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A highly selective TPE-based AIE fluorescent probe is developed for the detection of Ag.

ABSTRACT: The detection of Ag⁺ in the environment is very important to determine the level of pollution from silver complexes, which have caused various human health problems. Herein, an aggregation-induced emission (AIE) chromophore (tetraphenylethane, TPE) attached to a benzimidazole group (tetra-benzimidazole, TBI-TPE) is synthesized and utilized to detect Ag⁺ in the environment. The strong chelating effect between the benzimidazole group and Ag⁺ leads to the formation of aggregates, and strong yellow fluorescence signals were observed after adding Ag⁺ into a TBI-TPE solution. The stoichiometry of the complex of TBI-TPE and Ag⁺ was established to be 1 : 2 using photochemical and mass spectra measurements. The detection limit of the Ag⁺ assay is 90 nM with a linear range from 100 nM to 6 μM. This study provides a facile method to determine Ag⁺ in real environmental samples with satisfactory results.

SUBMITTER: Lu Z

PROVIDER: S-EPMC9080746 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature

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A highly selective TPE-based AIE fluorescent probe is developed for the detection of Ag.

Lu Zhixiang Z Liu Yunming Y Lu Shuhan S Li Yuan Y Liu Xiaolan X Qin Yu Y Zheng Liyan L

RSC advances 20180530 35

The detection of Ag+ in the environment is very important to determine the level of pollution from silver complexes, which have caused various human health problems. Herein, an aggregation-induced emission (AIE) chromophore (tetraphenylethane, TPE) attached to a benzimidazole group (tetra-benzimidazole, TBI-TPE) is synthesized and utilized to detect Ag+ in the environment. The strong chelating effect between the benzimidazole group and Ag+ leads to the formation ...[more]

PMID: 35541010

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