2006 Fiscal Year Final Research Report Summary
Development of Multifunctional Organic Materials (Superconductors, Spin Liquids, Novel Phase Transition Systems, etc)
| Project/Area Number |
15205019
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Functional materials chemistry
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| Research Institution | Kyoto University |
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Principal Investigator |
SAITO Gunzi Kyoto University, Graduate School of Science, Professor, 大学院理学研究科, 教授 (40132724)
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| Co-Investigator(Kenkyū-buntansha) |
YAMOCHI Hideki Kyoto University, Research Center for Low Temperature and Materials Sciences, Professor, 低温物質科学研究センター, 教授 (20182660)
MAESATO Mitsuhiko Kyoto University, Graduate School of Science, Assistant Professor, 大学院理学研究科, 助手 (60324604)
OTSUKA Akihiro Kyoto University, Research Center for Low Temperature and Materials Sciences, Assistant Professor, 低温物質科学研究センター, 助手 (90233171)
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| Project Period (FY) |
2003 – 2006
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| Keywords | Organic Superconductor / Uniaxial Strain / Metal-Insulator Transition / Photo-Induced Phase Transition / Ionic Liquid / Nucleobase-Conductor / Amphoteric Compound / Fullerene |
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| Research Abstract |
Systematic uniaxial strain study of κ-(BEDT-TTF)_2X revealed the relationship between the anisotropy of the triangular spin lattice and superconducting transition temperature. We discovered the spin liquid behavior in the Mott insulator κ-(BEDT-TTF)_2Cu_2(CN)_3 which has the nearly regular triangular spin lattice.
We demonstrated the ultra-fast and highly efficient photo-induced metal-insulator transition system in (EDO-TTF)_2PF_6, where one photon converts ca. 500 molecules to highly conducting state within 1.5 ps. TP-EDOT, a new donor having thiopyrane and dithiol rings, gave a Mott insulator exhibiting a unique magnetic structure.
A (C_<60>^-)_2 dimer bound by two C-C bonds was prepared for the first time in an ionic {(MDABCO^+)・Co^<II>TMPP}_<2・ (C_<60>^-)_2・(C_6H_4Cl_2)_<2.5>・(C_6H_5CN)_<1.5>, the magnetic behavior of which was interpreted by the singlet-triplet model. A reversible formation of a coordination Co-C(C_<60>^-) bond was found in {(MDABCO^+)・Co^<II>OEP・(C_<60>^-)}・ (C_6H_
… More
5CN)_χ・(C_6H_4Cl_2)_<1-χ>, The bond formation was accompanied by a paramagnetic-diamagnetic transition.
1-Alkyl(C_nH_<2n+1>)-3-methylimidazolium (C_nMI) cations afforded 8 and 4 paramagnetic ionic liquids based on Fe^<III>X_4 (X : Cl, Br) anions and organic anions with TEMPO radical moiety, respectively. Au^I(CN)_2 salts composed of C_nMI cations having elongated alkyl chains (n 【greater than or equal】 4) emitted blue lights in liquid form at room temperature. Also, we obtained a new C_4MI salt formed with pyrene-based anion, which melts at 43 ℃ and exhibits a blue-green emission in the liquid state.
