Abstract
AbstractA novel dicoumarin‐derived hydrogen sulfide (H2S) selective fluorescent “turn‐on” probe 3‐(2,4‐dinitrobenzenesulfonate)‐dicoumarin (DC‐HS) created by covalent bonding between the 2,4‐dinitrobenzenesulfonyl (DNBS) and the 3‐hydroxy‐dicoumarin (DC‐OH) units. Upon the addition of H2S, the probe DC‐HS solution's fluorescence significantly increased, and its appearance is changed from practically colorless to brilliant yellow. Probe DC‐HS also showed significant fluorescence amplification that was quantitatively detectable in the concentration range of 0–1.5 μM and had a low detection limit or limit of detection of 0.2 nM. Moreover, with a high recovery rate and excellent accuracy, the developed fluorescent molecule was used successfully for the analysis of H2S in red wine samples.
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