| Project/Area Number |
17H01198
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Functional solid state chemistry
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
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| Project Period (FY) |
2017-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥43,680,000 (Direct Cost: ¥33,600,000、Indirect Cost: ¥10,080,000)
Fiscal Year 2019: ¥16,250,000 (Direct Cost: ¥12,500,000、Indirect Cost: ¥3,750,000)
Fiscal Year 2018: ¥16,250,000 (Direct Cost: ¥12,500,000、Indirect Cost: ¥3,750,000)
Fiscal Year 2017: ¥11,180,000 (Direct Cost: ¥8,600,000、Indirect Cost: ¥2,580,000)
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| Keywords | リング状レニウム（I）多核錯体 / Keggin型ポリ酸 / 光物性 / CO2還元 / 光触媒 / 超分子 / リング状レニウム（I）錯体 |
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| Outline of Final Research Achievements |
We developed coupling methods of ring-shaped Re multinuclear complexes (Ring) with another or other metal complex(es). These methods can be applied to introduction of (1) a Ru(II) complex, (2) a Re(I) complex, and (3) another Ring (Ring-Ru, Ring-Re, Ring-Ring): Ring-Ru and Ring-Ring showed high light-harvesting abilities, and Ring-Re worked as an efficient photocatalyst for CO2 reduction.
We successfully synthesized 1:1 supramolecules of Ring and Keggin-type heteropolyoxometalate (Ring-POM) in good yields. Ring-POM could photochemically accumulate multi electrons in one molecule, and work as a new type of redox photosensitizers, which can mediate stepwise electron transfer.
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| Academic Significance and Societal Importance of the Research Achievements |
光増感剤や発光材料として機能するRingに、別種の錯体を導入することで、従来に無い光機能性分子へ転換できることを証明した。今後、人工光合成や有機合成などの分野に応用されることが期待される。Ringとヘテロポリ酸の複合体を多電子レドックス光増感剤として用い、錯体触媒によるCO2還元反応の機構に関する重要な情報を得たことは、より高機能なCO2還元光触媒系を開発するための新たな分子設計指針を与える。
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