2022 Fiscal Year Final Research Report
Construction and Functionalities of Chiral Multinuclear Complexes Based on Variable Transformation of Ligands
| Project/Area Number |
20K05492
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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 33020:Synthetic organic chemistry-related
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| Research Institution | Hokkaido University (2022)
Institute of Physical and Chemical Research (2021)
Kyoto University (2020) |
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Principal Investigator |
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| Project Period (FY) |
2020-04-01 – 2023-03-31
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| Keywords | platinum / chirality / circular dichroism |
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| Outline of Final Research Achievements |
In this research, we have demonstrated the optical properties derived from platinum-platinum intramolecular interactions of the newly developed dinuclear platinum complexes bearing a diimine supporting ligand, which exhibited the red-shifted chraracteristic absorption band due to MLCT (metal to ligand charge transfer) transition. Moreover, chiral dinuclear acetylide-platinum complexes showed CPL (circularly polarized luminescence) in the near-infrared region. Besides the chiral HPLC separation of racemic complexes, chiral binaphthyl linker could also control the axial chirality of the bipyridine complexes as well as their dihedral angles.
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| Free Research Field |
有機金属化学，錯体化学
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| Academic Significance and Societal Importance of the Research Achievements |
円偏光発光（CPL）材料の開発は光学異方性を持つ先端材料，例えば3Dディスプレイなどへの応用も可能な重要課題であり，その基礎的知見は有機材料において数多く発表されているが，発光効率などの面でまだまだ改善の余地が多い分野である．特に有機化合物と金属元素の性質を併せ持つ有機金属錯体はd電子がかかわるキラリティー制御と新たなCPL発現機構により，これまでにない全く新しい基礎学理に基づく材料創出へと進展する可能性もあることから，本研究成果はその端緒として大きな社会的意義を有するものと言える．
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