| Project/Area Number |
61550027
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
Applied materials
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| Research Institution | Institute for Molecular Science |
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Principal Investigator |
MITANI Tadaoki Institute for Molecular Science,Associated Professor, 分子科学研究所, 助教授 (50010939)
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| Co-Investigator(Kenkyū-buntansha) |
INABE Tamotsu Institute for Molecular Science,Research Associate, 分子科学研究所, 助教授 (20168412)
NASU Keiichiro Institute for Molecular Science,Associated Professor, 分子科学研究所, 助教授 (90114595)
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| Project Period (FY) |
1986 – 1987
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| Project Status |
Completed (Fiscal Year 1987)
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| Budget Amount *help |
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1987: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1986: ¥1,500,000 (Direct Cost: ¥1,500,000)
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| Keywords | Charge-transfer complex / proton transfer / proton tunneling / hydrogen bonding soliton / domain wall / 機能性素子 / ソリトン |
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| Research Abstract |
In order to elucidate the fundamental aspect of the cooperative phenomena of the electron-and proton transfer in solids,hydrogen-bonded charge-transfer crystals have been investigated by optical spectroscopy in a wide spectral range from the infrared to UV region.In guinhydrone charge-transfer crystals,whch have a prototype of the 2-dimensional proton lattice,a new phase transition associated with the proton tunneling in the proton lattice has been discovered as a result of application of hydrostatic pressure.This provides a uniaue opportunity for studying the dynamics of the electron-proton interaction in solids.In fact,this phase transition exhibits striking changes in optical properties of the chargetransfer exction as well as the O-H stretching vibrational mode.The temperature and pressure-induced changesof the IR spectra can be accounted for in terms of the proton tunneling through a barrier of the H-bonded double-well potential.These characteristic features suggest the possibility of the formation of the protonic domain walls or solition-like kinks in the electron-proton transfer state.Such a new type of elementaly exaitations in solids allows rs to expand the subject of thi research to design of a new molecular function in charge-transfer complexes.
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