A Reaction-Based Novel Fluorescent Probe for Detection of Hydrogen Sulfide and Its Application in Wine

摘要

A new reaction-based fluorescent probe 6-cyanonaphthalen-2-yl-2,4-dinitrobenzenesulfonate (probe 1) was designed and synthesized for detection of hydrogen sulfide (H_2S). The addition of H_2S to a solution of probe 1 resulted in a marked fluorescence increased accompanied by a visual color change from colorless to yellow. Importantly, this distinct color response indicates that probe 1 could be used as a visual tool for detection of H_2S. H_2S can be detected quantitatively in the concentration range 0 to 25 μM and the detection limit was 30 nM. Moreover, probe 1 was successfully used as a sensor to determine H_2S levels in red wine and beer.