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A bi-component supramolecular gel for selective fluorescence detection and removal of Hg2+ in water

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Abstract

A bi-component supramolecular gel (RQ) was successfully constructed by the assembly of the gelators 4-aminophenyl functionalized naphthalimide derivative (R) and tri-(pyridine-4-yl)-functionalized trimesic amide (Q) in DMSO–H2O (6.1 : 3.9, v/v) binary solution. The gel RQ exhibits excellent self-healing capacity. Interestingly, the RQ could fluorescently detect and reversibly remove Hg2+ from water through cation–π interactions with high selectivity, efficient adsorption and quick response. The limit of lowest detection (LOD) of the RQ for Hg2+ is 4.52 × 10−8 M and the separation ratio is 91.14%. Moreover, the RQ could be efficiently recycled and regenerated with little loss via a simple treatment by I. Notably, thin films based on RQ and RQ + Hg2+ were prepared, which could serve as convenient and efficient test tools for the detection of Hg2+ and I, respectively. This work provided an efficient method and novel supramolecular gel material for the separation and detection of Hg2+.

Graphical abstract: A bi-component supramolecular gel for selective fluorescence detection and removal of Hg2+ in water

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Publication details

The article was received on 14 Aug 2019, accepted on 28 Oct 2019 and first published on 29 Oct 2019


Article type: Paper
DOI: 10.1039/C9SM01652J
Soft Matter, 2019, Advance Article

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    A bi-component supramolecular gel for selective fluorescence detection and removal of Hg2+ in water

    H. Yang, X. Sun, Y. Zhang, Z. Wang, W. Zhu, Y. Fan, T. Wei, H. Yao and Q. Lin, Soft Matter, 2019, Advance Article , DOI: 10.1039/C9SM01652J

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