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<p>Chiral supramolecular polyelectrolyte nanoporous membranes (CSPPMs) are increasingly important owing to their potential applications in sensing, separation technology, and bioengineering. However, developing such membranes remains challenging due to the lack of suitable synthetic approaches. Herein, we introduce a facile and conceptual approach that uses water molecules as dynamic crosslinkers and pore-forming agents to create CSPPMs from single-component chiral poly(ionic liquid)s. The experimental and theoretical calculation results demonstrated that the supramolecular network of CSPPMs was crosslinked by hydrogen (H)-bonding, C–H⋯<i>π</i>, electrostatic, and <i>π</i>-<i>π</i> interactions. During pore architecture formation in the membranes, an intriguing chiral amplification phenomenon was observed. This phenomenon, combined with the unique fluorescence properties and high enantioselectivity of CSPPMs toward chiral guest molecules, enables easy discrimination of enantiomers under UV lamps or even with the naked eye. The knowledge gained from this fundamental study could serve as a springboard for developing multifunctional chiral polyelectrolyte membranes for diverse applications.</p>

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Chiral supramolecular poly(ionic liquid) nanoporous membranes: scalable synthesis, properties, and performance in chiral recognition

  • 期刊论文

  • 发表日期：

    2025年8月25日

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  • Qiuting He,
  • Fangfang Xue,
  • Yu Qi,
  • Binmin Wang,
  • Yonglei Wang,
  • Ying Zhuo,
  • Hong Wang

摘要

Chiral supramolecular polyelectrolyte nanoporous membranes (CSPPMs) are increasingly important owing to their potential applications in sensing, separation technology, and bioengineering. However, developing such membranes remains challenging due to the lack of suitable synthetic approaches. Herein, we introduce a facile and conceptual approach that uses water molecules as dynamic crosslinkers and pore-forming agents to create CSPPMs from single-component chiral poly(ionic liquid)s. The experimental and theoretical calculation results demonstrated that the supramolecular network of CSPPMs was crosslinked by hydrogen (H)-bonding, C–H⋯π, electrostatic, and π-π interactions. During pore architecture formation in the membranes, an intriguing chiral amplification phenomenon was observed. This phenomenon, combined with the unique fluorescence properties and high enantioselectivity of CSPPMs toward chiral guest molecules, enables easy discrimination of enantiomers under UV lamps or even with the naked eye. The knowledge gained from this fundamental study could serve as a springboard for developing multifunctional chiral polyelectrolyte membranes for diverse applications.