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<p>In this work, we present the synthesis of a pillar[5]arene-based microporous organic network (MON) and its combination with magnetic microspheres to construct novel MP[5]A-MON composites for efficient magnetic solid-phase extraction (MSPE) of four phthalate esters (PAEs) from complex samples. The designed MP[5]A-MON composites integrate the advantages of Fe<sub>3</sub>O<sub>4</sub>, pillar[5]arene macrocycles, and MON networks, providing multiple interaction sites, including host-guest, π–π stacking, and hydrophobic interactions, along with rapid magnetic separation (&lt; 15&#xa0;s) for PAE extraction. Under optimized conditions, the established MP[5]A-MON-MSPE-HPLC-UV method demonstrates wide linear ranges (0.5–1000&#xa0;µg/L), low limits of detection (0.15–0.75&#xa0;µg/L), high enrichment factors (94.9–97.1), minimal adsorbent consumption (4&#xa0;mg), and a short extraction time (6&#xa0;min). This study not only pioneers a new category of MON materials but also highlights the potential of pillar[n]arene-based MONs in the enrichment and separation of environmental contaminants.</p>

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Fabrication of Novel Pillar[5]arene-based Magnetic Microporous Organic Networks for Efficient Extraction and Sensitive Determination of Phthalate Esters

  • 期刊论文

  • 发表日期：

    2026年2月13日

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  • Jin-yuan Su,
  • Shuai Cai,
  • Xi-xi Wang,
  • Yuan-yuan Cui,
  • Cheng-xiong Yang

摘要

In this work, we present the synthesis of a pillar[5]arene-based microporous organic network (MON) and its combination with magnetic microspheres to construct novel MP[5]A-MON composites for efficient magnetic solid-phase extraction (MSPE) of four phthalate esters (PAEs) from complex samples. The designed MP[5]A-MON composites integrate the advantages of Fe3O4, pillar[5]arene macrocycles, and MON networks, providing multiple interaction sites, including host-guest, π–π stacking, and hydrophobic interactions, along with rapid magnetic separation (< 15 s) for PAE extraction. Under optimized conditions, the established MP[5]A-MON-MSPE-HPLC-UV method demonstrates wide linear ranges (0.5–1000 µg/L), low limits of detection (0.15–0.75 µg/L), high enrichment factors (94.9–97.1), minimal adsorbent consumption (4 mg), and a short extraction time (6 min). This study not only pioneers a new category of MON materials but also highlights the potential of pillar[n]arene-based MONs in the enrichment and separation of environmental contaminants.