2022 Fiscal Year Final Research Report
Exploring new functional properties induced from the dynamic behavior of pi-extended trityl radical derivatives
| Project/Area Number |
20K05475
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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 33010:Structural organic chemistry and physical organic chemistry-related
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| Research Institution | Osaka University |
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Principal Investigator |
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| Project Period (FY) |
2020-04-01 – 2023-03-31
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| Keywords | トリチルラジカル / 動的挙動 / 構造変化 / 外部刺激応答 / トリチルカチオン / 固体発光 / 三重項 |
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| Outline of Final Research Achievements |
The initial aim of this research work was to construct a system that can manifest various physical properties by utilizing the localization and delocalization of the spin density distribution on a molecule. For this purpose, I focused on the propeller structure of the trityl radical, one of the representative π-radicals, and its dynamic behavior, such as propeller structure inversion and dimerization formation.
On the other hand, through this research, I could find that various dynamic behaviors of the molecular skeleton that had not been found before in various trityl derivatives with bulky aromatic rings, as well as external stimulus responsiveness that changes optical and magnetic properties in response to thermal, pressure and mechanical stimuli.
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| Free Research Field |
構造有機化学
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| Academic Significance and Societal Importance of the Research Achievements |
嵩高い芳香環を密接させてある基本骨格に複数導入することは、有機合成上困難を伴うことが多く、そのような化合物群の合成例は限られていた。一方で本研究ではこれまで研究者自身が培ってきた芳香環密集型化合物の合成技術を駆使し、様々な外部刺激に容易に応答するトリチル骨格を基盤に持つ多くの新奇化合物の合成に成功した。特に擦るといった簡単な機械的刺激によって、閉殻種から三重項の開殻種へと変化する化合物は報告例がほとんどなく、スピン特性を容易に変化させることのできる有機量子材料など、今後発展が大いに見込まれる研究分野への活用が期待できる。
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