Issue 7, 2011

An 2-(2′-aminophenyl)benzoxazole-based OFF–ON fluorescent chemosensor for Zn2+ in aqueous solution

Abstract

A water-soluble fluorescent sensor, 1, based on the “receptor-spacer-fluorophore” [2-(2′-aminophenyl)benzoxazole-amide-2-picolylamine] sensor platform, demonstrates the high sensitivity for Zn2+ with a 25-fold fluorescence enhancement upon chelation to Zn2+ and also exhibits high selectivity to Zn2+ over other metal ions. X-ray crystal structure of Zn2+ complex reveals that the amide oxygen (O2) cooperates with 2-picolylamine unit (N3, N4) as a receptor bind Zn2+.

Graphical abstract: An 2-(2′-aminophenyl)benzoxazole-based OFF–ON fluorescent chemosensor for Zn2+ in aqueous solution

Supplementary files

Article information

Article type
Paper
Submitted
05 Nov 2010
Accepted
05 Jan 2011
First published
06 Jan 2011

Org. Biomol. Chem., 2011,9, 2345-2349

An 2-(2′-aminophenyl)benzoxazole-based OFF–ON fluorescent chemosensor for Zn2+ in aqueous solution

M. Chen, X. Lv, Y. Liu, Y. Zhao, J. Liu, P. Wang and W. Guo, Org. Biomol. Chem., 2011, 9, 2345 DOI: 10.1039/C0OB00983K

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