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

Abstract

Stimuli responsive fluorescent materials which can change their optical signal output upon ambient physical or chemical parameters change, exhibit great application potentials for the comprehensive environment 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 for quantitatively detection of three parameters of pH values, sulfite anion and hydrostatic pressure with different molecular states. By the analysis of 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 from 1 atm to 6 GPa with sensing sensitivity of 9.876 nm GPa-1 shift in PL spectra. What’ more, TPE-Sp-CN can quantitatively sense all the three parameters in good linear relationship, which is scarcely repeorted. And it is promising to use TPE-Sp-CN as an indicator to monitor the environments or disasters that are related to the above parameters, such as some harmful geological activities.

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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
Citation: Mater. Chem. Front., 2019, Accepted Manuscript
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    An AIE fluorescent switch with multi-stimuli responsive property and application for quantitatively detecting pH value, sulfite anion and hydrostatic pressure

    T. Lin, X. Su, K. Wang, M. Li, G. Hongwei, L. Liu, B. Zou, Y. Zhang, Y. Liu and S. X. Zhang, Mater. Chem. Front., 2019, Accepted Manuscript , DOI: 10.1039/C8QM00544C

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