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Updated: Jan 24, 2026

A Sensitive Visual Method for the Detection of Hydrogen Sulfide Producing Bacteria
Published on: June 27, 2022
A colorimetric and near-infrared fluorescent probe for detection of hydrogen sulfide and its real multiple
Keli Zhong1, Lin Chen2, Yongxin Pan2
1College of Chemistry and Chemical Engineering, Bohai University, Jinzhou 121013, China; College of Food Science and Technology, Bohai University, National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, The Fresh Food Storage and Processing Technology Research Institute of Liaoning Provincial Universities, Jinzhou, 121013, China.
Abstract:
A novel colorimetric and near-infrared fluorescent probe (L) with D-π-A structure derived from 4-diethylaminosalicylaldehyde and 2-(3-cyano-4,5,5-trimethylfuran-2(5H)-ylidene)malononitrile has been developed. Probe L displays highly selective and sensitive recognition for H2S over various anions with a large Stokes shift (96 nm) in DMF/H2O (3/7, v/v, PBS-HCl 10 mM, pH = 7.4). A naked-eye observable color change of L solution from colorless to bluish-purple occurred on treatment with H2S. The potential applications of probe L were evaluated and the results show that probe L can detect H2S vapor and H2S in real water, red wine and living cells.
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