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Issue 21, 2017
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A novel iodination-triggered competitive coordination mechanism: indirect detection of Hg2+ and I using a simple copillar[5]arene-based fluorometric sensor

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Abstract

A novel iodination-triggered competitive coordination has been developed for indirect detection of Hg2+ and I using the simple copillar[5]arene-based sensor DBP5. While DBP5 could directly sense neither Hg2+ nor I, the iodinated form of DBP5 detected Hg2+ with high selectivity and sensitivity (3.73 × 10−8 mol L−1). Other cations including Fe3+, Co2+, Ca2+, Ni2+, Pb2+, Cd2+, Zn2+, Cr3+, Mg2+ and Ag+ had no obvious influence on the probing behavior. In addition, a system consisting of Hg2+ in a DBP5 solution highly selectively and sensitively (3.51 × 10−7 mol L−1) detected I based on a combined iodination and Hg2+ coordination process. It is a novel and efficient way for detection Hg2+ and I in an aqueous solution. Moreover, the changes in the fluorescence of DBP5 resulting from the addition of Hg2+ and I were utilized to form a molecular NAND logic gate.

Graphical abstract: A novel iodination-triggered competitive coordination mechanism: indirect detection of Hg2+ and I− using a simple copillar[5]arene-based fluorometric sensor

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Publication details

The article was received on 26 May 2017, accepted on 19 Sep 2017 and first published on 20 Sep 2017


Article type: Paper
DOI: 10.1039/C7NJ01856H
Citation: New J. Chem., 2017,41, 12707-12712
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    A novel iodination-triggered competitive coordination mechanism: indirect detection of Hg2+ and I using a simple copillar[5]arene-based fluorometric sensor

    J. Chen, X. Cheng, H. Li, B. Han, Q. Lin, Y. Zhang, H. Yao and T. Wei, New J. Chem., 2017, 41, 12707
    DOI: 10.1039/C7NJ01856H

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