Photo-tailored heterocrystalline covalent organic framework membranes for organics separation

Jinqiu Yuan, Xinda You, Niaz Ali Khan, Runlai Li, Runnan Zhang, Jianliang Shen, Li Cao, Mengying Long, Yanan Liu, Zijian Xu, Hong Wu, Zhongyi Jiang

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


Organics separation for purifying and recycling environment-detrimental solvents is essential to sustainable chemical industries. Covalent organic framework (COF) membranes hold great promise in affording precise and fast organics separation. Nonetheless, how to well coordinate facile processing—high crystalline structure—high separation performance remains a critical issue and a grand challenge. Herein, we propose a concept of heterocrystalline membrane which comprises high-crystalline regions and low-crystalline regions. The heterocrystalline COF membranes are fabricated by a two-step procedure, i.e., dark reaction for the construction of high-crystalline regions followed by photo reaction for the construction of low-crystalline regions, thus linking the high-crystalline regions tightly and flexibly, blocking the defect in high-crystalline regions. Accordingly, the COF membrane exhibits sharp molecular sieving properties with high organic solvent permeance up to 44-times higher than the state-of-the-art membranes.
Original languageEnglish (US)
JournalNature Communications
Issue number1
StatePublished - Dec 1 2022
Externally publishedYes

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Chemistry(all)
  • Physics and Astronomy(all)


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