Novel fluorescent probe based on dicoumarin for detection of hydrogen sulfide in real samples |
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Authors: | Tong Hong Song Cheng Xuefang Zhong Yiwei Zuo Yiming Dong Zhichuan Shi Zhigang Zhao |
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Institution: | School of Chemistry and Environment, Southwest Minzu University, Chengdu, PR China |
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Abstract: | A 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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Keywords: | 2 4-dinitrobenzenesulfonyl dicoumarin fluorescent probe hydrogen sulfide |
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