{
  "abstract": "Covalent organic frameworks (COFs) unlock opportunities to unite rapid mass transport with molecular-level sieving through membranes. However, achieving long-range crystallographic order within these membranes remains a central challenge that limits their separation precision. Here, we report a monomer-driven strategy for the ambient-condition fabrication of COF polycrystalline membranes featuring definite lattice order and polyhedral textures, reminiscent of benchmark metal-organic framework counterparts. Using a rigid, π-conjugated pyrene-centered tetraamine, we enable nonepitaxial intergrowth of faceted COF crystals on a porous support, yielding a 350-nanometer-thick membrane with a record-high Brunauer-Emmett-Teller surface area of 2121 square meters per gram among COF separation membranes of comparable pore size. The resulting COF membrane preserves its crystallographic order and polyhedral texture even after 1 month of solvent exposure while uniquely combining increased surface stiffness with high tensile ductility. Notably, we demonstrate its superior liquid-phase molecular selectivity, outperforming COF analogs with considerably smaller pore apertures, and elucidate an unambiguous correlation between crystallographic order and permselectivity. This work positions crystallographic ordering as a guiding principle for COF membranes, opening more possibilities at the intersection of framework materials and separation technologies.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117585, Singapore.",
    "Key Lab of Functional Polymers for Sustainability of Jiangsu, School of Energy and Environment, Southeast University, Nanjing 210096, Jiangsu, P. R. China.",
    "Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Innovis #08-03, Singapore 138634, Singapore.",
    "College of Safety Science and Engineering, Nanjing Tech University, Nanjing 211816, Jiangsu, P. R. China.",
    "Centre for Hydrogen Innovations, National University of Singapore, 1 Engineering Drive 3, Singapore 117580, Singapore.",
    "National University of Singapore (Suzhou) Research Institute, Suzhou 215123, Jiangsu, P. R. China.",
    "National University of Singapore (Chongqing) Research Institute, Chongqing 401120, P. R. China."
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 13,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Xiansong Shi",
      "orcid": "0000-0002-4258-7941"
    },
    {
      "affs": [
        2
      ],
      "name": "Haipei Shao"
    },
    {
      "affs": [
        3
      ],
      "name": "Xin Zhang",
      "orcid": "0000-0002-9291-0671"
    },
    {
      "affs": [
        0
      ],
      "name": "Fen Huang",
      "orcid": "0009-0001-7864-8531"
    },
    {
      "affs": [
        0
      ],
      "name": "Qixing Liu",
      "orcid": "0000-0002-1201-2258"
    },
    {
      "affs": [
        0
      ],
      "name": "He Li",
      "orcid": "0000-0002-3752-281X"
    },
    {
      "affs": [
        0
      ],
      "name": "Wei Zhao",
      "orcid": "0000-0003-0265-2590"
    },
    {
      "affs": [
        0
      ],
      "name": "Junyu Ren"
    },
    {
      "affs": [
        0,
        4
      ],
      "name": "Yunchuan Pu",
      "orcid": "0000-0001-9767-6944"
    },
    {
      "affs": [
        0
      ],
      "name": "Wen-Hua Li"
    },
    {
      "affs": [
        0
      ],
      "name": "Nengxiu Zhu"
    },
    {
      "affs": [
        2
      ],
      "name": "Ming Lin",
      "orcid": "0000-0001-5284-6591"
    },
    {
      "affs": [
        0,
        4,
        5,
        6
      ],
      "name": "Dan Zhao",
      "orcid": "0000-0002-4427-2150"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/2cgy6cg48vc92.bib",
  "cited_by": 0,
  "doi": "10.1126/sciadv.aee9683",
  "fulltext_url": null,
  "id": "2cgy6cg48vc92",
  "issns": [
    "2375-2548"
  ],
  "landing_url": "https://www.science.org/doi/10.1126/sciadv.aee9683",
  "language": null,
  "licence": "CC-BY-NC",
  "licence_label": "CC BY-NC",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by-nc/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2505|Covalent Organic Framework Applications"
    ]
  ],
  "openalex": "W7216160542",
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-02",
  "publisher": "American Association for the Advancement of Science (AAAS)",
  "ris": "https://research.draconitic.com/paper/2cgy6cg48vc92.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:41Z",
      "native_id": "10.1126/sciadv.aee9683",
      "source": "crossref",
      "url": "https://www.science.org/doi/10.1126/sciadv.aee9683"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2505|Covalent Organic Framework Applications",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Precise molecular sieving in polycrystalline covalent organic framework membranes",
  "title_text": "Precise molecular sieving in polycrystalline covalent organic framework membranes",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:41Z",
  "url": "https://research.draconitic.com/paper/2cgy6cg48vc92",
  "venue": "Science Advances",
  "versions": []
}