Scholarlink

<p>Nanoporous carbon-based materials with precise molecular discrimination and scalable processability hold great promise for next-generation sustainable membranes in organic solvent nanofiltration, which is an energy-efficient alternative to traditional separation methods. However, simultaneously achieving both high selectivity and ultrafast solvent permeance remains substantially challenging due to difficulties in fabricating long-range ordered films and engineering microstructures with molecular-level precision. Here we report the design and wafer-scale fabrication of ultrathin, crystalline triptycene-based conjugated polymer framework (TPC–CPF) membranes featuring fully <i>π</i>-conjugated carbon backbones and exceptional mechanical robustness, surpassing that of other carbon-based membranes. Benefitting from the ordered one-dimensional through-channels bridged by rigid diacetylenic linkages, TPC–CPF membranes achieve precise molecular sieving with unprecedented permeance, surpassing state-of-the-art organic solvent nanofiltration membranes and exceeding commercial counterparts by two to three orders of magnitude at comparable molecular weight cutoffs. With robust mechanical, chemical and thermal stabilities under harsh solvents and high temperatures, TPC–CPF membranes enable more than 99% long-term recovery and reuse of homogeneous noble-metal catalysts under industrial conditions. Moreover, the pore-size tunability of TPC–CPF membranes facilitates efficient continuous and cascade separation of complex pharmaceutical mixtures, delivering 14–32 times higher separation efficiencies than commercial membranes. These findings position TPC–CPF membranes as a transformative platform for sustainable, high-precision separations in chemically demanding industrial environments.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

High-strength conjugated polymer framework membranes for ultrafast and precise separations

  • 期刊论文

  • 发表日期：

    2025年12月22日

查看全文
  • Jiaqiang Li,
  • Qing Liu,
  • Jie Shen,
  • Li Cao,
  • Yichen Cai,
  • Wangxin Zhou,
  • Hui Zhang,
  • Xixiang Zhang,
  • Yu Han,
  • Zhiping Lai

摘要

Nanoporous carbon-based materials with precise molecular discrimination and scalable processability hold great promise for next-generation sustainable membranes in organic solvent nanofiltration, which is an energy-efficient alternative to traditional separation methods. However, simultaneously achieving both high selectivity and ultrafast solvent permeance remains substantially challenging due to difficulties in fabricating long-range ordered films and engineering microstructures with molecular-level precision. Here we report the design and wafer-scale fabrication of ultrathin, crystalline triptycene-based conjugated polymer framework (TPC–CPF) membranes featuring fully π-conjugated carbon backbones and exceptional mechanical robustness, surpassing that of other carbon-based membranes. Benefitting from the ordered one-dimensional through-channels bridged by rigid diacetylenic linkages, TPC–CPF membranes achieve precise molecular sieving with unprecedented permeance, surpassing state-of-the-art organic solvent nanofiltration membranes and exceeding commercial counterparts by two to three orders of magnitude at comparable molecular weight cutoffs. With robust mechanical, chemical and thermal stabilities under harsh solvents and high temperatures, TPC–CPF membranes enable more than 99% long-term recovery and reuse of homogeneous noble-metal catalysts under industrial conditions. Moreover, the pore-size tunability of TPC–CPF membranes facilitates efficient continuous and cascade separation of complex pharmaceutical mixtures, delivering 14–32 times higher separation efficiencies than commercial membranes. These findings position TPC–CPF membranes as a transformative platform for sustainable, high-precision separations in chemically demanding industrial environments.