We prepared indoline-TCNQ intramolecular charge transfer compounds having various substituents to establish the methodologies to control and estimate their charge transfer degree. Chemical modification on pyrimido-fused TTF derivatives yielded conductive single-component organic compounds. Complex formation between cytosine and TCNQ derivatives afforded charge transfer salts exhibiting self-assembled structures and high conductivity. Less
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[Journal Article] Charge disproportionation with metallic conductivity in new ET salt, (ET)_3(AuBr_2)_2(AuBr_4)_2(solv)_x, having a peculiar crystal structure.2007
Author(s)
M.Sakata, M.Maesato, G.Saito, T.Yamamoto, K.Yakushi, S.S.Khasanov, N.G.Spitsina, A.D.Dubrovskii, E.B.Yagubskii, P.Deplano, M.L.Mercuri
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Journal Title
Multifunctional Conducting Molecular Materials
Pages: 91-96
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Synthesis, crystal structures, magnetic properties and photoconductivity of C_<60> and C_<70> complexes with metal dialkyldithiocarbamates M(R_2dtc)_x, where M=Cu^<II>, Cu^I, Ag^I, Zn^<II>, Cd^<II>, Hg^<II>, Mn^<II>, Ni^<II>, and Pt^<II>; R=Me, Et, and nPr.2006
Author(s)
D.V.Konarev
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Journal Title
European Journal of Inorganic Chemistry (9)
Pages: 1881-1895
Description
「研究成果報告書概要(和文)」より
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[Journal Article] Synthesis, crystal structures, magnetic properties and photoconductivity of C_<60> and C_<70> complexes with metal dialkyldithiocarbamates M(R_2dtc)_x, where M=Cu^<II>, Cu^I, Ag^I, Zn^<II>, Cd^<II>, Hg^<II>, Mn^<II>, Ni^<II>, and Pt^<II> ; R=Me, Et, and nPr.2006
Author(s)
D.V.Konarev, A.Y.Kovalevsky, S.S.Khasanov, G.Saito, D.V.Lopatin, A.V.Umrikhin, A.Otsuka, R.N.Lyubovskaya
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Journal Title
Eur. J. Inorg. Chem. (9)
Pages: 1881-1895
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Phenalenyl-based highly conductive molecular systems with hydrogen-bonded networks : Synthesis, physical properties, and crystal structures of 1,3-and 1,6-diazaphenalenes, and their protonated salts and charge-transfer complexes with TCNQ.2006
Author(s)
T.Murata, Y.Morita, K.Fukui, K.Tamaki, H.Yamochi, G.Saito, K.Nakasuji
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Journal Title
Bull. Chem. Soc. Jpn. 79(6)
Pages: 894-913
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Gigantic photoresponse in 1/4-filled-band organic salt (EDO-TTF)_2PF_6.2005
Author(s)
M.Chollet, L.Guerin, N.Uchida, S.Fukaya, H.Shimoda, T.Ishikawa, K.Matsuda, T.Hasegawa, A.Ota, H.Yamochi, G.Saito, R.Tazaki, S.Adachi, S.Koshihara
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Journal Title
Science 307(5706)
Pages: 86-89
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Synthesis, crystal structure and photoconductivity of new molecular complex of C60 with tetrabenzo(1,2-bis [4H-thiopyran-4-ylidene]ethene) : Bz_4BTPE C_<60>.2005
Author(s)
D.V.Konarev, D.V.Lopatin, V.V.Rodaev, A.V.Umrikhin, S.S.Khasanov, G.Saito, K.Nakasuji, A.L.Litvinov, R.N.Lyubovskaya
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Journal Title
J. Phys. Chem. Solids 66(5)
Pages: 711-715
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Hydrogen-bonded networks in organic conductors : Crystal structures and electronic properties of charge-transfer salts of tetracyanoquinodimethane with 4,4'-biimidazolium having multiprotonated states.2005
Author(s)
Y.Morita, T.Murata, K.Fukui, S.Yamada, K.Sato, D.hiomi, T.Takui, H.Kitagawa, H.Yamochi, G.Saito, K.Nakasuji
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Journal Title
J. Org. Chem. 70(7)
Pages: 2739-2744
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Ultrafast photoinduced metal-insulator transition in 1/4 filled organic crystal (EDO-TTF)_2PF_6.2005
Author(s)
M.Chollet, L.Guerin, N.Uchida, S.Fukaya, H.Shimoda, T.Ishikawa, K.Matsuda, T.Hasegawa, A.Ota, H.Yamochi, G.Saito, R.Tazaki, S.Adachi, S.Koshihara
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Journal Title
J. Phys., Conference Ser. 21
Pages: 130-135
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Phase transition in (EDO-TTF)_2PF_6 : Domain growth in the thermal hysteresis and ultra-fast photoinduced effects.2005
Author(s)
L.Guerin, D.Glijer, N.Moisan, M.Lorenc, M.Buron-Le Cointe, E.Collet, H.Cailleau, A.Ota, G.Saito, X.Shao, H.Yamochi, M.Chollet, K.Onda, T.Ishikawa, S.Koshihara
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Journal Title
J. Phys., Conference Ser. 21
Pages: 149-154
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] A purely organic molecular metal based on a hydrogen-bonded charge-transfer complex : Crystal structure and electronic properties of TTF-imidazole-ρ-chloranil.2004
Author(s)
T.Murata, Y.Morita, K.Fukui, K.Sato, D.Shiomi, T.Takui, M.Maesato, H.Yamochi, G.Saito, K.Nakasuji
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Journal Title
Angew. Chem., Int. Ed 43(46)
Pages: 6343-6346
Description
「研究成果報告書概要(欧文)」より
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