A highly selective and ratiometric fluorescence probe for the detection of Hg2+ and pH change based on coumarin in aqueous solution

Shouhai Yang; Wenge Yang; Qirun Guo; Tuan Zhang; Keyi Wu; Yonghong Hu

doi:10.1016/j.tet.2014.09.082

A highly selective and ratiometric fluorescence probe for the detection of Hg²⁺ and pH change based on coumarin in aqueous solution

Shouhai Yang, Wenge Yang, Qirun Guo, Tuan Zhang, Keyi Wu, Yonghong Hu

COLLEGE OF FOOD SCIENCE AND LIGHT INDUSTRY

Research output: Contribution to journal › Article › peer-review

32 Scopus citations

Abstract

A simple but highly selective coumarin-based fluorescence probe 1, 8-(1,3-dithiane)-7-hydroxycoumarin was designed and synthesized for both the ratiometric detection of Hg²⁺ and the on-off response to pH change in aqueous solution. The sensor detected Hg²⁺ selectively via Hg²⁺-promoted thioacetal deprotection reaction within five minutes and reflected pH in the range from 7.8 to 11.9 as a result of the equilibrium between weak-fluorescent acid form and strong-fluorescent base form. In addition, the probe has an excellent selectivity towards Hg²⁺ over other competitive metal ions for biomedical and environmental applications. The sensing behavior of our probe was studied by UV-visible absorption spectra and fluorescence spectra.

Original language	English
Pages (from-to)	8914-8918
Number of pages	5
Journal	Tetrahedron
Volume	70
Issue number	46
DOIs	https://doi.org/10.1016/j.tet.2014.09.082
State	Published - 18 Nov 2014

Keywords

Coumarin
Fluorescence quenching
Hg pH
Thioacetal

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10.1016/j.tet.2014.09.082

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title = "A highly selective and ratiometric fluorescence probe for the detection of Hg2+ and pH change based on coumarin in aqueous solution",

abstract = "A simple but highly selective coumarin-based fluorescence probe 1, 8-(1,3-dithiane)-7-hydroxycoumarin was designed and synthesized for both the ratiometric detection of Hg2+ and the on-off response to pH change in aqueous solution. The sensor detected Hg2+ selectively via Hg2+-promoted thioacetal deprotection reaction within five minutes and reflected pH in the range from 7.8 to 11.9 as a result of the equilibrium between weak-fluorescent acid form and strong-fluorescent base form. In addition, the probe has an excellent selectivity towards Hg2+ over other competitive metal ions for biomedical and environmental applications. The sensing behavior of our probe was studied by UV-visible absorption spectra and fluorescence spectra.",

keywords = "Coumarin, Fluorescence quenching, Hg pH, Thioacetal",

author = "Shouhai Yang and Wenge Yang and Qirun Guo and Tuan Zhang and Keyi Wu and Yonghong Hu",

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T1 - A highly selective and ratiometric fluorescence probe for the detection of Hg2+ and pH change based on coumarin in aqueous solution

AU - Yang, Shouhai

AU - Yang, Wenge

AU - Guo, Qirun

AU - Zhang, Tuan

AU - Wu, Keyi

AU - Hu, Yonghong

PY - 2014/11/18

Y1 - 2014/11/18

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AB - A simple but highly selective coumarin-based fluorescence probe 1, 8-(1,3-dithiane)-7-hydroxycoumarin was designed and synthesized for both the ratiometric detection of Hg2+ and the on-off response to pH change in aqueous solution. The sensor detected Hg2+ selectively via Hg2+-promoted thioacetal deprotection reaction within five minutes and reflected pH in the range from 7.8 to 11.9 as a result of the equilibrium between weak-fluorescent acid form and strong-fluorescent base form. In addition, the probe has an excellent selectivity towards Hg2+ over other competitive metal ions for biomedical and environmental applications. The sensing behavior of our probe was studied by UV-visible absorption spectra and fluorescence spectra.

KW - Coumarin

KW - Fluorescence quenching

KW - Hg pH

KW - Thioacetal

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DO - 10.1016/j.tet.2014.09.082

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JO - Tetrahedron

JF - Tetrahedron

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A highly selective and ratiometric fluorescence probe for the detection of Hg²⁺ and pH change based on coumarin in aqueous solution

Abstract

Keywords

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