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タイトル: | Construction and properties of a light-harvesting antenna system for phosphorescent materials based on oligofluorene-tethered Pt-porphyrins |
著者: | Yeo, Hyeonuk Tanaka, Kazuo https://orcid.org/0000-0001-6571-7086 (unconfirmed) Chujo, Yoshiki |
著者名の別形: | 田中, 一生 中條, 善樹 |
発行日: | 1-Jan-2017 |
出版者: | Royal Society of Chemistry |
誌名: | RSC Advances |
巻: | 7 |
開始ページ: | 10869 |
終了ページ: | 10874 |
抄録: | Tetramerous molecular assemblies composed of four oligofluorenes as a light-harvesting antenna (LHA) and a Pt-porphyrin core as a phosphorescent chromophore were designed and synthesized for obtaining efficient phosphorescent materials. The resulting molecules showed good solubility in common organic solvents and high film-formability. From the series of optical measurements, it was shown that bright phosphorescence was observed from the LHA molecules. Efficient energy transfer through the cardo structure was confirmed from the oligofluorene units to the Pt-porphyrin core. Additionally, it was shown that aggregation-caused quenching (ACQ) and oxygen-deactivation of phosphorescence can be inhibited in the film state because of steric hinderance of bulky rings on the cardo structure. Finally, film materials with oxygen-resistant solid-state phosphorescence were obtained. Our material design is feasible not only for constructing highly-emissive solid-state phosphorescent materials but also for enhancing environment resistance to emissive materials by a unique structural unit. |
記述: | Electronic supplementary information (ESI) available. See DOI:10.1039/c6ra28735b |
著作権等: | © The Royal Society of Chemistry. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. |
URI: | http://hdl.handle.net/2433/218580 |
DOI(出版社版): | 10.1039/c6ra28735b |
関連リンク: | https://doi.org/10.1039/c6ra28735b |
出現コレクション: | 学術雑誌掲載論文等 |
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