1994 Fiscal Year Final Research Report Summary
Studies for molecular electronic devices based on light-induced phase transitions
| Project/Area Number |
05453051
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
機能・物性・材料
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| Research Institution | The University of Tokyo |
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Principal Investigator |
AWAGA Kunio Univ. of Tokyo Col.of Arts & Sci. Associate Prof., 教養学部, 助教授 (10202772)
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| Co-Investigator(Kenkyū-buntansha) |
OSHIO Hiroki Univ. of Tohoku. Faculty of Sci. Associate Prof., 理学部, 助教授 (66017865)
SUGAWARA Tadashi Univ. of Tokyo. Col.of Arts & Sci. Prof., 教養学部, 教授 (50124219)
OKUNO Tsunehisa Univ. of Tokyo. Col.of Arts & Sci. Research Associate, 教養学部, 助手 (50251327)
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| Project Period (FY) |
1993 – 1994
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| Keywords | Metal Complexes / Magnetism / Optical Properties / Molecular Devices |
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| Research Abstract |
(CH_3)_2CHNH_3^+CuCl_3^- is known to show a thermochromic phase transition at about 50ﾟC,where the magnetic interaction between the Cu^<2+> ions drastically changes from antiferromagnetic to ferromagnetic. We have measured temperature dependence of the UV-VIS-NIR spectrum of this material, and have found that two bands which appear at 1.3 and 2.2eV at room temperature, completely disappear above the phase transition temperature. Radiation of the two bands were carried out with two kinds of lasers, but observation of the light-induced phase transition was unsuccessful. In future, we need an advanced strategy where the potential surface of the excited state is considered.
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