 中尾朗子, 土岐睦, 澤博
2008, 分子科学討論会講演プログラム&要旨(Web), 2nd

Two-step spin transition of an Fe (III) complex
Sato O., Takahashi K., Nakamura T., Hikita M., Einaga Y.
The Physical Society of Japan (JPS), 15 Aug. 2003, Meeting abstracts of the Physical Society of Japan, 58(2) (2), 611 - 611, Japanese

XAFS study of the photoinduced phase transitions in Cu ethylenediamine complexes
Yokoyama Toshihiko, Takahashi Kazuyuki, Sato Osamu
The Physical Society of Japan (JPS), 06 Mar. 2003, Meeting abstracts of the Physical Society of Japan, 58(1) (1), 677 - 677, Japanese

A light-induced color change in discontinuous thermochromic complexes
Takahashi K., Nakajima R., Gu Z.-Z., Fujishima A., Sato O.
The Physical Society of Japan (JPS), 13 Aug. 2002, Meeting abstracts of the Physical Society of Japan, 57(2) (2), 645 - 645, Japanese

Photoinducd spin-transition in an Fe compound
Sato O., Takahashi K., Gu Z.Z., Fujishima A.
The Physical Society of Japan (JPS), 13 Aug. 2002, Meeting abstracts of the Physical Society of Japan, 57(2) (2), 634 - 634, Japanese

24aYD-1 Photoinducd voience tautomerism in Co compounds
Sato O., Hayami S., Takahashi K., Nakajima R., Seki K., Gu Z., Fujishima A.
The Physical Society of Japan (JPS), 01 Mar. 2002, Meeting abstracts of the Physical Society of Japan, 57(1) (1), 660 - 660, Japanese

■ Lectures, oral presentations, etc.

シッフ塩基配位子を用いた中性混合原子価錯体の構造と物性
村上陽平, 持田智行, 櫻井敬博, 大久保晋, 太田仁, 高橋一志
日本化学会第105春季年会, Mar. 2025, Japanese, 日本化学会, 関西大学千里山キャンパス, Japan, Domestic conference
Oral presentation

新規キノンアジン誘導体の合成と酸化還元特性
木村真佑里, 高橋一志
日本化学会第105春季年会, Mar. 2025, Japanese, 日本化学会, 関西大学千里山キャンパス, Japan, Domestic conference
Oral presentation

アニオン性スピンクロスオーバー鉄(Ⅲ)錯体の分子間相互作用と転移挙動の相関
広田舞, 櫻井敬博, 太田仁, 高橋一志
日本化学会第105春季年会, Mar. 2025, Japanese, 日本化学会, 関西大学千里山キャンパス, Japan, Domestic conference
Oral presentation

電子供与性基を有するアゾ配位子を用いた中性金属錯体の構造と性質
笠崎泰世, 櫻井敬博, 太田仁, 高橋一志
若手フロンティア研究会2024, Dec. 2024, Japanese, 神戸大学研究基盤センター, 神戸大学百年記念館, Japan, Domestic conference
Poster presentation

ハロゲン置換鉄(III)錯体の磁気挙動と分子間相互作用
広田舞, 高橋一志, 櫻井敬博, 太田仁
若手フロンティア研究会2024, Dec. 2024, Japanese, 神戸大学研究基盤センター, 神戸大学百年記念館, Japan, Domestic conference
Poster presentation

酸化還元活性配位子を用いた中性混合原子価錯体
村上陽平, 持田智行, 櫻井敬博, 大久保晋, 太田仁, 高橋一志
若手フロンティア研究会2024, Dec. 2024, Japanese, 神戸大学研究基盤センター, 神戸大学百年記念館, Japan, Domestic conference
Poster presentation

キノンアジン誘導体の合成と性質
木村真佑里, 高橋一志
若手フロンティア研究会2024, Dec. 2024, Japanese, 神戸大学研究基盤センター, 神戸大学百年記念館, Japan, Domestic conference
Poster presentation

酸化還元活性配位子を用いた中性混合原子価錯体の合成
村上陽平, 持田智行, 櫻井敬博, 大久保晋, 太田仁, 高橋一志
第13回サイエンスフロンティア研究発表会, Oct. 2024, Japanese, 神戸大学理学部, 神戸大学理学部, Japan, Domestic conference
Poster presentation

酸化還元活性配位子を用いた中性混合原子価錯体の合成と物性評価
村上陽平, 持田智行, 櫻井敬博, 大久保晋, 太田仁, 高橋一志
第18回分子科学討論会, Sep. 2024, Japanese, 分子科学会, 京都大学吉田キャンパス, Japan, Domestic conference
Poster presentation

新規キノンアジン型電子受容体の合成と性質
木村真佑里, 高橋一志
第18回分子科学討論会, Sep. 2024, Japanese, 分子科学会, 京都大学吉田キャンパス, Japan, Domestic conference
Poster presentation

スピンクロスオーバー鉄錯体の相互作用エネルギー解析
高橋一志, 松本一樹, 東亮介, 持田智行, 櫻井敬博, 大久保晋, 太田仁
第18回分子科学討論会, Sep. 2024, Japanese, 分子科学会, 京都大学吉田キャンパス, Japan, Domestic conference
Oral presentation

電子供与性基を有するアゾビスフェノレート配位子からなる金属錯体の構造と性質
笠崎泰世, 持田智行, 櫻井敬博, 大久保晋, 太田仁, 高橋一志
第18回分子科学討論会, Sep. 2024, Japanese, 分子科学会, 京都大学吉田キャンパス, Japan, Domestic conference
Oral presentation

ハロゲン置換基がスピンクロスオーバー鉄(III)錯体にもたらす電子的、立体的効果
広田舞, 櫻井敬博, 太田仁, 高橋一志
日本化学会第104春季年会, Mar. 2024, Japanese, 日本化学会, 日本大学理工学部船橋キャンパス, Japan, Domestic conference
Oral presentation

アゾ配位子を有する Ni(III)錯体の原子価不安定性
野口拓海, 宮脇敦大, 持田智行, 櫻井敬博, 大久保晋, 太田仁, 高橋一志
日本化学会第104春季年会, Mar. 2024, Japanese, 日本化学会, 日本大学理工学部船橋キャンパス, Japan, Domestic conference
Oral presentation

電子供与性基を有するアゾ配位子からなるNi錯体の性質
笠崎泰世, 櫻井敬博, 太田仁, 高橋一志
若手フロンティア研究会2023, Dec. 2023, Japanese, 神戸大学研究基盤センター, 神戸大学百年記念館, Japan, Domestic conference
Poster presentation

スピンクロスオーバー鉄(III)錯体のハロゲン置換効果
広田舞, 高橋一志, 櫻井敬博, 大久保晋, 太田仁
若手フロンティア研究会2023, Dec. 2023, Japanese, 神戸大学研究基盤センター, 神戸大学百年記念館, Japan, Domestic conference
Poster presentation

2次元鉄(II)配位高分子のゲスト脱離に伴う構造と磁性の変化
石野圭一郎, 櫻井敬博, 太田仁, 佐藤寛泰, 高橋一志
若手フロンティア研究会2023, Dec. 2023, Japanese, 神戸大学研究基盤センター, 神戸大学百年記念館, Japan, Domestic conference
Poster presentation

酸化還元活性なアゾ配位子を有する Ni(III)錯体の原子価不安定性
野口拓海, 宮脇敦大, 持田智行, 櫻井敬博, 大久保晋, 太田仁, 高橋一志
若手フロンティア研究会2023, Dec. 2023, Japanese, 神戸大学研究基盤センター, 神戸大学百年記念館, Japan, Domestic conference
Poster presentation

Photoinduced Dynamics in the spin-crossover hybrid system probed by intra-molecular vibrational spectra
T. Ishikawa, R. Takahashi, S. Nakano, S. Banu, Y. Okimoto, S. Koshihara, A. Miyawaki, K. Takahashi, Y. Jiang, Stuart A Hayes, R. J, D. Mille
Phase Transition and Dynamical Properties of Spin Transition Materials 2023, Nov. 2023, English, Ichijo Hall, The University of Tokyo, The University of Tokyo, Japan, International conference, Co-authored internationally
Oral presentation

