A ratiometric fluorescent probe for hydrogen sulfide based on an excited-state intramolecular proton transfer mechanism
Q Huang, XF Yang, H Li
Index: Huang, Qian; Yang, Xiao-Feng; Li, Hua Dyes and Pigments, 2013 , vol. 99, # 3 p. 871 - 877
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Citation Number: 35
Abstract
Abstract A ratiometric fluorescent probe for hydrogen sulfide (H 2 S) has been developed based on modulation of the excited-state intramolecular proton transfer (ESIPT) process of 2- (2′-hydroxy-3′-methoxyphenyl) benzothiazole (HMBT). The probe was prepared by coupling HMBT with 3, 3′-dithiodipropionic acid, and it only displays enol-like fluorescence emission at 374 nm. However, upon introducing H 2 S in neutral solution, the protecting ...
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