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<p>Perchlorate is a toxic, explosive, and water-soluble pollutant but while efficient and low-cost removal of ClO<sub>4</sub><sup>−</sup> from water is an important challenge, suitable methods for precipitation of ClO<sub>4</sub><sup>−</sup> from water are underdeveloped. Here, we demonstrate a hydrogen-bonded supramolecular polymer network crystal (<b>HBPC</b>) for efficient complexation of ClO<sub>4</sub><sup>−</sup>. The <b>HBPC</b> network is constructed by an A,A’-bis-pyridyl-hydrazone-phenyl conjugate-functionalized pillar[5]arene (<b>PYP5</b>), which self-assembles via the formation of clustered hydrogen-bonds. Two-pyridyl-hydrazone moieties provide coordination sites while the eight ethoxyl moieties on the pillar[5]arene enable multiple hydrogen bonding motifs to tightly bind to the ClO<sub>4</sub><sup>−</sup>. The <b>HBPC</b> network therefore adsorbs ClO<sub>4</sub><sup>−</sup> ions and facilitates the separation of these ions from water.</p>

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Hydrogen-bonded supramolecular polymer networks for effective removal of perchlorate in water via clustered hydrogen-bonding

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年7月14日

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  • Jintao Tian,
  • Xing Han,
  • Hao-Ran Yang,
  • Juan Liu,
  • Jin-Fa Chen,
  • Tai-Bao Wei,
  • Hong Yao,
  • Wen-Juan Qu,
  • Bingbing Shi,
  • Qi Lin

摘要

Perchlorate is a toxic, explosive, and water-soluble pollutant but while efficient and low-cost removal of ClO4− from water is an important challenge, suitable methods for precipitation of ClO4− from water are underdeveloped. Here, we demonstrate a hydrogen-bonded supramolecular polymer network crystal (HBPC) for efficient complexation of ClO4−. The HBPC network is constructed by an A,A’-bis-pyridyl-hydrazone-phenyl conjugate-functionalized pillar[5]arene (PYP5), which self-assembles via the formation of clustered hydrogen-bonds. Two-pyridyl-hydrazone moieties provide coordination sites while the eight ethoxyl moieties on the pillar[5]arene enable multiple hydrogen bonding motifs to tightly bind to the ClO4−. The HBPC network therefore adsorbs ClO4− ions and facilitates the separation of these ions from water.