2021 Fiscal Year Final Research Report
New Development in Dipyrrin Metal Complex Molecular and Low-Dimensional Science: Exploration of Evolutional Phofunctions
| Project/Area Number |
17H03028
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Inorganic chemistry
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| Research Institution | Tohoku University (2019, 2021)
Kyoto University (2018)
The University of Tokyo (2017) |
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Principal Investigator |
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| Project Period (FY) |
2017-04-01 – 2020-03-31
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| Keywords | ジピリン / 亜鉛 / 金属錯体 / 光物性 |
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| Outline of Final Research Achievements |
Dipyrrin is a planar molecule consisting of two pyrrole rings linked by a methine linker. It is characterized by a well-developed π-electron system and strong optical absorption based on the 1π-π* transition. It functions as a univalent bidentate anionic ligand by deprotonation, and spontaneously complexes with various metal ions to form neutral complexes such as bis(dipyrrinato)metal(II) complexes. In this study, dipyrine metal complex nanowires with helical and asymmetric structures were synthesized. In the former case, we succeeded in enhancing circularly polarized luminescence. In the latter case, we achieved an extension of the photoelectric conversion wavelength, increased the luminescence quantum yield, and discovered and proposed a novel methodology for the existence and demonstration of fast exciton transfer in the wire.
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| Free Research Field |
金属錯体
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| Academic Significance and Societal Importance of the Research Achievements |
本研究課題では，ジピリン金属ナノワイヤを用いた独創的・革新的な光機能性分子・ナノ材料を創製した．具体的には，応用面・社会面からの要請も大きい円偏光発光（CPL）および光電変換能を有するナノワイヤを構築した．CPL物質は3次元ディスプレイ・セキュリティーペイント・光通信など，次世代の高度光材料として期待される．一方，光電変換はエネルギー問題解決の有力な解決策の一つに数えられている．今後の社会実装が期待される成果を得た．学術的には，ワイヤ内励起子移動の新しい実証法を提案した点に重要性が存在する．
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