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タイトル: | Modulation of the cis‐ and trans‐Conformations in Bis‐o‐carborane Substituted Benzodithiophenes and Emission Enhancement Effect on Luminescent Efficiency by Solidification |
著者: | Nishino, Kenta Uemura, Kyoya Tanaka, Kazuo https://orcid.org/0000-0001-6571-7086 (unconfirmed) Morisaki, Yasuhiro Chujo, Yoshiki |
著者名の別形: | 上村, 京也 田中, 一生 森崎, 泰弘 中條, 善樹 |
キーワード: | Carboranes Aggregation‐induced emission Solid‐state structures Luminescence |
発行日: | 29-Mar-2018 |
出版者: | Wiley |
誌名: | European Journal of Organic Chemistry |
巻: | 2018 |
号: | 12 |
開始ページ: | 1507 |
終了ページ: | 1512 |
抄録: | Bis‐carborane‐substituted benzo[1, 2‐b:4, 5‐b′]dithiophenes (DCB‐R, where R = H, tBu) were synthesized and characterized. Their three‐dimensional conformations were tuned by introducing the tert‐butyl substituent at the para‐positions of the phenyl rings. Both molecules showed emission enhancement behavior, especially in the solid state. The emission quantum efficiencies were over 0.90 in the crystalline state. Moreover, it was shown that the efficiency of DCB‐tBu was over 0.70 in the amorphous state. From structural analyses and mechanistic investigations, it was proposed that the tert‐butyl substituents play a critical role in the formation of the trans‐conformation followed by suppression of aggregation‐caused quenching because of the o‐carborane units located at each plane of the benzodithiophene ring. |
著作権等: | This is the accepted version of the following article: [Kenta Nishino, Kyoya Uemura, Kazuo Tanaka, Yasuhiro Morisaki, Yoshiki Chujo. Modulation of the cis‐ and trans‐Conformations in Bis‐o‐carborane Substituted Benzodithiophenes and Emission Enhancement Effect on Luminescent Efficiency by Solidification. European Journal of Organic Chemistry, 2018, 12, 1507-1512], which has been published in final form at https://doi.org/10.1002/ejoc.201701641. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. The full-text file will be made open to the public on 30 March 2019 in accordance with publisher's 'Terms and Conditions for Self-Archiving' この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 This is not the published version. Please cite only the published version. |
URI: | http://hdl.handle.net/2433/235029 |
DOI(出版社版): | 10.1002/ejoc.201701641 |
出現コレクション: | 学術雑誌掲載論文等 |
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