Highly selective iodide-responsive gel-sol state transition in supramolecular hydrogels

被引：74

作者：

Shen, Jiang-Shan ^{[1
]}

Li, Dong-Hua ^{[1
]}

Cai, Qing-Guo ^{[1
]}

Jiang, Yun-Bao ^{[1
]}

机构：

[1] Xiamen Univ, Dept Chem, Coll Chem & Chem Engn, MOE Key Lab Ananlyt Sci, Xiamen 361005, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2009年 / 19卷 / 34期

关键词：

ANION RECOGNITION; MOLECULAR RECOGNITION; GOLD NANOPARTICLES; CHIRAL RECOGNITION; TRIPODAL RECEPTOR; CRYSTAL-STRUCTURE; DRUG-DELIVERY; AMINO-ACID; STIMULI; COMPLEX;

D O I：

10.1039/b908755a

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We demonstrate for the first time a highly selective anion-responsive reversible gel-sol state transition in a supramolecular hydrogel of Ag(I)-glutathione (GSH) coordination polymers, which allows for facile and selective visual recognition of I- via naked eyes even in a strongly colored and/or fluorescent background. Such a strategy overcomes the drawback of spectral interferences which are often encountered in conventional colorimetric and fluorimetric means. It was rationalized that I- functioned as a depolymerizing agent for the Ag(I)-GSH supramolecular hydrogels. A feasible quantitative assay for I- was established that afforded satisfactory results for simulated wastewater samples. We believe that this strategy can in principle be applicable to other species by following a smart gel-sol state transition in designed supramolecular hydrogel.

引用

页码：6219 / 6224

页数：6

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