Interaction Energy Analysis of Charged Iron(III) Spin-Crossover Complexes
Kazuyuki Takahashi, Ryosuke Azuma, Tomoyuki Mochida, Takahiro Sakurai, Hitoshi Ohta
Phase Transition and Dynamical Properties of Spin Transition Materials 2023, Nov. 2023, English, Ichijo Hall, The University of Tokyo, The University of Tokyo, Japan, International conference
Oral presentation

鉄(II)錯体の示す二段階スピン転移のメカニズム
高橋一志, 松本一樹, 櫻井敬博, 太田仁
第31回有機結晶シンポジウム, Nov. 2023, Japanese, 公益社団法人日本化学会, 銀杏会館(大阪大学吹田キャンパス), Japan, Domestic conference
Poster presentation

二次元鉄(II)配位高分子のゲスト分子による磁性変化
石野圭一郎, 櫻井敬博, 太田仁, 高橋一志
第31回有機結晶シンポジウム, Nov. 2023, Japanese, 公益社団法人日本化学会, 銀杏会館(大阪大学吹田キャンパス), Japan, Domestic conference
Poster presentation

酸化還元活性配位子を有する Ni(III)錯体の示す原子価不安定性
野口拓海, 宮脇敦大, 持田智行, 櫻井敬博, 大久保晋, 太田仁, 高橋一志
第31回有機結晶シンポジウム, Nov. 2023, Japanese, 公益社団法人日本化学会, 銀杏会館(大阪大学吹田キャンパス), Japan, Domestic conference
Oral presentation

電子供与性基を導入したアゾ配位子を有するニッケル錯体の合成と性質
笠崎泰世, 高橋一志, 櫻井敬博, 太田仁
第12回サイエンスフロンティア研究発表会, Oct. 2023, Japanese, 神戸大学理学部, 神戸大学理学部, Japan, Domestic conference
Poster presentation

スピンクロスオーバー複合体試料における光励起応答の励起波長依存性
石川忠彦, 高橋良弥, 中野真之介, Samiran Banu, 田久保耕, 沖本洋一, 腰原伸也, 宮脇敦大, 高橋一志
日本物理学会第78回年次大会（2023）, Sep. 2023, Japanese, 日本物理学会, 東北大学川内キャンパス, Japan, Domestic conference
Oral presentation

電子供与性基を有するアゾビスフェノレート配位子からなるニッケル錯体の合成と特性評価
笠崎泰世, 櫻井敬博, 太田仁, 高橋一志
第17回分子科学討論会, Sep. 2023, Japanese, 分子科学会, 大阪大学豊中キャンパス, Japan, Domestic conference
Poster presentation

嵩高い置換基を有するアゾ配位子からなるニッケル錯体の合成と性質
野口拓海, 櫻井敬博, 大久保晋, 太田仁, 髙橋一志
第17回分子科学討論会, Sep. 2023, Japanese, 分子科学会, 大阪大学豊中キャンパス, Japan, Domestic conference
Oral presentation

ハロゲン置換基を導入したアゾビスフェノレート配位子を有する鉄(Ⅲ)錯体のスピンクロスオーバー挙動
広田舞, 高橋一志, 櫻井敬博, 太田仁
第17回分子科学討論会, Sep. 2023, Japanese, 分子科学会, 大阪大学豊中キャンパス, Japan, Domestic conference
Poster presentation

直線架橋型新規酸化還元活性配位子とその配位高分子の合成と性質
石野圭一郎, 高橋一志, 櫻井敬博, 太田仁
第17回分子科学討論会, Sep. 2023, Japanese, 分子科学会, 大阪大学豊中キャンパス, Japan, Domestic conference
Oral presentation

立体障害による安定化をはかったアゾ配位子からなるニッケル錯体の合成と性質
野口拓海, 櫻井敬博, 大久保晋, 太田仁, 高橋一志
日本化学会第103春季年会, Mar. 2023, Japanese, 日本化学会, 東京理科大学野田キャンパス, Japan, Domestic conference
Oral presentation

鉄(II)錯体の示す二段階スピン転移に対する結晶水の効果
松本一樹, 櫻井敬博, 太田仁, 高橋一志
日本化学会第103春季年会, Mar. 2023, Japanese, 日本化学会, 東京理科大学野田キャンパス, Japan, Domestic conference
Oral presentation

電子供与性基を導入したアゾ配位子を有するニッケル錯体の合成と性質
笠崎泰世, 高橋一志, 櫻井敬博, 太田仁
第12回サイエンスフロンティア研究発表会, Oct. 2023, Japanese, 神戸大学理学部, 神戸大学理学部, Japan, Domestic conference
Poster presentation

立体障害を導入したアゾ配位子からなるNi(III)錯体の構造と性質
野口拓海, 高橋一志, 宮脇敦大, 櫻井敬博, 大久保晋, 太田仁
若手フロンティア研究会2022, Dec. 2022, Japanese, 神戸大学研究基盤センター, 神戸大学百年記念館, Japan, Domestic conference
Poster presentation

パラフェニレン伸長新規電子受容性架橋配位子と鉄(II)配位高分子の合成と物性
石野圭一郎, 高橋一志, 櫻井敬博, 太田仁
若手フロンティア研究会2022, Dec. 2022, Japanese, 神戸大学研究基盤センター, 神戸大学百年記念館, Japan, Domestic conference
Poster presentation

鉄(III)錯体の協同的スピン転移のメカニズム解明
松本一樹, 高橋一志, 櫻井敬博, 太田仁
若手フロンティア研究会2022, Dec. 2022, Japanese, 神戸大学研究基盤センター, 神戸大学百年記念館, Japan, Domestic conference
Poster presentation

分子間相互作用エネルギーの温度変化に基づく鉄(III)錯体の協同的スピン転移のメカニズム解明
松本一樹, 東亮介, 高橋一志, 櫻井敬博, 太田仁
第30回有機結晶シンポジウム, Nov. 2022, Japanese, 名古屋大学野依記念学術交流館, Japan, Domestic conference
Oral presentation

三種の同形イオン性鉄(III)スピンクロスオーバー錯体の相互作用エネルギー解析
高橋一志, 東亮介, 櫻井敬博, 太田仁
第30回有機結晶シンポジウム, Nov. 2022, Japanese, 名古屋大学野依記念学術交流館, Japan, Domestic conference
Poster presentation

スピンクロスオーバー錯体複合結晶における超高速光誘起構造変化ダイナミクス
高橋良弥, 中野真之介, Samiran Banu, 石川忠彦, 田久保耕, 沖本洋一, 腰原伸也, 宮脇敦大, 高橋一志, 羽田真毅, Yifeng Jiang, Stuart Hayes, Lai Chung Liu, R. J, Dwayne Mi
日本物理学会 2022年秋季大会, Sep. 2022, Japanese, 日本物理学会, 東京工業大学大岡山キャンパス, Japan, Domestic conference, Co-authored internationally
Oral presentation

The structure of the photoinduced and X-ray induced state in spin-crossover hybrid system
T. Ishikawa, S. Nakano, R. Takahashi, K. Takubo, Y. Okimoto, S. Koshihara, A. Miyawaki, K. Matsumoto, K. Takahashi, T. Yokoyama, K. Ichiyanagi, R. Fukaya, S. Nozawa, A. Sato-Tomita
From optical to THz control of materials, Faraday Discussion, May 2022, English, Web上での発表, International conference
Poster presentation

電子受容性を有する架橋配位子を用いた金属錯体の合成と性質
石野圭一郎, 澤田真緒, 高橋一志
日本化学会第102春季年会, Mar. 2022, Japanese, 日本化学会, Web上での発表, Japan, Domestic conference
Oral presentation

酸化還元活性なアゾビスフェノレート配位子を有するNi(III)錯体の構造と性質
野口拓海, 上田啓示, 宮脇敦大, 高橋一志, 櫻井敬博, 大久保晋, 太田仁
日本化学会第102春季年会, Mar. 2022, Japanese, 日本化学会, Web上での発表, Japan, Domestic conference
Oral presentation

分子間相互作用エネルギー計算によるFe(III)スピンクロスオーバー錯体多形のスピン転移のメカニズム解明
松本一樹, 東亮介, 高橋一志, 櫻井敬博, 太田仁
日本化学会第102春季年会, Mar. 2022, Japanese, 日本化学会, Web上での発表, Japan, Domestic conference
Oral presentation

