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A Colorimetric and Near-Infrared Fluorescent Probe for Detection of Hydrogen Sulfide and Its Real Multiple Applications

Keli Zhong, Lin Chen, Yongxin Pan, Xiaomei Yan, Shuhua Hou, Yiwei Tang, Xue Gao, Jianrong Li, Lijun Tang

Spectrochim Acta A Mol Biomol Spectrosc. 2019 Oct 5;221:117135.

PMID: 31158768

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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