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Reference type: Journal
Authors: Gong CB, Ou XX, Liu S, Jin YL, Huang HR, Tang Q, Hon-Wah Lam M, Chow CF, Tang Q
Article Title: A molecular imprinting-based multifunctional chemosensor for phthalate esters.
Publication date: 2017
Journal: Dyes and Pigments
Volume: 137
Page numbers: 499-506.
DOI: 10.1016/j.dyepig.2016.10.047
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0143720816306684

Abstract: This paper reports a molecular imprinting-based fluorescent and solvatochromic multifunctional chemosensor for phthalate esters (PAEs). The multifunctional chemosensor was fabricated through precipitation polymerization using 4-[(1E)-4-(2-hydroxyphenyl) ethenyl]-1-allylpyridinium bromide (HPEAPB) as the functional monomer and phthalamide-4,4'-dibutyl dimethyl ester (PDDB) as the mimic template. The molecular imprinting-based chemosensor shows specific affinity toward PDDB and dibutyl phthalate (DBP) in ethanol. Of note is that the molecular imprinting-based chemosensor shows turn-off fluorescent response toward PAEs in an ethanol solution with a limit of detection of 2.0-x-10-6-mol-L-1 (0.7-ppm) when HPEAPB is in the protonated form (chemosensor 1), and shows solvatochromic properties, fluorescent enhancement and a colorimetric (from orange to bright yellow) response toward PAEs in an ethanol solution with a limit of detection of 4.0-x-10-5-mol-L-1-by the naked eye when HPEAPB is in the deprotonated form (chemosensor 2). This multifunctional chemosensor is promising for the simple, accurate and low-cost detection of trace PAEs
Template and target information: phthalamide-4,4'-dibutyl dimethyl ester, PDDB, mimic template, dibutyl phthalate, DBP
Author keywords: Phthalate acid diesters, Turn-off fluorescent chemosensor, Fluorescent-enhancement chemosensor, Solvatochromism, molecularly imprinted polymer

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