エネルギー計算に基づく同形鉄(III)錯体のスピンクロスオーバー転移に与える分子間相互作用の効果
高橋一志, 東亮介, 櫻井敬博, 太田仁
日本化学会第102春季年会, Mar. 2022, Japanese, 日本化学会, Web上での発表, Japan, Domestic conference
Oral presentation

放射光 X 線を用いた構造解析によるスピンクロスオーバー複合体試料における X 線誘起スピンクロスオーバー現象の発見
石川忠彦, 中野真之介, 高橋良弥, 田久保耕, 沖本洋一, 腰原伸也, 宮脇敦大, 松本一樹, 高橋一志, 横山利彦, 一柳光平, 深谷亮, 佐藤文菜
日本物理学会第77回年次大会, Mar. 2022, Japanese, 日本物理学会, Web上での発表, Japan, Domestic conference
Oral presentation

スピンクロスオーバー誘起結合異性
高橋一志
東京大学物性研究所短期研究会「分子性固体研究の拡がり：新物質と新現象」, Dec. 2021, Japanese, 東京大学物性研究所, 東京大学物性研究所, Japan, Domestic conference
Oral presentation

Photoinduced structural change in the spin-crossover hybrid system
T. Ishikawa, S. Nakano, T. Okazaki, D. Nishida, K. Takubo, Y. Okimoto, S. Koshihara, M. Hada, A. Miyawaki, K. Takahashi
Photoinduced Phase Transitions and Cooperative Phenomena (PIPT) 7, Nov. 2021, English, PIPT7, Online, United States, International conference
Poster presentation

スピンクロスオーバー転移に与える分子間相互作用の効果
高橋一志, 宮脇敦大, 東亮介, 持田智行, 櫻井敬博, 太田仁
第１５回分子科学討論会, Sep. 2021, Japanese, 分子科学会, Web上での発表, Japan, Domestic conference
Oral presentation

アルキル鎖を導入した鉄(III)スピンクロスオーバー錯体からなる薄膜の作製と性質
東亮介, 高橋一志, 櫻井敬博, 太田仁
錯体化学会第71回討論会, Sep. 2021, Japanese, 錯体化学会, Web上での発表, Japan, Domestic conference
Poster presentation

Fundamentals and applications of molecular switches in metal coordination complexes from π-extended tridentate ligands
Kazuyuki Takahashi
The Bordeaux-Bayreuth symposium on spin state switching, Sep. 2021, English, The Bordeaux-Bayreuth symposium, Online, International conference
[Invited]
Invited oral presentation

長鎖アルキル鎖を導入した鉄(III)スピンクロスオーバー錯体からなる薄膜の作製と性質
東亮介, 高橋一志, 櫻井敬博, 太田仁
日本化学会第101春季年会, Mar. 2021, Japanese, 日本化学会, Web上での発表, Japan, Domestic conference
Oral presentation

アゾビスフェノレート配位子を有するNi(III)錯体の構造と性質
上田啓示, 宮脇敦大, 櫻井敬博, 太田仁, 高橋一志
日本化学会第101春季年会, Mar. 2021, Japanese, 日本化学会, Web上での発表, Japan, Domestic conference
Oral presentation

複合機能性スピンクロスオーバー錯体のテラヘルツ ESR による磁気特性評価
高橋一志
令和2年度神戸大学分子フォトサイエンス研究センター共同研究成果報告会, Mar. 2021, Japanese, 分子フォトサイエンス研究センター, Web上での発表, Japan, Domestic conference
Public discourse

Spin crossover induced Linkage Isomerism in a Neutral Heteroleptic Iron(III) Complex
Kazuyuki Takahashi, Atsuhiro Miyawaki, Kazuo Eda, Tomoyuki Mochida, Takahiro Sakurai, Hitoshi Ohta, Takahito Nakajima
The 1st Asian Conference on Molecular Magnetism, Mar. 2021, English, Online, International conference
Oral presentation

Spin Crossover Induced Structure Transition in the Fe(II) Complex with an Octahedral Anion
東亮介, 高橋一志, 櫻井敬博, 太田仁
第10回CSJフェスタ2020, Oct. 2020, Japanese, 日本化学会, Web上での発表, Japan, Domestic conference
Poster presentation

Structural Phase Transition Induced by a Spin Crossover in the Fe(II) Complex with an Octahedral Anion
東亮介, 高橋一志, 櫻井敬博, 太田仁
分子科学会オンライン討論会, Sep. 2020, Japanese, 分子科学会, Web上での発表, Japan, Domestic conference
Oral presentation

S=1/2 反強磁性鎖KCuMoO4(OH)の単結晶ESR測定II
恒石一義, 高橋英幸, 齋藤佑, 原茂生, 櫻井敬博, 大道英二, 高橋一志, 大久保晋, 太田仁, 那波和宏, 矢島健, 岡本佳比古, 廣井善二
日本物理学会第75回年次大会, Mar. 2020, Japanese, 名古屋大学, Domestic conference
Poster presentation

メトホルミンからなる金属錯体の構造と性質
三宅倖輔, 高橋一志, 菅原健二, 小川渉
日本化学会第100春季年会, Mar. 2020, Japanese, 東京理科大学野田キャンパス, Domestic conference
Oral presentation

アゾビスフェノレート誘導体を有する遷移金属錯体の構造と酸化還元特性
宮脇敦大, 高橋一志, 櫻井敬博, 太田仁
日本化学会第100春季年会, Mar. 2020, Japanese, 東京理科大学野田キャンパス, Domestic conference
Oral presentation

アゾビスフェノレート鉄(III)錯体のスピン転移が誘起する結合異性現象
宮脇敦大, 高橋一志, 櫻井敬博, 太田仁
日本化学会第100春季年会, Mar. 2020, Japanese, 東京理科大学野田キャンパス, Domestic conference
Oral presentation

スピンクロスオーバー(SCO)によって誘起される鉄(II)錯体の構造転移
東亮介, 高橋一志, 櫻井敬博, 太田仁
日本化学会第100春季年会, Mar. 2020, Japanese, 東京理科大学野田キャンパス, Domestic conference
Oral presentation

スピン転移が誘起する新奇な結合異性
宮脇敦大, 高橋一志, 櫻井敬博, 太田仁
若手フロンティア研究会2019, Dec. 2019, Japanese, 神戸大学百年記念館, Domestic conference
Poster presentation

二種類の配位部位を持つ多座配位子錯体の配位構造制御
杉谷真歩, 高橋一志
若手フロンティア研究会2019, Dec. 2019, Japanese, 神戸大学百年記念館, Domestic conference
Poster presentation

鉄(II)錯体におけるスピンクロスオーバー誘起構造転移
東亮介, 高橋一志, 櫻井敬博, 太田仁
若手フロンティア研究会2019, Dec. 2019, Japanese, 神戸大学百年記念館, Domestic conference
Poster presentation

赤外領域光学スペクトルからみたスピンクロスオーバー相転移を起こす複合磁性材料における光誘起状態
西田大介, 石川忠彦, 沖本洋一, 岡崎俊樹, 数土雄也, 腰原伸也, 宮脇敦大, 高橋一志
MRS-J第29回年次大会, Nov. 2019, Japanese, 横浜万国会議センター, Domestic conference
Oral presentation

ピリジン環を有する多座配位子を用いた配位高分子錯体の合成および構造評価
杉谷真歩, 高橋一志
第28回有機結晶シンポジウム, Nov. 2019, Japanese, 香川大学創造工学部林町キャンパス, Domestic conference
Poster presentation

アゾ配位子を有する鉄(III)錯体のスピン転移誘起結合異性
宮脇敦大, 高橋一志, 櫻井敬博, 太田仁
第28回有機結晶シンポジウム, Nov. 2019, Japanese, 香川大学創造工学部林町キャンパス, Domestic conference
Oral presentation

アニオンのサイズ形状による鉄(II)スピンクロスオーバー錯体の磁気挙動の変化
東亮介, 高橋一志
第10回サイエンスフロンティア研究発表会, Oct. 2019, Japanese, 神戸大学, Domestic conference
Poster presentation

鉄(III)錯体のスピン転移に伴う結合異性化
宮脇敦大, 高橋一志
第10回サイエンスフロンティア研究発表会, Oct. 2019, Japanese, 神戸大学, Domestic conference
Poster presentation

