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Issue 6, 2019
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An AIE fluorescent switch with multi-stimuli responsive properties and applications for quantitatively detecting pH value, sulfite anion and hydrostatic pressure

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Abstract

Stimuli-responsive fluorescent materials which can change their optical signal outputs upon changes in ambient physical or chemical parameters exhibit great application potential for comprehensive environmental monitoring. In this article, a new aggregation-induced emission fluorescent switch, 1',3′,3′-trimethyl-5′-(4-(1,2,2-triphenylvinyl)phenyl)spiro[chromene-2,2′-indoline]-6-carbonitrile (TPE-Sp-CN), was synthesized and applied in the quantitative detection of three parameters, namely pH value, sulfite anion and hydrostatic pressure, with different molecular states. According to the analysis of the optical spectra, TPE-Sp-CN can distinguish water pH values from 0 to 4, the detection limit of sulfite anion is 1.04 ppm, and the pressure sensing range is 1 atm to 6 GPa with the sensing sensitivity of a 9.876 nm GPa−1 shift in the PL spectrum. Furthermore, TPE-Sp-CN can quantitatively sense all three parameters with good linear relationships, which is rarely reported. Also, it is promising to use TPE-Sp-CN as an indicator to monitor the environment or disasters that are related to the above parameters, such as harmful geological activities.

Graphical abstract: An AIE fluorescent switch with multi-stimuli responsive properties and applications for quantitatively detecting pH value, sulfite anion and hydrostatic pressure

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Publication details

The article was received on 24 Oct 2018, accepted on 07 Jan 2019 and first published on 10 Jan 2019


Article type: Research Article
DOI: 10.1039/C8QM00544C
Mater. Chem. Front., 2019,3, 1052-1061

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    An AIE fluorescent switch with multi-stimuli responsive properties and applications for quantitatively detecting pH value, sulfite anion and hydrostatic pressure

    T. Lin, X. Su, K. Wang, M. Li, H. Guo, L. Liu, B. Zou, Y. Zhang, Y. Liu and S. X. Zhang, Mater. Chem. Front., 2019, 3, 1052
    DOI: 10.1039/C8QM00544C

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