Combination of hydrophilic quinolinium group and ortho-aldehyde group accelerated thiolysis of dinitrophenyl ether: A colorimetric and turn-on fluorescent probes for the detection of hydrogen sulfide

•A new H2S fluorescence probe with the thiolysis of dinitrophenyl ether is developed.•The probe can detect H2S with high selectivity and low LOD in aqueous solution.•The probe was successfully applied to detec H2S in test paper strips and food samples.•The probe was successfully used for imaging exogenous H2S in living cells.