Thiocoumarin Ethenylene-Bridge Dicyanoisophorone Skeleton: A Strategy for Ratiometric Fluorescent Detection of Hypochlorous Acid.

Herein, an ethylene-bridge bond of diethylaminocoumarin and dicyanoisophorone unit fluorescence probe was developed for the specific detection of HClO. The sensing mechanism involves HClO-induced cleavage of the ,-dimethylthiocarbamate group, oxidation-triggered ethylene bridge rearrangement, ultimately leading to the formation of a unique thiophene ring structure. The probe was successfully applied for simultaneous detection of HClO in beverage and food samples.

A dual-functional fluorescence probe bearing thiocoumarin ethylene-bridge dicyanopyrone skeleton for detection hydrogen sulfide and hypochlorous acid.

Due to the vital roles of hydrogen sulfide and hypochlorous acid in beverage, food, pathology and physiology, the real-time and in situ detection of them have attracted a lot of interest. Herein, a dual-functional fluorescence probe CS was developed containing ethylene-bridge bond of electron donor diethylaminocoumarin and electron acceptor 2-(2,6-dimethyl-4H-pyran-4-ylidene)malononitrile unit. CS exhibited a high specificity, sensitivity (detection limit: 21.