Ion-selective response of visible light photoswitchable indole-hemithioindigo: toward chemical sensing of fluoride and hydroxide

Chem Commun (Camb). 2024 Mar 22. doi: 10.1039/d4cc00780h. Online ahead of print.ABSTRACTThe chemical sensing of hydrophilic anions such as F- and OH- is of significant importance but also presents considerable challenges. Herein, the thermal E to Z isomerization of a visible-light-responsive photoswitch (HTI-In) is utilized to address this challenge for the first time. The isomerization of HTI-In is dependent on the concentration of F- and OH-, and exhibits excellent selectivity toward F- and OH- over other common anions and cations. Unlike irreversible chemodosimeters and other conventional fluorescent probes, the photodynamic sensing of F- and OH- (demonstrated in solvents and polyurethane hydrogels) is based on a non-equilibrium chemical kinetics and can be operated fully reversibly.PMID:38517126 | DOI:10.1039/d4cc00780h

Source: Chemical Communications - March 22, 2024 Category: Chemistry Authors: Weian Zhang Yi Lu Yu Cheng Yifu Wang Zeying Wu Jingying Zhai Xiaojiang Xie Source Type: research