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Published on: March 16, 2017
A novel fluorophore based on the coupling of AIE and ESIPT mechanisms and its application in biothiol imaging
Qing Chen1, Chunman Jia, Yinfeng Zhang
1Hainan Provincial Key Lab of Fine Chemistry, Hainan University, Haikou, Hainan 570228, China. zhangqi@hainu.edu.cn jiachunman@hainu.edu.cn.
Abstract:
A novel fluorophore TPE-HBT was designed based on the intersection of tetraphenylethene (TPE) and 2-(2'-hydroxyphenyl)benzothiazole (HBT). Owing to the synergistic effect of aggregation-induced emission (AIE) and excited-state intramolecular proton transfer (ESIPT) mechanisms, this fluorophore exhibits excellent performance with a high solid-state fluorescence quantum yield (ΦF = 0.97) and a large Stokes shift (>200 nm). Moreover, its simple modification with the 2,4-dinitrobenzenesulfonyl group makes it suitable for biothiol imaging.
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