A fast-responsive fluorescent probe based on a terpyridine-Zn2+ complex for sensing hypochlorous acid in aqueous solution and its application in real water samples and bioimaging

Yaping Pan; Yang Yan; Yang Li; Xue-Wang Gao; Duobin Chao

doi:10.1039/C9NJ03801A

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A fast-responsive fluorescent probe based on a terpyridine-Zn²⁺ complex for sensing hypochlorous acid in aqueous solution and its application in real water samples and bioimaging†

Yaping Pan,^a Yang Yan,

^a Yang Li,^a Xue-Wang Gao^b and Duobin Chao

*^c

Author affiliations

* Corresponding authors

^a School of Petroleum and Chemical Engineering, Dalian University of Technology, Panjin, Liaoning 124221, China

^b Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry, University of Chinese Academy of Sciences Chinese Academy of Sciences, Beijing 100190, China

^c School of Materials Science and Chemical Engineering, Ningbo University, Zhejiang 315211, China
E-mail: chaoduobin@nbu.edu.cn

Abstract

A terpyridine-Zn²⁺ complex TpyZnS was synthesized and developed as a turn-off fluorescent probe for HClO in aqueous solution. The fluorescence intensity of TpyZnS dramatically decreased within 10 seconds in the presence of HClO. Additionally, the detection limit for HClO was found to be 0.16 μM. It is proposed that oxidation of the thioether group in TpyZnS to the corresponding sulfoxide is probably responsible for the fluorescence quenching of TpyZnS. The possible sensing process was studied by ¹H NMR, HRMS spectroscopy and theoretical calculations. Finally, the probe TpyZnS was successfully employed in the detection of HClO in real water samples and bioimaging.

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Article information

DOI: https://doi.org/10.1039/C9NJ03801A
Article type: Paper
Submitted: 22 Jul 2019
Accepted: 03 Sep 2019
First published: 03 Sep 2019

Download Citation

New J. Chem., 2019,43, 15120-15125

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A fast-responsive fluorescent probe based on a terpyridine-Zn²⁺ complex for sensing hypochlorous acid in aqueous solution and its application in real water samples and bioimaging

Y. Pan, Y. Yan, Y. Li, X. Gao and D. Chao, New J. Chem., 2019, 43, 15120 DOI: 10.1039/C9NJ03801A

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