Hydrogen sulfide(H2S)is not only involved in the physiological regulation of human body,but also has an impact on the flavor and taste of wine.Therefore,a benzopyran derivative modified by 2,4-dinitrobenzene(DCM-dip)was synthe-sized,which had no fluorescence in dimethyl sulfoxide(DMSO)/phosphate buffered saline(PBS)(V∶V=8∶2,pH=8)solu-tion.DCM-dip underwent a thiolysis reaction with H2S to release the intermediate with fluorescence,which showed a fluo-rescence turn-on response for recognition of H2S.DCM-dip recognized H2S with a response time of 20 min,a detection limit of 2.82 μmol/L,pH application range of 8～11 and a large Stokes shift(123 nm),avoiding background interference.The ap-plication research indicates that DCM-dip can be used to detect H2S in red wine and beer samples,and image for H2S in living cells.
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