Synthesis of Luminescence Host Molecules Based on Curved Molecules Having Multiple Phosphorus Atoms
| Project/Area Number |
16K05684
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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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| Research Field |
Organic chemistry
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| Research Institution | Toyama Prefectural University (2017-2018)
University of Tsukuba (2016) |
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Principal Investigator |
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| Project Period (FY) |
2016-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Keywords | リン原子 / 蛍光 / 励起状態ダイナミクス / 有機典型元素化合物 / 分子認識 / 発光 / ホストゲスト化学 / 共役系 / 曲面分子 |
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| Outline of Final Research Achievements |
We reported syn- and anti-isomers of curved molecules having two phosphorus atoms. These isomers show similar electronic structures in group state. On the other hand, the excited-state properties of these isomer are very different: the fluorescence of the syn-isomer was observed in longer-wavelength region by 50 nm than that of the anti-isomer. The syn-isomer showed much higher fluorescence quantum yield and smaller intersystem crossing efficiency than the anti-isomer. The difference in excited-state dynamics should be due to the σ-π conjugation in LUMO of the isomers.
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| Academic Significance and Societal Importance of the Research Achievements |
リン原子をπ共役系に組み込むことで様々な発光有機材料が開発されてきた。その多くは、リン原子とπ共役系とが効果的に共役するためか、剛直な構造を持ったものであった。本研究で用いた屈曲型分子は適度な柔軟性を有するため、光励起により構造変化を起こし、それが蛍光特性の変化として観測された。このような分子は、様々な外部の刺激に応答して蛍光変化を示すセンサーとしての応用が期待される。
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Report
(4 results)
Research Products
(12 results)
