| Project/Area Number |
24655110
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Functional materials chemistry
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| Research Institution | Hokkaido University |
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Principal Investigator |
INABE Tamotsu 北海道大学, 理学(系)研究科(研究院), 教授 (20168412)
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| Co-Investigator(Renkei-kenkyūsha) |
HARADA Jun 北海道大学, 大学院理学研究院, 准教授 (00313172)
TAKAHASHI Yukihiro 北海道大学, 大学院理学研究院, 助教 (40443197)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | 電荷移動錯体 / 分子運動 / 極性反転 / 極性アクセプタ / 相転移 / 極性ドナー / 強誘電体 |
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| Research Abstract |
In this study, mixed-stacked charge-transfer (CT) complex crystals in which polar components have a certain degree of freedom of dynamic rotation were targeted. In such crystals, dielectric response is expected to appear due to flip-flop motion of the polar molecules.
We prepared several CT complexes with disc-like polar acceptors such as TCPA (tetrachlorophthalic anhydride). In some of the crystals, rotational motion of the acceptor in the high-temperature phase was ceased step-wise at the phase transitions with decreasing temperature, and in the low-temperature phase the crystal symmetry was found to change to a polar space group. Some new CT complexes were also prepared using polar donor components.
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