Development of Novel Molecular Materials Responsive to External Stimuli

2008 Fiscal Year Final Research Report

• Project/Area Number: 19750107
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Functional materials chemistry
• Research Institution: The University of Tokyo
• Principal Investigator: TAKAHASHI Kazuyuki The University of Tokyo, 物性研究所, 助教 (60342953)
• Project Period (FY): 2007 – 2008
• Keywords: スピンクロスオーバー錯体 / 電気伝導性 / 誘電性 / 複合機能性 / 外場応答 / プロトニクス / 結晶構造 / 相転移

Research Abstract

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。

Research Products

• [Journal Article] Evidence of the chemical uniaxial strain effect on electrical conductivity in the spin-crossover conducting molecular system: [Fe^<III>qnal)_2][Pd(dmit)_2]_5・Acetone (2008)
  • Author(s): K. Takahashi, H.-B. Cui, Y. Okano, H. Kobayashi, H. Mori, H. Tajima, Y. Einaga, O. Sato
  • Journal Title: J. Am. Chem. Soc. 130 Pages: 6688-6689
  • Peer Reviewed
• [Journal Article] Dielectric response and electric-field-induced metastable state in an organic conductor β-(meso-DMBEDT-TTF)_2PF_6 (2008)
  • Author(s): S. Niizeki, F. Yoshikane, K. Kohno, K Takahashi, H. Mori, Y. Bando, T. Kawamoto, T. Mori
  • Journal Title: J. Phys. Soc. Jpn. 77 Pages: 073710 (4 pages)
  • Peer Reviewed
• [Journal Article] Syntheses, crystal structures, and physical properties of copper complexes with dimethylthio-pyrazino-selenathiafulvalene (=Dmt-Pyra-STF) as ligand: trans-CuCl_2(Dmt-Pyra-STF)_2 and Cu_2Br_<2.5>(Dmt-Pyra-STF) (2008)
  • Author(s): S. Ichikawa, K. Takahashi, H. Mori, J. Yamaura
  • Journal Title: Solid State Sci. 10 Pages: 1724-1728
  • Peer Reviewed
• [Journal Article] Intrinsic carrier doping in antiferromagnetically interacted supramolecular copper complexes with (pyrazino)tetrathiafulvalene (pyra-TTF) as the ligand, [Cu^<TT>Cl_2(pyra-TTF)] and (pyra-TTF)_2[Cu^T_3Cl_4(pyra-TTF)] (2008)
  • Author(s): S. Ichikawa, S. Kimura, K. Takahashi, H. Mori, G. Yoshida, Y. Manabe, M. Matsuda, H. Tajima
  • Journal Title: Inorg. Chem. 47 Pages: 4140-4145
  • Peer Reviewed
• [Journal Article] Metal-organic frameworks from copper dimers with cis- and trans-1,4-cyclohexanedicarboxylate and cis,cis-1,3,5-cyclohexanetricarboxylate (2007)
  • Author(s): H. Kumagai, M. Akita-Tanaka, K. Inoue, K, Takahashi, H. Kobayashi, S. Vilminot, M. Kurmoo
  • Journal Title: Inorg. Chem. 46 Pages: 5949-5956
  • Peer Reviewed
• [Journal Article] (^nBu_4N)[Ni(dmstfdt)_2]: A planar nickel coordination complex with an extended-TTF ligand exhibiting metallic conduction, metal-insulator transition, and weak ferromagnetism (2007)
  • Author(s): E. Fujiwara, K. Yamamoto, M. Shimamura, B. Zhou, A. Kobayashi, K. Takahashi, Y Okano, H. Cui, H. Kobayashi
  • Journal Title: Chem. Mater. 19 Pages: 553-558
  • Peer Reviewed
