Photoresponsive surface molecularly imprinted polymers for the detection of profenofos in tomato and mangosteen

Mei-jun CHEN, Hai-lin YANG, Ya-min SI, Qian TANG, Cheuk Fai Stephen CHOW, Cheng-bin GONG

Research output: Contribution to journalArticlespeer-review

Abstract

As a moderately toxic organophosphorus pesticide, profenofos (PFF) is widely used in agricultural practice, resulting in the accumulation of a high amount of PFF in agricultural products and the environment. This will inevitably damage our health. Therefore, it is important to establish a convenient and sensitive method for the detection of PFF. This paper reports a photoresponsive surface-imprinted polymer based on poly(styrene-co-methyl acrylic acid) (PS-co-PMAA@PSMIPs) for the detection of PFF by using carboxyl-capped polystyrene microspheres (PS-co-PMAA), PFF, 4-((4-(methacryloyloxy)phenyl)diazenyl) benzoic acid, and triethanolamine trimethacrylate as the substrate, template, functional monomer, and cross-linker, respectively. PS-co-PMAA@PSMIP shows good photoresponsive properties in DMSO/H2O (3:1, v/v). Its photoisomerization rate constant exhibits a good linear relationship with PFF concentration in the range of 0~15 μmol/L. PS-co-PMAA@PSMIP was applied for the determination of PFF in spiked tomato and mangosteen with good recoveries ranging in 94.4–102.4%. Copyright © 2020 Chen, Yang, Si, Tang, Chow and Gong.
Original languageEnglish
Article number583036
JournalFrontiers in Chemistry
Volume8
Early online date09 Oct 2020
DOIs
Publication statusPublished - Oct 2020

Citation

Chen, M.-J., Yang, H.-L., Si, Y.-M., Tang, Q., Chow, C.-F., & Gong, C.-B. (2020). Photoresponsive surface molecularly imprinted polymers for the detection of profenofos in tomato and mangosteen. Frontiers in Chemistry, 8. Retrieved from https://doi.org/10.3389/fchem.2020.583036

Keywords

  • Photoresponsive materials
  • Surface molecularly imprinted polymer
  • Azobenzene
  • Profenofos
  • Organophosphorus pesticide

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