Benzimidazole-functionalized fluorescent probe for rapid detection of 2,4,6-trinitrophenol and Ag+ in semiaqueous medium Scientific paper

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Bin Wang
Xixi Zuo
Jing Ma
Xiangmei Ma


In this study, a simple fluorescent chemosensor with good fluore­scence properties was synthesized, and was used to develop a sensitive and selective sensor, for the determination of 2,4,6-trinitrophenol (TNP) and Ag+ in THF/H2O medium, based on the fluorescence quenching mechanism. Fluores­cence quenching experiments revealed that the fluorescence intensities of the resulted probe were linear with the concentrations of TNP and Ag+ in the concentration range of 3.0–5.0 and 2.0–5.0 µmol dm-3, with the detection limit of 1.36 and 0.82 µmol dm-3, respectively. At the same time, accompanied with fluorescent color change under 365 nm UV light irradiation. This has demon­strated that the compound can act as a potential candidate for a "naked-eye" rapidly detector for Ag+ and TNP in soils and aquatic systems.


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B. Wang, X. Zuo, J. Ma, and X. Ma, “Benzimidazole-functionalized fluorescent probe for rapid detection of 2,4,6-trinitrophenol and Ag+ in semiaqueous medium: Scientific paper”, J. Serb. Chem. Soc., vol. 86, no. 9, pp. 859–870, Aug. 2021.
Analytical Chemistry


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