Optical study of the photo-induced state of the spin-crossover hybrid system
D. Nishida, T. Ishikawa, T. Okazaki, Y. Sudo, Y. Okimoto, S. Koshihara, A. Miyawaki, K. Takahashi
7th Asain conference on coordination chemistry, English, Kuala lumpur, Malaysia, International conference
Poster presentation

The structure of the photoinduced state of the spin-crossover hybrid system
T. Ishikawa, T. Okazaki, D. Nishida, Y. Sudo, Y. Okimoto, S. Koshihara, M. Hada, A. Miyawaki, K. Takahashi
13th International Symposium on Crystalline Organic Metals, Superconductors and Magnets, Sep. 2019, English, Tomar, Portugal, International conference
Poster presentation

鉄(II)スピンクロスオーバー錯体における対アニオンのサイズ形状効果
東亮介, 高橋一志, 櫻井敬博, 太田仁
錯体化学会第69回討論会, Sep. 2019, 名古屋大学東山キャンパス, Domestic conference
Oral presentation

ヘテロレプティック鉄(III)錯体のスピンクロスオーバー転移と配位子の結合異性
宮脇敦大, 高橋一志, 櫻井敬博, 太田仁
錯体化学会第69回討論会, Sep. 2019, Japanese, 名古屋大学東山キャンパス, Domestic conference
Oral presentation

原子価互変異性金属錯体における電気分極の分光観測
知念拓己, 渡邊臨及, 金川慎治, 塩田淑仁, 吉澤一成, 高橋一志, 佐藤治, 山本薫
第13回分子科学討論会, Sep. 2019, Japanese, 名古屋大学, Domestic conference
Poster presentation

S=1/2反強磁性鎖KCuMoO4(OH)の単結晶ESR測定
恒石一義, 高橋英幸, 齋藤佑, 原茂生, 櫻井敬博, 大道英二, 高橋一志, 大久保晋, 太田仁, 那波和宏, 矢島健, 岡本佳比古, 廣井善二
日本物理学会2019年秋季大会（物性）, Sep. 2019, Japanese, 岐阜大学, Domestic conference
Oral presentation

赤外領域光学スペクトルからみたスピンクロスオーバー相転移を起こす複合磁性材料における光誘起状態
西田大介, 石川忠彦, 沖本洋一, 腰原伸也, 佐藤文菜, 一柳光平, 深谷亮, 宮脇敦大, 高橋一志
日本物理学会2019年秋季大会（物性）, Sep. 2019, Japanese, 岐阜大学, Domestic conference
Poster presentation

スピンクロスオーバー相転移を起こす複合磁性材料における光誘起状態の構造解析
石川忠彦, 西田大介, 沖本洋一, 腰原伸也, 佐藤文菜, 一柳光平, 深谷亮, 宮脇敦大, 高橋一志
2019年日本物理学会2019年秋季大会（物性）, Sep. 2019, Japanese, 岐阜大学, Domestic conference
Oral presentation

電荷を持つ鉄(II)錯体におけるスピンクロスオーバー挙動のアニオン効果
東亮介, TAKAHASHI KAZUYUKI, SAKURAI TAKAHIRO, OHTA HITOSHI
日本化学会第99春季年会 (2019), Mar. 2019, Japanese, 甲南大学岡本キャンパス, Domestic conference
Oral presentation

多機能性配位子を用いた配位高分子の構造と物性
杉谷真歩, TAKAHASHI KAZUYUKI
日本化学会第99春季年会 (2019), Mar. 2019, Japanese, 甲南大学岡本キャンパス, Domestic conference
Oral presentation

π拡張ヘテロレプティック鉄(III)スピンクロスオーバー錯体薄膜の評価
宮脇敦大, TAKAHASHI KAZUYUKI, PHAM Song-Toan, 大戸達彦, 多田博一, SAKURAI TAKAHIRO, OHTA HITOSHI
日本化学会第99春季年会 (2019), Mar. 2019, Japanese, 甲南大学岡本キャンパス, Domestic conference
Oral presentation

ヘテロレプティック鉄(III)スピンクロスオーバー錯体誘導体の構造と物性
宮脇敦大, TAKAHASHI KAZUYUKI, SAKURAI TAKAHIRO, OHTA HITOSHI
日本化学会第99春季年会 (2019), Mar. 2019, Japanese, 甲南大学岡本キャンパス, Domestic conference
Oral presentation

配位能を持つアクセプターからなる錯体の構造と性質
杉谷真歩, TAKAHASHI KAZUYUKI
神戸大学研究基盤センター若手フロンティア研究会2018, Dec. 2018, Japanese, 神戸大学百年記念館, Domestic conference
Poster presentation

スピンクロスオーバー錯体簿膜のFET特性
宮脇敦大, TAKAHASHI KAZUYUKI, Pham Song-Toan, 大戸達彦, 夛田博一, SAKURAI TAKAHIRO, OHTA HITOSHI
神戸大学研究基盤センター若手フロンティア研究会2018, Dec. 2018, Japanese, 神戸大学百年記念館, Domestic conference
Poster presentation

中性ヘテロレプティック鉄（Ⅲ）錯体の結晶構造と磁気挙動への置換効果
宮脇敦大, TAKAHASHI KAZUYUKI, SAKURAI TAKAHIRO, OHTA HITOSHI
第27回有機結晶シンポジウム, Oct. 2018, Japanese, 近畿大学東大阪キャンパス, Domestic conference
Poster presentation

ピリジン環を有する電子受容性配位子とその錯体の構造と物性
SUGITANI MAHO, TAKAHASHI KAZUYUKI
第27回有機結晶シンポジウム, Oct. 2018, Japanese, 近畿大学東大阪キャンパス, Domestic conference
Poster presentation

スピンクロオーバー転移に与える格子エンタルピーの効果
TAKAHASHI KAZUYUKI, 東亮介, SAKURAI TAKAHIRO, OHTA HITOSHI
第27回有機結晶シンポジウム, Oct. 2018, Japanese, 近畿大学東大阪キャンパス, Domestic conference
Oral presentation

スピン-電荷結合系二核金属錯体[Fe(RR-cth)(Co(SS-cth)(dhbq)](PF6)3における自発電気分極の焦電観測
YAMAMOTO KAORU, RYUGO KAYO, KANEGAWA SHINJI, TAKAHASHI KAZUYUKI, SATO OSAMU
第12回分子科学討論会, Sep. 2018, Japanese, 福岡国際会議場, Domestic conference
Oral presentation

スピンクロスオーバー相転移を起こす複合磁性材料における光誘起状態の研究
石川忠彦, 岡崎俊樹, 沖本洋一, 腰原伸也, 羽田真毅, 宮脇敦大, TAKAHASHI KAZUYUKI
日本物理学会2018秋季大会, Sep. 2018, Japanese, 同志社大学京田辺キャンパス, Domestic conference
Oral presentation

Contribution of non-covalent interactions to spin crossover compounds
TAKAHASHI KAZUYUKI
43rd International Conference on Coordination Chemistry, Aug. 2018, English, Sendai International Center, International conference
Oral presentation

含窒素芳香環を有する電子受容体を用いた新規分子性錯体の合成と性質
杉谷真歩, TAKAHASHI KAZUYUKI
日本化学会第98春季年会（2018）, Mar. 2018, Japanese, 日本大学理工学部, Domestic conference
Oral presentation

π共役系配位子を有する中性鉄錯体の磁気的性質と電流-電圧特性
宮脇敦大, TAKAHASHI KAZUYUKI, PHAM Song-Toan, 大戸達彦, 夛田博一, SAKURAI TAKAHIRO, OHTA HITOSHI
日本化学会第98春季年会（2018）, Mar. 2018, Japanese, 日本大学理工学部, Domestic conference
Oral presentation

Electronic structure and photoinduced dynamics in the synergistic spin transition system
Toshiki Okazaki, Tadahiko Ishikawa, Seiichi Tanaka, Ken Onda, Yoichi Okimoto, Shinya Koshihara, Kazuyuki Takahashi
第27回日本MRS年次大会, Dec. 2017, English, 万国橋会議センター, Domestic conference
Oral presentation

磁性‐非磁性相転移とスピンクロスオーバー転移が結合した複合分子系の電子構造及び光誘起ダイナミクス
岡崎俊樹, 石川忠彦, 沖本洋一, 腰原伸也, 田中誠一, 恩田健, TAKAHASHI KAZUYUKI
日本物理学会 2017年秋季大会, Sep. 2017, Japanese, 岩手大学上田キャンパス, Domestic conference
Poster presentation

