A thioether-rich crown-based highly selective fluorescent sensor for Hg2+ and Ag+ in aqueous solution

Tao Chen; Weiping Zhu; Yufang Xu; Shenyi Zhang; Xiaojun Zhang; Xuhong Qian

doi:10.1039/B908969A

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A thioether-rich crown-based highly selective fluorescent sensor for Hg²⁺ and Ag⁺ in aqueous solution†

Tao Chen,^a Weiping Zhu,*^a Yufang Xu,^a Shenyi Zhang,^a Xiaojun Zhang^a and Xuhong Qian^a

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* Corresponding authors

^a Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, China
E-mail: wpzhu@ecust.edu.cn
Fax: +86-21-64252603

Abstract

A new fluorescent sensor 1, based on the naphthalimide chromophore and thioether-rich crown receptor, exhibited dual signaling behaviors for Hg²⁺ and Ag⁺ in aqueous solution. Upon addition of Hg²⁺, the fluorescence intensity enhanced in a linear fashion with a quantum yield increase of about 5-fold. Moreover, with the 1-Hg²⁺ complex, Ag⁺ was easily recognized by a marked fluorescence quenching. The living cells image experiments demonstrate the value of sensor 1 in fluorescent visualization of Hg²⁺ ions in biological systems.

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Article information

DOI: https://doi.org/10.1039/B908969A
Article type: Paper
Submitted: 06 May 2009
Accepted: 21 Oct 2009
First published: 24 Nov 2009

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Dalton Trans., 2010,39, 1316-1320

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A thioether-rich crown-based highly selective fluorescent sensor for Hg²⁺ and Ag⁺ in aqueous solution

T. Chen, W. Zhu, Y. Xu, S. Zhang, X. Zhang and X. Qian, Dalton Trans., 2010, 39, 1316 DOI: 10.1039/B908969A

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Dalton Transactions