Issue 84, 2017

A novel self-assembled supramolecular sensor based on thiophene-functionalized imidazophenazine for dual-channel detection of Ag+ in an aqueous solution

Abstract

Herein, a novel self-assembled supramolecular sensor (S1) based on thiophene-functionalized imidazophenazine for Ag+ was designed and synthesized. It showed dual-channel detection properties for Ag+ based on the competitive mechanism of supramolecular self-assembly with high sensitivity and selectivity even in the presence of other metal ions. Its detection limit for Ag+ is 8.18 × 10−9 M. Upon the addition of Ag+, the solution changes from yellow to light purple and the fluorescence is quenched. Furthermore, the sensing mechanism between Ag+ and S1 is investigated via IR and 1H NMR spectroscopy, mass spectrometry, and density functional theory calculations.

Graphical abstract: A novel self-assembled supramolecular sensor based on thiophene-functionalized imidazophenazine for dual-channel detection of Ag+ in an aqueous solution

Supplementary files

Article information

Article type
Paper
Submitted
29 8 2017
Accepted
07 11 2017
First published
21 11 2017
This article is Open Access
Creative Commons BY license

RSC Adv., 2017,7, 53439-53444

A novel self-assembled supramolecular sensor based on thiophene-functionalized imidazophenazine for dual-channel detection of Ag+ in an aqueous solution

H. Shi, W. Li, Q. Li, H. Zhang, Y. Zhang, T. Wei, Q. Lin and H. Yao, RSC Adv., 2017, 7, 53439 DOI: 10.1039/C7RA09597J

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