Development of New π-Electron Acceptors with Aromatic N-Heterocycles
Kazuyuki Takahashi
12th International Symposium on Crystalline Organic Metals, Superconductors and Magnets, Sep. 2017, English, Miyagi Zao Royal Hotel, International conference
Poster presentation

新規中性ヘテロレプティック鉄錯体の構造と物性
MURATA SUGURU, TAKAHASHI KAZUYUKI, SAKURAI TAKAHIRO, OHTA HITOSHI, YAMAMOTO TAKASHI, EINAGA YASUAKI
日本化学会第97春季年会, Mar. 2017, Japanese, 慶應義塾大学日吉キャンパス, Domestic conference
Oral presentation

含窒素芳香環を有する新規π電子受容体の合成と性質
HIRANO MASATOSHI, TAKAHASHI KAZUYUKI
日本化学会第97春季年会, Mar. 2017, Japanese, 慶應義塾大学日吉キャンパス, Domestic conference
Oral presentation

MgO/Mg2Si/MgB2ナノ複合結晶の磁気異方性
上野勝也, 長嶋廉仁, Seto Yusuke, 松本恵, SAKURAI TAKAHIRO, OHTA HITOSHI, TAKAHASHI KAZUYUKI, UCHINO TAKASHI
第64回応用物理学会春季学術講演会, Mar. 2017, Japanese, パシフィコ横浜, Domestic conference
Oral presentation

分子間相互作用を活かした機能性分子固体の創製
TAKAHASHI KAZUYUKI
兵庫県立大学大学院物質理学研究科フロンティア機能物質創製センター第３回シンポジウム, Jan. 2017, Japanese, 兵庫県立大学播磨理学キャンパス, Domestic conference
[Invited]
Invited oral presentation

新規電子受容性配位子の合成と性質
平野真理, 高橋一志
若手フロンティア研究会2016, Dec. 2016, Japanese, KobeUniversity, Domestic conference
Poster presentation

新規中性ヘテロレプティック鉄(III)錯体の協同的転移
村田優, 高橋一志, 櫻井敬博, 太田仁
若手フロンティア研究会2016, Dec. 2016, Japanese, KobeUniversity, Domestic conference
Poster presentation

新規中性ヘテロレプティック鉄(III)スピンクロスオーバー錯体の構造と物性
村田優, 高橋一志, 櫻井敬博, 太田仁
第10回物性科学領域横断研究会, Dec. 2016, Japanese, KobeUniversity, Domestic conference
Poster presentation

π電子受容性配位子およびその錯体の合成と物性
平野真理, 高橋一志
第10回物性科学領域横断研究会, Dec. 2016, Japanese, KobeUniversity, Domestic conference
Poster presentation

新規電子受容性配位子およびその錯体の構造と性質
平野真理, TAKAHASHI KAZUYUKI
第7回サイエンスフロンティア研究発表会, Oct. 2016, Japanese, 神戸大学, Domestic conference
Poster presentation

π拡張アニオン性スピンクロスオーバー錯体の合成と性質
村田優, TAKAHASHI KAZUYUKI
第7回サイエンスフロンティア研究発表会, Oct. 2016, Japanese, 神戸大学, Domestic conference
Poster presentation

キレート錯体系クロモトロピックイオン液体の開発
○LAN XUE, 細川仁, 舟浴佑典, MOCHIDA TOMOYUKI, TAKAHASHI KAZUYUKI, SAKURAI TAKAHIRO, OHTA HITOSHI
第７回イオン液体討論会, Oct. 2016, Japanese, 金沢市文化ホール, Domestic conference
Oral presentation

鉄(II)錯体の示す脱溶媒誘起結晶相転移とスピンクロスオーバー協同性との相関
TAKAHASHI KAZUYUKI, 岡井光信, SAKURAI TAKAHIRO, OHTA HITOSHI
第25回有機結晶シンポジウム, Sep. 2016, Japanese, 京都大学, Domestic conference
Oral presentation

新規電子受容性配位子の合成と錯形成の検討
平野真理, TAKAHASHI KAZUYUKI
第10回分子科学討論会, Sep. 2016, Japanese, 神戸ファッションマート, Domestic conference
Poster presentation

新規π拡張スピンクロスオーバーアニオンを基盤とした複合機能性錯体の開発
村田優, TAKAHASHI KAZUYUKI, SAKURAI TAKAHIRO, OHTA HITOSHI
錯体化学会第66回討論会, Sep. 2016, Japanese, 福岡大学, Domestic conference
Poster presentation

新規スピンクロスオーバーアニオンからなるプロトン性錯体の構造と物性
村田優, TAKAHASHI KAZUYUKI, SAKURAI TAKAHIRO, OHTA HITOSHI
第25回有機結晶シンポジウム, Sep. 2016, Japanese, 京都大学, Domestic conference
Poster presentation

新奇アニオン性スピンクロスオーバー錯体のπ拡張誘導体の構造と物性
村田優, TAKAHASHI KAZUYUKI, SAKURAI TAKAHIRO, OHTA HITOSHI, 山本崇史, 栄長泰明, 塩田淑仁, 吉澤一成
第10回分子科学討論会, Sep. 2016, Japanese, 神戸ファッションマート, Domestic conference
Oral presentation

格子整合したヘテロ界面を有するMgO/Mg2Si/MgB2ナノ複合結晶の合成とその電気・磁気特性
UCHINO TAKASHI, 上野勝也, 長嶋廉仁, Seto Yusuke, 松本恵, SAKURAI TAKAHIRO, OHTA HITOSHI, TAKAHASHI KAZUYUKI
日本セラミックス協会第29回秋季シンポジウム, Sep. 2016, Japanese, 広島大学東広島キャンパス, Domestic conference
Oral presentation

ニッケル錯体をカチオンとする磁性サーモクロミックイオン液体の開発
○Lan Xue, MOCHIDA TOMOYUKI, TAKAHASHI KAZUYUKI, SAKURAI TAKAHIRO, OHTA HITOSHI
第10回分子科学討論会, Sep. 2016, Japanese, 神戸ファッションマート, Domestic conference
Poster presentation

スピンクロスオーバー錯体における結晶転移と協同性との相関
岡井光信, TAKAHASHI KAZUYUKI, SAKURAI TAKAHIRO, OHTA HITOSHI, 山本崇史, 栄長泰明
第10回分子科学討論会, Sep. 2016, Japanese, 神戸ファッションマート, Domestic conference
Oral presentation

Spin Crossover in Anionic Weak Ligand-Field Fe(III) Complexes
TAKAHASHI Kazuyuki, KAWAMUKAI Kiko, MURATA Suguru, OKAI Mitsunobu
The 15th International Conference on Molecule-Based Magnets, Sep. 2016, English, Sendai International Center, International conference
Poster presentation

Origin and Functionalization of Novel Anionic Spin Crossover Complexes: Toward Development of the Multifunctional Compounds
Kazuyuki Takahashi
Post-ICMM Symposium2016, Sep. 2016, English, Fukuoka University, International conference
Oral presentation

鉄(II)錯体の示す結晶水脱離に伴う構造転移とスピンクロスオーバー特性変化
OKAI Mitsunobu, TAkAHASHI Kazuyuki, SAKURAI Takahiro, OHTA Hitoshi
日本化学会第96春季年会, Mar. 2016, Japanese, Doshisha University, Domestic conference
Oral presentation

新規アニオン性スピンクロスオーバー錯体に与える配位子置換効果
MURATA Suguru, TAkAHASHI Kazuyuki, SAKURAI Takahiro, OHTA Hitoshi
日本化学会第96春季年会, Mar. 2016, Japanese, Doshisha University, Domestic conference
Oral presentation

ニッケル錯体からなるサーモクロミックイオン液体の合成と物性
○Lan Xue, TAKAHASHI KAZUYUKI, MOCHIDA TOMOYUKI
日本化学会第96春季年会(2016), Mar. 2016, Japanese, 同志社大学京田辺キャンパス, Domestic conference
Oral presentation

銅(I)配位高分子の構造異性に基づく構造転移と発光挙動
OKAI Mitsunobu, TAkAHASHI Kazuyuki, UCHINO Takashi, MOCHIDA Tomoyuki, SAKURAI Takahiro, OHTA Hitoshi, TAKEDA Sadamu
神戸大学研究基盤センター「若手フロンティア研究会2015」, Dec. 2015, Japanese, Kobe University, Domestic conference
Poster presentation

