2022 Fiscal Year Final Research Report
Charge transfer in conjugated radical ion dimers induced by infrared light and its application to organic devices
| Project/Area Number |
20K05421
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 32010:Fundamental physical chemistry-related
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| Research Institution | Aoyama Gakuin University |
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Principal Investigator |
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| Project Period (FY) |
2020-04-01 – 2023-03-31
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| Keywords | 共役ラジカルイオン二量体 / 赤外光誘起 / 電子－分子振動相互作用 / 電荷移動 / 赤外吸収分光 / ラマン分光 / 時間分解分光 / 振動解析 |
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| Outline of Final Research Achievements |
(1) While reducing a dimer molecule in which two biphenyls were linked by alkyl chains, electronic absorption and resonance Raman measurements were performed to clarify the mechanism of anion species formation. Vibrational analyses of the radical anion and divalent anion were also performed. (2) Raman measurements and analyses based on density functional theory calculations on various isotope-substituted benzenes were carried out. (3) We calculated molecular structures, infrared and Raman spectra, and electronic excitation energies of trans- and cis-polyacetylene and their oligomers using density functional theory and revisited the assignments of vibrational spectra. (4) Identification of metastable states of photoresponsive metal complexes and ultrafast infrared spectroscopic measurements on photochromic molecules and complexes were also performed.
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| Free Research Field |
分子分光学，構造化学，物理化学
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| Academic Significance and Societal Importance of the Research Achievements |
共役分子，共役二量体分子のイオン種，共役高分子における電子と分子振動の相互作用を解析した．得られた知見は，共役分子や共役高分子を用いた分子デバイスの機能のさらなる向上に役立つ可能性がある．また，極低温赤外分光や超高速時間分解赤外分光によって明らかにした光機能性分子・錯体の準安定状態の構造やその生成ダイナミクスに関する知見は，これらの機能性分子・錯体の機能発現に直結する知見である．
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