| 研究課題/領域番号 |
21K05085
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| 研究種目 |
基盤研究(C)
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| 配分区分 | 基金 |
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| 応募区分 | 一般 |
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| 審査区分 |
小区分34010:無機・錯体化学関連
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| 研究機関 | 九州大学 |
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研究代表者 |
SU SHENGQUN 九州大学, 先導物質化学研究所, 学術研究員 (90817496)
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| 研究期間 (年度) |
2021-04-01 – 2024-03-31
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| 研究課題ステータス |
完了 (2023年度)
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| 配分額 *注記 |
4,160千円 (直接経費: 3,200千円、間接経費: 960千円)
2023年度: 1,300千円 (直接経費: 1,000千円、間接経費: 300千円)
2022年度: 1,430千円 (直接経費: 1,100千円、間接経費: 330千円)
2021年度: 1,430千円 (直接経費: 1,100千円、間接経費: 330千円)
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| キーワード | polarization change / spin transition / photoexcitation / charge transfer / electric current / ion displacement / photo effect |
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| 研究開始時の研究の概要 |
We propose an approach towards light-induced polarization switching in a single crystal of spin crossover complexes with light-induced excited spin-state trapping effect, in which long-lived metastable states with different polarization can be generated by direct excitation upon irradiation with suitable light. Moreover, we expect to identify the differences in the chemical and electronic structures between ground states and excited states for unraveling the mechanism of this process. This project will also pave the way towards highly efficient energy conversion from light to electricity.
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| 研究実績の概要 |
The proposed research aims at developing molecular crystals with photo-induced macroscopic polarization change with current output during the relaxation process from excited state to the ground state. We focused on the spin crossover complexes with Light-Induced Excited Spin-State Trapping effect and Prussian blue analogues with photo-induced electron-transfer-coupled spin transition process. We have obtained a polar Fe(II) spin crossover complex and a trinuclear [Fe2Co] Prussian blue analogue with photo-response. During relaxation process, the output current was observed as expected. This study will benefit the development of multifunctional optoelectronic materials and energy conversion materials.
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