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<p>Polymeric micellar sensor bearing pyrene fluorescence probes was developed to detect trifluralin, a toxic hydrophobic nitroaromatic pesticide, in water. It was prepared from poly(<i>N</i>-(1-pyrenemethyl acrylamide))-<i>ran</i>-poly(<i>N</i>-(2-hydroxypropyl)acrylamide) (PPMA-<i>ran</i>-PHPA) copolymer, synthesized via post-polymerization modification of poly(pentafluorophenyl acrylate) (PPFPA). Trifluralin interacts with the pyrene units in the copolymer through π-π stacking interaction, leading to fluorescence quenching within 10&#xa0;min at a low micellar concentration of 0.025&#xa0;mg/mL. A linear relationship was observed in a range of 2-6&#xa0;μg/mL with limit of detection (LOD) of 0.8&#xa0;μg/mL. Additionally, the micellar sensor showed high selectivity against some pesticides and synthetic intermediates.</p> Graphical abstract <p></p>

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Polymeric micellar sensor for nitroaromatic pesticide detection

  • 期刊论文

  • 发表日期：

    2026年2月20日

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  • Tasanaipimol Sivaranon,
  • Panittha Damsongsang,
  • Piyawat Amornthatri,
  • Voravee P. Hoven

摘要

Polymeric micellar sensor bearing pyrene fluorescence probes was developed to detect trifluralin, a toxic hydrophobic nitroaromatic pesticide, in water. It was prepared from poly(N-(1-pyrenemethyl acrylamide))-ran-poly(N-(2-hydroxypropyl)acrylamide) (PPMA-ran-PHPA) copolymer, synthesized via post-polymerization modification of poly(pentafluorophenyl acrylate) (PPFPA). Trifluralin interacts with the pyrene units in the copolymer through π-π stacking interaction, leading to fluorescence quenching within 10 min at a low micellar concentration of 0.025 mg/mL. A linear relationship was observed in a range of 2-6 μg/mL with limit of detection (LOD) of 0.8 μg/mL. Additionally, the micellar sensor showed high selectivity against some pesticides and synthetic intermediates.

Graphical abstract