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A novel histidine functionalized 1,8-naphthalimide-based fluorescent chemosensor for selective and sensitive detection of Hg2+ in water

Abstract

Hg2+ is one of the the most threatening heavy metal ions. So finding a quick and easy way to detection Hg2+ is very important. In this work, we designed and synthesized a simple Hg2+ chemosensor Z, which bearing on carboxyl and imidazolyl moiety as hydrophilic groups site and Hg2+ binding site, while naphthalimide moiety as signal group. Interestingly, the sensor Z could dissolve in water and shown high selectivity and sensitivity for Hg2+ in water solution. Other coexistent competitive metal ions (Fe3+, Ag+, Ca2+, Cu2+, Co2+, Ni2+, Cd2+, Pb2+, Zn2+, Cr3+ and Mg2+) had no interfered in process of detect Hg2+. The detection limit of the sensor Z toward Hg2+ was 1.785×10-7 M, which indicated its high detection sensitivity. Meanwhile, the immediately response of Z to Hg2+ provide a real-time detection method for Hg2+ in water solution. Moreover, the sensor Z can be cyclic utilization.

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Publication details

The article was received on 14 Dec 2016, accepted on 06 Mar 2017, published on 07 Mar 2017 and first published online on 07 Mar 2017


Article type: Paper
DOI: 10.1039/C6NJ03930H
Citation: New J. Chem., 2017, Accepted Manuscript
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    A novel histidine functionalized 1,8-naphthalimide-based fluorescent chemosensor for selective and sensitive detection of Hg2+ in water

    Y. Zhang, K. Zhong, J. Su, X. Chen, H. Yao, T. Wei and Q. Lin, New J. Chem., 2017, Accepted Manuscript , DOI: 10.1039/C6NJ03930H

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