期刊
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
卷 96, 期 2, 页码 98-102出版社
CHEMICAL SOC JAPAN
DOI: 10.1246/bcsj.20220310
关键词
Carborane; Aggregation-induced emission; Regioisomer
o-Carborane-based emitters have made significant advancements in the past decade. While extensive research has been conducted on aryl-modified o-carboranes at the carbon atom, substitution on the boron atom has been less explored. This study introduced an anthracene unit on the B(3) position of o-carborane and compared it with the previously reported C(1)-substituted regioisomer to investigate the substitution position effect, revealing its significant impact on the intramolecular charge transfer process.
o-Carborane-based emitters have been greatly developed over the last ten years. From the viewpoint of molecular sym-metry, o-carborane has one type of equivalent carbon and four types of equivalent boron atoms. However, in contrast to the vast research of aryl-modified o-carboranes on the carbon atom of o-carborane, substitution on the boron atom is less inves-tigated. Herein, we introduced an anthracene unit on the B(3) position of o-carborane and explored the substitution posi-tion effect by comparison with the previously reported C(1) -substituted regioisomer. Single-crystal structures, optical mea-surements, and quantum chemical calculation revealed the significant impact of the substitution position, especially in the intramolecular charge transfer (ICT) process.
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