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

被引：16

作者：

Shi, Hai-Xiong ^{[1
]}

Li, Wen-Ting ^{[1
]}

Li, Qiao ^{[1
]}

Zhang, Hai-Li ^{[1
]}

Zhang, You-Ming ^{[1
]}

Wei, Tai-Bao ^{[1
]}

Lin, Qi ^{[1
]}

Yao, Hong ^{[1
]}

机构：

[1] Northwest Normal Univ, Key Lab Ecoenvironm Related Polymer Mat, Minist Educ China, Coll Chem & Chem Engn,Key Lab Polymer Mat Gansu P, Lanzhou 730070, Gansu, Peoples R China

来源：

RSC ADVANCES | 2017年 / 7卷 / 84期

基金：

中国国家自然科学基金;

关键词：

HIGHLY SELECTIVE FLUORESCENT; COLORIMETRIC SENSOR; ION DETECTION; SILVER; CHEMOSENSOR; WATER; PROBE; HG2+; NANOPARTICLES; HYPOCHLORITE;

D O I：

10.1039/c7ra09597j

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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 x 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 H-1 NMR spectroscopy, mass spectrometry, and density functional theory calculations.

引用

页码：53439 / 53444

页数：6

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