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Selective Mercury(II) Detection in Aqueous Solutions Upon the Absorption Changes Corresponding to the Transition Moments Polarized Along the Short Axis of an Azobenzene Chemosensor

Abstract

A complete water soluble azobenzene chemosensor 1 for selective detection of Hg2+ was synthesized. Taking advantage of the absorption changes corresponding to the transition moments polarized along the short axis of azobenzene, 1 showed characteristic UV-Vis signal changes at the band around 240 nm for Hg2+ under wide pH ranges, which also showed good tolerance with various metal ions and photoirradiations. Upon addition of Hg2+ into the solution of 1, a favored formation of trans-1 was observed, which attributes to an intramolecular coordination of PEG chain and Nβ to Hg2+ confirmed by a control experiment test.

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Article information


Submitted
14 Nov 2019
Accepted
06 Jan 2020
First published
06 Jan 2020

Analyst, 2020, Accepted Manuscript
Article type
Communication

Selective Mercury(II) Detection in Aqueous Solutions Upon the Absorption Changes Corresponding to the Transition Moments Polarized Along the Short Axis of an Azobenzene Chemosensor

L. Zhang, Z. Tang, L. Hou, Y. Qu, Y. Deng, C. Zhang, C. Xie and Z. Wu, Analyst, 2020, Accepted Manuscript , DOI: 10.1039/C9AN02286D

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