Switchable and selective detection of Zn2+ or Cd2+ in living cells based on 3′-O-substituted arrangement of benzoxazole-derived fluorescent probes

Yongqian Xu; Liangliang Xiao; Shiguo Sun; Zhichao Pei; Yuxin Pei; Yi Pang

doi:10.1039/C4CC02335H

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Switchable and selective detection of Zn²⁺ or Cd²⁺ in living cells based on 3′-O-substituted arrangement of benzoxazole-derived fluorescent probes†

Yongqian Xu,*^a Liangliang Xiao,^a Shiguo Sun,*^a Zhichao Pei,^a Yuxin Pei^a and Yi Pang^b

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* Corresponding authors

^a College of Science, Northwest A&F University, Yangling, Shaanxi, P.R. China
E-mail: xuyq@nwsuaf.edu.cn, sunsg@nwsuaf.edu.cn

^b Department of Chemistry & Maurice Morton Institute of Polymer Science, The University of Akron, Akron, OH, USA

Abstract

Two benzoxazole-derived ESIPT fluorescent sensors E1 and E2 show highly selective detection of Zn²⁺ and Cd²⁺, respectively, in aqueous solution and living cells. The selectivity switching from Zn²⁺ to Cd²⁺ is attributed to the different binding mode which is dependent on the 3′-O-substituted arrangement.

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Article information

DOI: https://doi.org/10.1039/C4CC02335H
Article type: Communication
Submitted: 29 Mar 2014
Accepted: 19 May 2014
First published: 21 May 2014

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Chem. Commun., 2014,50, 7514-7516

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Switchable and selective detection of Zn²⁺ or Cd²⁺ in living cells based on 3′-O-substituted arrangement of benzoxazole-derived fluorescent probes

Y. Xu, L. Xiao, S. Sun, Z. Pei, Y. Pei and Y. Pang, Chem. Commun., 2014, 50, 7514 DOI: 10.1039/C4CC02335H

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Chemical Communications