|Title:||Modulation of the cis‐ and trans‐Conformations in Bis‐o‐carborane Substituted Benzodithiophenes and Emission Enhancement Effect on Luminescent Efficiency by Solidification|
|Author's alias:||上村, 京也|
|Journal title:||European Journal of Organic Chemistry|
|Abstract:||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.|
|Rights:||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.|
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|Appears in Collections:||Journal Articles|
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