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Real-time probing of mercury through an efficient “turn-on” strategy with potentialities as in field mapping kit and live cell imaging

Abstract

Based on rhodamine scaffold as fluorophore and 2-aminothiazole as receptor, we present a highly selective and sensitive sensor (TS). An enhanced photophysical response (fluorescence as well as absorption) accompanied by high sensitivity and selectivity was observed upon interaction of TS with Hg2+ among various competitive cations (Ag+, Al3+, Ba2+, Ca2+, Co3+, Co2+, Cd2+, Fe3+, Fe2+, K+, Li+, Mg2+, Mn2+, Cu2+, Pb2+, Ni2+, Na+ and Zn2+) in CH3CN:H2O (7:3 v/v, HEPES buffer 10 mM pH 7.0). The synthesized sensor can detect Hg2+ as low as 0.326M with complexation constant of 2.37 x 106 M-1. This complexation between TS and Hg2+ is reversible in the presence of ethylenediaminetetraacetate (EDTA). Further, the single crystal X-ray diffraction (XRD) and job’s plot shows 1:1 binding stoichiometry. The most interesting feature of the sensor is real-time determination of Hg2+ in real contaminated water. Furthermore, the fabricated sensor can be employed

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Supplementary files

Publication details

The article was received on 11 Apr 2018, accepted on 15 May 2018 and first published on 16 May 2018


Article type: Paper
DOI: 10.1039/C8NJ01746H
Citation: New J. Chem., 2018, Accepted Manuscript
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    Real-time probing of mercury through an efficient “turn-on” strategy with potentialities as in field mapping kit and live cell imaging

    T. Rasheed, C. Li, F. Nabeel, M. Qi, Y. Zhang and C. Yu, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C8NJ01746H

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