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Issue 34, 2009
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Highly selective iodide-responsive gel–sol state transition in supramolecular hydrogels

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Abstract

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 Ivia 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.

Graphical abstract: Highly selective iodide-responsive gel–sol state transition in supramolecular hydrogels

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Publication details

The article was received on 05 May 2009, accepted on 10 Jun 2009 and first published on 08 Jul 2009


Article type: Paper
DOI: 10.1039/B908755A
Citation: J. Mater. Chem., 2009,19, 6219-6224
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    Highly selective iodide-responsive gel–sol state transition in supramolecular hydrogels

    J. Shen, D. Li, Q. Cai and Y. Jiang, J. Mater. Chem., 2009, 19, 6219
    DOI: 10.1039/B908755A

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