• [Journal Article] Mechanism of reversible spin transition with a thermal hysteresis loop in [Fe^<III>(qsal)_2][Ni(dmise)_2]・2CH_3CN: Selenium analogue of the precursor of an Fe(III) spin-crossover molecular conducting system
  • Author(s): K. Takahashi, H. Mori, H. Kobayashi, O. Sato
  • Journal Title: Polyhedron 2009 (in press)
  • Peer Reviewed
• [Presentation] プロトン性対アニオンを持つスピンクロスオーバー錯体の構造と物性 (2009)
  • Author(s): 高橋一志, 森初果, 松田真生, 田島裕之, 花島太郎, 栄長泰明, 山本薫, 薬師久弥, 佐藤治
  • Organizer: 日本化学会第89春季年会
  • Place of Presentation: 日本大学理工学部(船橋)
  • Year and Date: 2009-03-28
• [Presentation] 鉄(III)スピンクロスオーバー錯体に対する圧力効果の検討 (2009)
  • Author(s): 佐藤哲也, 高橋一志, 森初果, 松田真生, 田島裕之, 佐藤治
  • Organizer: 日本化学会第89春季年会
  • Place of Presentation: 日本大学理工学部(船橋)
  • Year and Date: 2009-03-27
• [Presentation] 鉄(III)錯体におけるスピン状態の圧力効果 (2008)
  • Author(s): 佐藤哲也, 高橋一志, 森初果, 田島裕之, 佐藤治
  • Organizer: 分子科学総合討論会2008
  • Place of Presentation: 博多
  • Year and Date: 2008-09-27
• [Presentation] Development of Spin-Crossover Molecular Conducting Systems (2008)
  • Author(s): K. Takahashi, H.-B. Cui, Y. Okano, H. Kobayashi, H. Mori, M. Matsuda, H. Tajima, Y. Einaga, O. Sato
  • Organizer: The Xlth International Conference on Molecule-based Magnets
  • Place of Presentation: Florence (Italy)
  • Year and Date: 2008-09-22
• [Presentation] Crystal Structures and Physical Properties of Spin-crossover Molecular Conductors (2008)
  • Author(s): K. Takahashi, H.-B. Cui, Y. Okano, H. Kobayashi, H. Mori, H. Tajima, Y Einaga, O. Sato
  • Organizer: IUCr Satellite Meeting 2008
  • Place of Presentation: Senri Life Science Center (Osaka)
  • Year and Date: 2008-08-21
• [Presentation] 複合機能性鉄(III)スピンクロスオーバー錯体の物性と光応答 (2008)
  • Author(s): 高橋一志, 崔亨波, 岡野芳則, 小林速男, 森初果, 田島裕之, 栄長泰明, 佐藤治
  • Organizer: 第21回配位化合物の光化学討論会
  • Place of Presentation: 北里大学(相模原)
  • Year and Date: 2008-08-07
• [Presentation] The Role of Supramolecular Interactions between Spin-crossover Cations in the Spin-crossover Conductors (2008)
  • Author(s): K. Takahashi, H.-B. Cui, Y. Okano, H. Kobayashi, H. Mori, Y. Einaga, O. Sato
  • Organizer: International Symposium on Molecular Conductors 2008
  • Place of Presentation: Institute for Molecular Science (Okazaki)
  • Year and Date: 2008-07-24
• [Presentation] スピンクロスオーバー現象による固体電子物性の制御 (2008)
  • Author(s): 高橋一志, 大知弘典, 森初果, 佐藤治
  • Organizer: 日本化学会第88春季年会
  • Place of Presentation: 立教大学(池袋)
  • Year and Date: 2008-03-27
• [Presentation] Electrical Conductivity Modulation Induced by the Chemical Pressure Effect Associated with a Spin-crossover Phenomenon (2007)
  • Author(s): K. Takahashi, H.-B. Cui, Y. Okano, H. Kobayashi, H. Mori, Y. Einaga, O. Sato
  • Organizer: The 2007 International Symposium on Crystalline Organic Metals, Superconductors and ferromagnets
  • Place of Presentation: Pefiiscola (Spain)
  • Year and Date: 2007-09-25
• [Remarks] 「有機単結晶の作製方法と電気伝導度計測」高橋一志,大阪大学有機エレクトロニクス研究会Winter School,神戸,2008年12月18日
• [Remarks] 「外場応答型分子性物質の開発」高橋一志,JST-CREST「ナノ構造体材料」領域 総括ミーティング,葉山,2008年3月2日