N-to-S substitution induced fluorescence-to-phosphorescence dominant emission with excitation-dependent intersystem crossing
作者:Guoyan Li、Yexin Li、Xiaofeng Yang、Jinling Miao、Yu Cui、Yong Nie、Shuaijun Yang、Wei Liu、Guoxin Sun
DOI:10.1039/d3tc00908d
日期:2024.2.15
A small variation in a molecule structure induces a drastic change from fluorescence (F)-dominant to phosphorescence (P)-dominant dual emission with excitation-dependent properties.
Novel dibenzothiophene chromophores with peripheral barbituric acceptors
作者:Michaela Sperátová、Jaroslaw Jedyrka、Oldřich Pytela、Iwan V. Kityk、Ali H. Reshak、Filip Bureš、Milan Klikar
DOI:10.1016/j.tet.2019.07.017
日期:2019.8
based on central 2,8-disubstituted dibenzothiophene (DBT) or dibenzothiophene-S,S-dioxide (DBTO) has been designed and prepared. The interconnection of DBT(O) central scaffold with two peripheral barbituric acceptors via various π-spacer allowed significant property tuning of target chromophores. Four new final chromophores and six DBT(O)-intermediates have been successfully synthesized and fully characterized