機能性スピンクロスオーバー錯体の開発
TAKAHASHI KAZUYUKI
平成27年度神戸大学物性実験研究室セミナー, Dec. 2015, Japanese, 神戸大学瀧川記念学術交流会館, Domestic conference
[Invited]
Invited oral presentation

アニオン性スピンクロスオーバー錯体に与えるπ拡張効果
MURATA Suguru, TAkAHASHI Kazuyuki, SAKURAI Takahiro, OHTA Hitoshi
神戸大学研究基盤センター「若手フロンティア研究会2015」, Dec. 2015, Japanese, Kobe University, Domestic conference
Poster presentation

Role of Intermolecular Interactions for Functional Spin Crossover Molecular Materials
TAkAHASHI Kazuyuki, FUKUROI Kappei, OKAI Mitsunobu, KAWAMUKAI Kioko
Pacifichem 2015, Dec. 2015, English, Hawaii Convention Center, International conference
Oral presentation

新規電子受容性配位子を用いた銅錯体の構造と性質
OKAI Mitsunobu, TAkAHASHI Kazuyuki, MOCHIDA Tomoyuki, UCHINO Takashi
The 65th Japan Society of Coordination Chemistry Symposium, Sep. 2015, Japanese, Nara Women's University, Domestic conference
Oral presentation

新規アクセプター性配位子を用いた銅錯体の構造と発光挙動
OKAI Mitsunobu, TAkAHASHI Kazuyuki, UCHINO Takashi, MOCHIDA Tomoyuki
Annual Meeting of Japan Society for Molecular Science, Sep. 2015, Japanese, Tokyo Institute of Technology, Domestic conference
Oral presentation

プロトンドナー配位子からなる鉄(II)スピンクロスオーバー錯体の構造と性質
KATO Yu, TAKAHASHI Kazuyuki, SAKURAI Takahiro, OHTA Hitoshi
The 65th Japan Society of Coordination Chemistry Symposium, Sep. 2015, Japanese, Nara Women's University, Domestic conference
Poster presentation

S=1/2擬1次元強磁性鎖CavanciteのESR測定法の開発
OKUBO Susumu, MORI Yutaka, HARA Shigeo, SAKURAI Takahiro, HIJII Keigo, TAKAHASHI Kazuyuki, OHTA Hitoshi
日本物理学会2015年秋季大会, Sep. 2015, Japanese, Kansai University, Domestic conference
Oral presentation

新規アクセプター性配位子を用いた金属錯体の構造と性質
岡井光信, TAKAHASHI KAZUYUKI, SAKURAI TAKAHIRO, OHTA HITOSHI
日本化学会第95春季年会2015, Mar. 2015, Japanese, 公益社団法人日本化学会, 日本大学理工学部船橋キャンパス, Domestic conference
Oral presentation

ハロゲン結合相互作用を導入した鉄(II)ハイブリッド錯体の構造と物性
袋井克平, TAKAHASHI KAZUYUKI, SAKURAI TAKAHIRO, OHTA HITOSHI
日本化学会第95春季年会2015, Mar. 2015, Japanese, 公益社団法人日本化学会, 日本大学理工学部船橋キャンパス, Domestic conference
Oral presentation

磁性アニオンを含有した鉄(II)錯体の構造と磁気物性
岡井光信, 高橋一志, 櫻井敬博, 太田仁, 山本崇史, 栄長泰明
神戸大学研究基盤センター「若手フロンティア研究会2014」, Dec. 2014, Japanese, 神戸, Domestic conference
Poster presentation

ハロゲン結合を持つスピンクロスオーバー伝導体の特異な構造転移
袋井克平, 高橋一志, 櫻井敬博, 太田仁
神戸大学研究基盤センター「若手フロンティア研究会2014」, Dec. 2014, Japanese, 神戸, Domestic conference
Poster presentation

シナジー型スピンクロスオーバーハイブリッド材料の創製
TAKAHASHI KAZUYUKI
短期研究会「有機固体化学の最前線」, Dec. 2014, Japanese, 愛媛大学, Domestic conference
Public discourse

複合機能鉄（Ⅲ）スピンクロスオーバー錯体へのハロゲン置換効果
袋井克平, TAKAHASHI KAZUYUKI, SAKURAI TAKAHIRO, OHTA HITOSHI
第８回分子科学討論会2014, Sep. 2014, Japanese, 広島大学東広島キャンパス, Domestic conference
Oral presentation

金属ジチオレンアニオンを含有する鉄（Ⅱ）スピンクロスオーバー錯体の構造と物性
岡井光信, TAKAHASHI KAZUYUKI, SAKURAI TAKAHIRO, OHTA HITOSHI, 山本崇史, 栄永泰明
第８回分子科学討論会2014, Sep. 2014, Japanese, 広島大学東広島キャンパス, Domestic conference
Oral presentation

プロンドナー性配位子を用いた鉄（Ⅱ）錯体の構造と物性
加藤佑, TAKAHASHI KAZUYUKI, SAKURAI TAKAHIRO, OHTA HITOSHI
第８回分子科学討論会2014, Sep. 2014, Japanese, 広島大学東広島キャンパス, Domestic conference
Poster presentation

Unusual magntetic behaviors of spin-crossover related mononuclear iron compounds
Kazuyuki Takahashi, Kappei Fukuroi, Mitsunobu Okai, Takahiro Sakurai, Hitoshi Ohta, Takashi Yamamoto, Yasuaki Einaga, Masaki Matsuda, Hiroyuki Tajima, Hatsumi Mori, Akiko Nakao, Reiji Kumai, Hironori Nakao, Yoiichi Murakami
The 14th International Conference on Molecule-based Magnets, Jul. 2014, English, St. Petersburg, International conference
Poster presentation

新規プロトン性配位子とその金属錯体の合成と性質
加藤佑, 高橋一志
日本化学会第94春季年会, Mar. 2014, Japanese, 名古屋, Domestic conference
Poster presentation

新規スピンクロスオーバーアニオンからなる複合機能性錯体の合成と性質
高橋一志, 川向希昂, 岡井光信, 櫻井敬博, 太田仁, 山本崇史, 栄長泰明
日本化学会第94春季年会, Mar. 2014, Japanese, 名古屋, Domestic conference
Oral presentation

磁性アニオンを有する鉄(II)スピンクロスオーバー錯体の構造と物性
岡井光信, 高橋一志, 櫻井敬博, 太田仁
日本化学会第94春季年会, Mar. 2014, Japanese, 名古屋, Domestic conference
Oral presentation

ハロゲン結合相互作用を導入したスピンクロスオーバー伝導体の特異な構造転移
袋井克平, 高橋一志, 櫻井敬博, 太田仁
日本化学会第94春季年会, Mar. 2014, Japanese, 名古屋, Domestic conference
Oral presentation

スピンクロスオーバーを示す新規アニオン性鉄(III)錯体の構造と物性
川向希昂, 高橋一志, 櫻井敬博, 太田仁
神戸大学研究基盤センター「若手フロンティア研究会2013」, Dec. 2013, Japanese, 神戸, Domestic conference
Poster presentation

新規な鉄(III)錯アニオンからなるスピンクロスオーバー錯体の構造と物性
高橋一志, 川向希昂, 櫻井敬博, 太田仁, 山本崇史, 栄長泰明
錯体化学会第63回討論会, Nov. 2013, Japanese, 沖縄, Domestic conference
Poster presentation

ハロゲン結合を導入した複合機能性錯体の構造と物性
袋井克平, 高橋一志, 櫻井敬博, 太田仁, 森初果, 山本崇史, 栄長泰明
錯体化学会第63回討論会, Nov. 2013, Japanese, 沖縄, Domestic conference
Oral presentation

スピンクロスオーバー伝導体とその関連物質の外場応答
高橋一志
分子研研究会「光による分子性伝導体の電子相制御」, Oct. 2013, Japanese, 岡崎, Domestic conference
[Invited]
Invited oral presentation

新規アニオン性スピンクロスオーバー錯体の構造と物性
川向希昂, 高橋一志, 櫻井敬博, 太田仁, 山本崇史, 栄長泰明
第7回分子科学討論会, Sep. 2013, Japanese, 京都, Domestic conference
Poster presentation

