論文

査読有り
2018年3月29日

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
  • Kenta Nishino
  • ,
  • Kyoya Uemura
  • ,
  • Kazuo Tanaka
  • ,
  • Yasuhiro Morisaki
  • ,
  • Yoshiki Chujo

2018
12
開始ページ
1507
終了ページ
1512
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1002/ejoc.201701641
出版者・発行元
Wiley-VCH Verlag

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.

リンク情報
DOI
https://doi.org/10.1002/ejoc.201701641
URL
http://repository.kulib.kyoto-u.ac.jp/dspace/handle/2433/235029
ID情報
  • DOI : 10.1002/ejoc.201701641
  • ISSN : 1099-0690
  • ISSN : 1434-193X
  • SCOPUS ID : 85044735348

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