Elucidation of the excited state structure of emissive copper (I) complexes
Project/Area Number |
17K05801
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Inorganic chemistry
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Research Institution | Gunma University |
Principal Investigator |
Asano Motoko 群馬大学, 大学院理工学府, 教授 (80201888)
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Project Period (FY) |
2017-04-01 – 2022-03-31
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Project Status |
Completed (Fiscal Year 2021)
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Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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Keywords | 励起状態 / 遅延けい光 / りん光輻射速度 / 配位子依存性 / 温度依存性 / 励起構造 / 電荷移動励起状態 / ジホスフィン配位子 / 時間分解ESR / 発光強度 / 光機能 / 光エネルギー / 温度変化 / 緩和過程 / 発光寿命 / Cu(I)錯体 |
Outline of Final Research Achievements |
The electronic excited structure and spin sates of helerpleptic copper(I) complexes bearing diimine and diphosphine ligands were investigated together with their luminescence properties. These copper(I) complexes exhibit cooperatively phosphorescence and delayed fluorescence. In this project, particularly, a novel approach to analyze excited structure was proposed based on temperature dependence on emission lifetimes and quantum yields in solutions. It was found that relaxation processes were sensitively influenced by the ligands, and it enables control of photo-functionality of Cu(I) complexes.
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Academic Significance and Societal Importance of the Research Achievements |
励起一重項と三重項からの2つの状態からの発光を起こす励起構造の新しい解析方法の提案は、Cu(I)錯体のみならず、種々の物質の解析に広く適用することができものであり意義深い。また、一連の銅錯体は高い発光性をもち、光機能性錯体としての応用が期待されているが、本研究は、配位子の電子構造をもとに発光特性の傾向を予測可能とし、機能発現にむけた分子設計において指針を与えるものと期待できる。
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Report
(6 results)
Research Products
(40 results)
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[Journal Article] S,C,C- and O,C,C-Bridged Triarylamines and Their Persistent Radical Cations2021
Author(s)
Shunpei Kataoka, Shuichi Suzuki, Yoshihito Shiota, Kazunari Yoshizawa, Taisuke Matsumoto, Motoko S. Asano, Toshitada Yoshihara, Chitoshi Kitamura, Shin-ichiro Kato
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Journal Title
J. Org. Chem.
Volume: 86
Issue: 18
Pages: 12559-12568
DOI
Related Report
Peer Reviewed
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[Journal Article] Open-Shell Singlet Diradicaloid Difluoreno[4,3-b:3′,4′-d]furan and Its Radical Cation and Dianion2020
Author(s)
Sakura Mori, Motoko Akita, Shuichi Suzuki, Motoko S. Asano, Michihisa Murata, Tsuyoshi Akiyama , Taisuke Matsumoto, Chitoshi Kitamura, Shin-ichiro Kato
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Journal Title
Chem.Comm.
Volume: -
Issue: 44
Pages: 5881-5884
DOI
Related Report
Peer Reviewed
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[Journal Article] Synthesis, Structures, and Properties of Neutral and Radical Cationic S,C,C-Bridged Triphenylamine2020
Author(s)
Shin-ichiro Kato, Takanori Matsuoka, Shuichi Suzuki, Motoko S. Asano, Toshitada Yoshihara, Seiji Tobita, Taisuke Matsumoto, Chitoshi Kitamura
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Journal Title
Org. Lett.
Volume: 22
Issue: 2
Pages: 734-738
DOI
Related Report
Peer Reviewed
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[Presentation] Spin-orbit coupling in Cu(I) complexes2018
Author(s)
Sho Hashimoto, Yoshifumi Yasuda, Motoko S. Asano, Takeshi Kodama,Michihiro Nishikawa,Taro Tsubomura ,Hiroyuki Takeda,Osamu Ishitani
Organizer
4th Kanto Area Spin Chemistry Meeting
Related Report
Int'l Joint Research / Invited
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