カチオン–アニオン間相互作用を導入したスピンクロスオーバー複合機能性錯体の構造と物性
袋井克平, 高橋一志, 桜井敬博, 太田仁, 森初果, 山本崇史, 栄長泰明
第7回分子科学討論会, Sep. 2013, Japanese, 京都, Domestic conference
Oral presentation

単核金属錯体を基盤とした多核金属錯体の合成と性質
川向希昂, 高橋一志, 櫻井敬博, 太田仁, 森初果, 榊原俊郎
日本化学会第93春季年会, Mar. 2013, Japanese, 草津, Domestic conference
Oral presentation

ハロゲン結合を導入した複合機能性スピンクロスオーバー錯体の構造と物性
袋井克平, 高橋一志, 櫻井敬博, 太田仁, 森初果
日本化学会第93春季年会, Mar. 2013, Japanese, 草津, Domestic conference
Oral presentation

カチオン―アニオン間分子間相互作用による協同的スピン転移と磁性スイッチング
高橋一志
新学術領域研究「分子自由度が拓く新物質科学」第 7 回領域会議, Mar. 2013, Japanese, 東京, Domestic conference
Nominated symposium

Cu(TCNQ)のヨウ素吸蔵能の評価
宮尾晃司, 船曳彰, TAKAHASHI KAZUYUKI, MOCHIDA Tomoyuki
日本化学会第93春季年会, Mar. 2013, Japanese, 滋賀, Domestic conference
Oral presentation

分子間相互作用に着目した双安定物質の開発と物性評価
高橋一志
九州大学先導物質化学研究所「先導研セミナー」, Feb. 2013, Japanese, 福岡, Domestic conference
Public discourse

単核錯体を出発物質とした多核錯体の合成と物性
川向希昂, 高橋一志, 櫻井敬博, 太田仁
兵庫県立大学大学院物質理学研究科フロンティア機能物質創製センターシンポジウム New materials Science from Hyogo, Dec. 2012, Japanese, 姫路, Domestic conference
Poster presentation

単核金属錯体配位子を基盤とした多核金属錯体の合成と性質
川向希昂, 高橋一志
神戸大学研究基盤センター「若手フロンティア研究会2012」, Dec. 2012, Japanese, 神戸, Domestic conference
Poster presentation

スピンクロスオーバーによる電気伝導性制御
高橋一志
兵庫県立大学大学院物質理学研究科フロンティア機能物質創製センターシンポジウム New materials Science from Hyogo, Dec. 2012, Japanese, 姫路, Domestic conference
Oral presentation

カチオンーアニオン間相互作用を導入した複合機能性スピンクロスオーバー錯体の構造と物性
袋井克平, 高橋一志, 櫻井敬博, 太田仁
兵庫県立大学大学院物質理学研究科フロンティア機能物質創製センターシンポジウム New materials Science from Hyogo, Dec. 2012, Japanese, 姫路, Domestic conference
Poster presentation

Pressure and Photo Responses of Spin Crossover Related Compounds
Kazuyuki Takahashi, Kappei Fukuroi, Masaki Matsuda, Hatsumi Mori, Hiroyuki Tajima, Takashi Yamamoto, Yasuaki Einaga, Tomoyuki Mochida, Takahiro Sakurai, Hitoshi Ohta, Osamu Sato
International Symposium on Materials Science Opened by Molecular Degrees of Freedom (MDF2012), Dec. 2012, English, Miyazaki, International conference
Poster presentation

非磁性不純物置換したS=1/2 ２本鎖スピン梯子物質(pipdH)2(Cu1-xZnx)Br4のテラヘルツESR測定
横山千織, 高橋直己, 張衛民, 大久保晋, 太田仁, 櫻井敬博, 松岡英一, 菅原仁, 高橋一志, 菊池彦光
第22回(平成24年度)日本赤外線学会研究発表会, Nov. 2012, Japanese, 日本赤外線学会, Domestic conference
Poster presentation

鉄チオラート錯体からなるサーモクロミックイオン液体の開発
稲垣尭, TAKAHASHI KAZUYUKI, MOCHIDA Tomoyuki, SAKURAI TAKAHIRO, OHTA HITOSHI
日本化学会第92春季年会, Mar. 2012, Japanese, 日本生化学会, 横浜, Domestic conference
Oral presentation

固相反応によるTCNQ系電荷移動塩の合成と物性評価
船曵彰, TAKAHASHI KAZUYUKI, MOCHIDA Tomoyuki, SAKURAI TAKAHIRO, OHTA HITOSHI, 森初果, 売市幹大
日本化学会第92春季年会, Mar. 2012, Japanese, 日本生化学会, 横浜, Domestic conference
Oral presentation

局在スピンを有する単核鉄錯体の構造と磁性
TAKAHASHI Kazuyuki, 森初果, 田島裕之, 山本崇史, 栄長泰明, 佐藤治
日本化学会第92春季年会, Mar. 2012, Japanese, 横浜, Domestic conference
Oral presentation

外場応答型分子性伝導体の開発
TAKAHASHI Kazuyuki
熊本大学プロジェクトゼミナール, Mar. 2012, Japanese, 熊本, Domestic conference
[Invited]
Invited oral presentation

Unusual Magnetic Behavior of a Mononuclear Fe(III) Complex with a Phthalocyanione Anion
TAKAHASHI Kazuyuki, H. Mori, M. Matsuda, T. Yamamoto, Y. Einaga, A. Nakao, R. Kumai, H. Nakao, Y. Murakami, H. Tajima, O. Sato
MDF International Mini-Workshop: Development of Molecular Degree of Freedom towards Novel Functionality, Nov. 2011, English, Kobe, Japan, International conference
Oral presentation

Reversible Iodine Absorption of Alkali-TCNQ Salts Accompanying Drastic Changes of Physical Properties
A. Funabiki, MOCHIDA Tomoyuki, TAKAHASHI Kazuyuki, H. Mori
MDF International mini-Workshop "Development of Molecular Degree of Freedom towards Novel Functionality", Nov. 2011, English, International conference
Poster presentation

Development of Multifunctional Molecular Solids Coupled to a Spin Crossover Conversion
TAKAHASHI Kazuyuki
MDF International Workshop: Open-shell Organic Molecules-Synthesis and Electronic Structure Freedom-, Oct. 2011, Japanese, Osaka, Japan, International conference
[Invited]
Invited oral presentation

Magnetic Splitting of Mössbauer Spectra in the Mononuclear Fe(III) Complex with a Phthalocyanine Anion
TAKAHASHI Kazuyuki, H. Mori, M. Matsuda, T. Yamamoto, Y. Einaga, A. Nakao, R. Kumai, H. Nakao, Y. Murakami, M. Kimata, H. Tajima, O. Sato
International Conference on the Applications of the Mössbauer Effect, Sep. 2011, English, Kobe, Japan, International conference
Oral presentation

■ Affiliated Academic Society

近畿化学協会

錯体化学会

Japan Society of Molecular Science

The Society of Synthetic Organic Chemistry

The Physical Society of Japan

The Chemical Society of Japan

■ Research Themes

機能性金属錯体の分子間相互作用解析に基づく新規物性の開拓
高橋一志
日本学術振興会, 科学研究費助成事業, 基盤研究(C), 神戸大学, 01 Apr. 2025 - 31 Mar. 2028

機能性金属錯体における分子間相互作用の役割とその応用
高橋一志
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), Kobe University, 01 Apr. 2019 - 31 Mar. 2022

Study on electronic-property control of CDW nanoribbons
Eda Kazuo
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), Kobe University, 01 Apr. 2014 - 31 Mar. 2017
Molybdenum blue bronze (MBB) is a CDW (charge density wave) material and its nanosized particles are expected to exhibit good photo-response and ballistic electron conduction. We revealed the formation mechanism of MBB nanoribbons and succeeded in finding out suitable conditions of their single-phase or nearly single-phase preparations. Furthermore, we succeeded in preparing various kinds of partially reduced alpha-MoO3 nanoribbons, the formation of which was found in this research program, and revealed they exhibit interesting properties for various gas detections.
Competitive research funding

