An aggregation-induced emission-based fluorescence turn-on probe for Hg and its application to detect Hg in food samples

In this work, we presented a new tetraphenylethene-derived fluorescent probe TPE-M for Hg 2+ detection in an aqueous solution. Probe TPE-M is molecularly dissolved in CH 3 OH/PBS (20 mM, pH = 7.4) (3 : 7, v/v) mixed solution and is almost non-emissive. Reaction of TPE-M with Hg 2+ leads to release o...

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Bibliographic Details
Published in:RSC advances 2019-07, Vol.9 (4), p.23316-23323
Main Authors: Tang, Lijun, Yu, Haili, Zhong, Keli, Gao, Xue, Li, Jianrong
Format: Article
Language:English
Online Access:Get full text
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Summary:In this work, we presented a new tetraphenylethene-derived fluorescent probe TPE-M for Hg 2+ detection in an aqueous solution. Probe TPE-M is molecularly dissolved in CH 3 OH/PBS (20 mM, pH = 7.4) (3 : 7, v/v) mixed solution and is almost non-emissive. Reaction of TPE-M with Hg 2+ leads to release of an AIE-active precursor 4 , and results in a significant fluorescence enhancement. The Hg 2+ recognition process has some distinct advantages including rapid response, high selectivity and sensitivity, strong anti-interference ability, and a low detection limit (4.16 × 10 −6 M). Moreover, the probe is applicable to detect Hg 2+ in real food samples such as shrimp, crab and teas, suggesting the practical applicability of TPE-M . A new AIE-based fluorescent probe TPE-M for Hg 2+ detection in an aqueous solution has been developed.
ISSN:2046-2069
DOI:10.1039/c9ra04440j