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

Jintao Tian, Xing Han, Hao-Ran Yang, Juan Liu, Jin-Fa Chen, Tai-Bao Wei, Hong Yao, Wen-Juan Qu, Bingbing Shi and Qi Lin ()
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Jintao Tian: Northwest Normal University
Xing Han: Northwest Normal University
Hao-Ran Yang: Northwest Normal University
Juan Liu: Northwest Minzu University (Northwest University for Nationalities)
Jin-Fa Chen: Northwest Normal University
Tai-Bao Wei: Northwest Normal University
Hong Yao: Northwest Normal University
Wen-Juan Qu: Northwest Normal University
Bingbing Shi: Northwest Normal University
Qi Lin: Northwest Normal University

Nature Communications, 2025, vol. 16, issue 1, 1-8

Abstract: Abstract 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.

Date: 2025
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DOI: 10.1038/s41467-025-61910-y

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