Elucidation of the bistability of metal complexes and their applications to control electronic properties of molecular solids
Takahashi Kazuyuki, OHTA Hitoshi, MORI Hatsumi
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), Kobe University, 01 Apr. 2013 - 31 Mar. 2017, Principal investigator
Spin crossover (SCO) complexes have attracted much attention as one of molecular switching materials induced by temperature, pressure, and light. In order to introduce intermolecular interactions between a cation and anion, multifunctional SCO compounds from the SCO cation and magnetic anion with halogen-bonding interactions were developed. The structural and magnetic characterizations revealed that it was successful to control a paramagnetic-nonmagnetic transformation of the magnetic anion by SCO. We also discovered completely novel SCO compounds featuring N2O4 and N3O3 donor atom sets which have never been reported. The systematic studies revealed that not isotropic interactions such as Coulomb and dispersion interactions but anisotropic intermolecular interactions such as π-π interactions played a crucial role in the SCO cooperativity which reflects the correlation between the spin-states of the neighboring SCO molecules.
Competitive research funding

Preparation and Properties of Ionic Liquids from Metal Complexes
Mochida Tomoyuki, TAKAHASHI Kazuyuki, KUWAHARA Daisuke, TAKAHASHI Masashi, FUJIMORI Hiroki, KATO Keisuke, HAYASHI Masahiko
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), Kobe University, 01 Apr. 2012 - 31 Mar. 2016
Functional metal-containing ionic liquids were synthesized from various cationic metal complexes. First, ionic liquids exhibiting vapochromic, magnetic, and other properties were developed from chelate complexes. Second, a series of ionic liquids were synthesized from metallocenium complexes, and their physical properties and chemical reactivities investigated. Correlations between the crystal structures and thermal properties of metallocenium salts were also investigated.
Competitive research funding

Control of intermolecular interaction for novel electronic functionalities
MORI Hatsumi, YAMADA Jyun-ichi, NISHIKAWA Hiroyuki, KUROKI Kazuhiko, TAKAHASHI Kazuyuki, UEDA Akira, ISONO Takayuki, AKUTSU Hiroki, AIZAWA Hirohito
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area), Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area), The University of Tokyo, 13 Nov. 2008 - 31 Mar. 2013
As the results in the aim for novel electronic functionalities by controlling intermolecular interaction, (1) novel molecular superconductors competitive with charge-ordered states were developed, (2) the theoretical analysis of the obtained superconductor proposed the symmetry of superconductivity. (3) Novel magnetic conductors and spin crossover complexes were developed by coordination of functional redox molecules to paramagnetic metals. (4) Novel purely organic single-component conductors and quantum spin liquid crystals were developed by coupling hydrogen-bonded protons and itinerant electrons.

Research of the nonlinear conduction and hidden metastable state of organic conductor beta-type DMeET salt
MORI Hatsumi, TAKAHASHI Kazuyuki, MORI Takehiko, MORI Takehiko
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), The University of Tokyo, 2008 - 2011
The response of electric field has been investigated for the molecular conductorυ-(meso-DMeET) 2PF6, which is in the peculiar electronic state of both checkerboard-type charge ordering and dimer-Mott at low temperatures. The titled crystal shows the large nonlinear conduction and the electric-field induced metastable state. This response is quick in proportional to(electric field)^3. The measurement of raman spectroscopy synchronized to the pulsed electric field suggests the melting of the charge ordering in the metastable state with the intermediate resistivity.

Development of Novel Molecular Materials Responsive to External Stimuli
TAKAHASHI Kazuyuki
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B), Grant-in-Aid for Young Scientists (B), The University of Tokyo, 2007 - 2008
温度・圧力・光・電場などの外場に応答する新しい分子性物質を開発するために、双安定分子であるスピンクロスオーバー分子を分子性伝導体や分子性誘電体へ導入することにより、スピンクロスオーバーと伝導性・誘電性のカップルしたスピンクロスオーバー伝導体や誘電体の開発に成功した。そのカップリングのメカニズムの検討からスピンクロスオーバー分子間に働く強い分子間相互作用が複合機能性を実現するための重要なポイントであることを明らかにした。

新奇磁性分子性導体の開発
高橋一志
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Priority Areas, Grant-in-Aid for Scientific Research on Priority Areas, The University of Tokyo, 2006 - 2007
磁性分子性導体の多くはπ電子ドナーと遷移金属磁性アニオンからなる伝導体であり、伝導電子と局在スピンとの間の磁気的相互作用は結晶構造に大きく依存しているため、π電子ドナー分子の設計からその磁気的相互作用を予測することができないのが現状である。そこで(1)π電子ドナーに安定有機ラジカルを結合させることにより、分子内での磁気的相互作用が期待される磁性分子性導体の開発(2)局在スピンとして鉄スピンクロスオーバーイオンを有する外場応答型磁性分子性導体の開発という二通りのアプローチで新奇磁性伝導体の開発を行ってきた。本年度は(1)昨年度開発した安定有機ラジカルPROXYL縮環π電子ドナーPROXYL-STFのπ共役系を拡張したPROXYL-DS-TTP誘導体の合成とキャラクタリゼーションに成功した。電解酸化により得られたカチオンラジカル塩(PROXYL-DS-TTP)BF_4・PhCIの結晶構造解析からPROXYLラジカルの存在が示唆され、この系において今後安定有機ラジカルを有するドナーからなる分子性金属への展開が期待される。(2)昨年度報告した光応答型スピンクロスオーバー伝導体[Fe^(qsal)_2][Ni(dmit)_2]_3-CH_3CN-H_2Oの類縁体[Fe^(qnal)_2][Pd(dmit)_2]_5-acetoneがM(dmit)_2錯体として二例目となるスピンクロスオーバー伝導体であり、その低温相と高温相の結晶構造解析からスピンクロスオーバーによるカチオンの構造変化ばかりではなく、スピンクロスオーバーカチオン間の強い分子間相互作用による協同的な一軸格子変調が伝導性の変化を誘起しているというメカニズムを明らかにすることができた。このような分子間相互作用による協同効果が双安定状態の実現に対して重要であり、今後伝導性以外の電子物性制御への展開が期待される結果である。

Research of Competition and Coexistence of Charge-ordered and Superconducting States in Novel Organic Superconductors
MORI Hatsumi, TAKAHASHI Kazuyuki
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), The University of Tokyo, 2005 - 2007
In order to investigate the relationship between charge ordering and superconductivity for novel organic superconductor beta-(meso-DMBEDT-TTF)_2PF_6, the detailed measurements of electrical resistivity and magnetoresistivity have been carried out. Our results are followings. (1) Determination of superconducting state by measurements of electrical and magnetoresistivity under pressureThe detailed measurements of electrical resistivity under pressure revealed that the resistance drop of observed at Tc(onset) = 4.6 K under relatively low pressure 0.6 kbar, whose superconductivity was confirmed by applying magnetic field. The superconducting phase extends widely to Tc=2.6K under 5.2 kbar. (2) Determination of charge-ordered state by temperature and magnetic field dependences of magnetoresistance under pressure The temperature dependence of resistivity for beta-(meso-DMBEDT-TTF)_2PF_6 is peculiar under 0.6 kbar; the resistivity minimum is observed at 60K, the increase of resistivity by 8 times with lowering temperature, and the sudden drop of resitivity is observed at 4.6K. The raman spectroscopy under pressure demonstrates that the resistivity increase is originated by charge ordering (CO). In this CO region, large magnetoresistance was observed, its increasing rate (ΔR/R(0T)) increases with applying pressure, and in even the metallic state at low temperatures, the magnetoresistance can be observed. Therefore, the illustrated P-T phase diagram reveals that the static and dyanimical CO states exist in neighbouring of superconducting state, which is the first experimental observation among molecular superconductors.

分子機能性材料
ＪＳＴ戦略的創造研究推進制度（研究チーム型）（戦略的基礎研究推進事業：ＣＲＥＳＴ）, 2003 - 2007
Competitive research funding

Molecular-based Functional Materials
JST Basic Research Programs (Core Research for Evolutional Science and Technology :CREST), 2003 - 2007
Competitive research funding

分子性導体におけるカルコゲン原子間相互作用の結晶構造制御への応用
高橋一志
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for JSPS Fellows, Grant-in-Aid for JSPS Fellows, Kyoto University, 1999 - 2000

SEARCH

TAKAHASHI KazuyukiGraduate School of Science / Division of ChemistryAssociate Professor

Researcher basic information

Research activity information

TAKAHASHI Kazuyuki
Graduate School of Science / Division of Chemistry
Associate Professor