A molecular imprinting-based multifunctional chemosensor for phthalate esters

Cheng-Bin GONG, Xiao-xiao OU, Song LIU, Yong-lei JIN, Hai-rong HUANG, Qian TANG, Michael Hon Wah LAM, Cheuk Fai Stephen CHOW

Research output: Contribution to journalArticle

9 Citations (Scopus)

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 × 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 × 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. Copyright © 2016 Elsevier Ltd.
Original languageEnglish
Pages (from-to)499-506
JournalDyes and Pigments
Volume137
Early online dateNov 2016
DOIs
Publication statusPublished - Feb 2017

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Esters
Bromides
Ethanol
Dibutyl Phthalate
Monomers
Polymerization
phthalic acid
Costs

Bibliographical note

Gong, C.-b., Ou, X.-x., Liu, S., Jin, Y.-i., Huang, H.-r., Tang, Q., et al. (2017). A molecular imprinting-based multifunctional chemosensor for phthalate esters. Dyes and Pigments, 137, 499-506.

Keywords

  • Phthalate acid diesters
  • Turn-off fluorescent chemosensor
  • Fluorescent-enhancement chemosensor
  • Solvatochromism
  • Molecularly imprinted polymer