Scalable Art-Inspired Tessellated Covalent Organic Framework Membranes Enable Highly Selective Ion Separation.

Zhenyi Zhao, Rui Guo, Tianxiang Yang, Zhi Wang, Tiezheng Tong, Yawei Du, Song Zhao

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Article in Angewandte Chemie (International ed. in English), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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Authors and funding

7 authors.

Zhenyi ZhaoSchool of Chemical Engineering and Technology, Tianjin University, Tianjin, P. R. China.ORCID https://orcid.org/0009-0001-7550-8912

Rui GuoSchool of Chemical Engineering and Technology, Tianjin University, Tianjin, P. R. China.

Tianxiang YangSchool of Chemical Engineering and Technology, Tianjin University, Tianjin, P. R. China.

Zhi WangSchool of Chemical Engineering and Technology, Tianjin University, Tianjin, P. R. China.ORCID https://orcid.org/0000-0001-7524-0322

Tiezheng TongSchool of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, Arizona, USA.ORCID https://orcid.org/0000-0002-9289-3330

Yawei DuSchool of Chemical Engineering and Technology, Engineering Research Center of Seawater Utilization of Ministry of Education, Hebei University of Technology, Tianjin, P. R. China.ORCID https://orcid.org/0000-0001-8396-9949

Song ZhaoSchool of Chemical Engineering and Technology, Tianjin University, Tianjin, P. R. China.ORCID https://orcid.org/0000-0002-7192-5540

Funding

National Natural Science Foundation of China 22278304State Key Laboratory of Chemical Engineering and Low-Carbon Technology SKL-ChE-23T07

6 · The paper itself

Abstract

Covalent organic frameworks (COFs), distinguished by their periodic and tunable network structures, exhibit great potential for molecular and ionic separation. Nevertheless, fabricating COF membranes with angstrom-scale pores faces challenges in precisely controlling channel dimensions and achieving seamless integration of frameworks. Here, we report the synthesis of a substoichiometric aminal-linked COF with a pore size of ∼5 Å and develop a covalent tessellation strategy inspired by Escher's art and derived from interfacial polymerization, that successfully fabricates defect-free tessellated COF (tCOF) membranes. The resulting tCOF membrane exhibits ultra-microporous structures, achieving high water permeance of 10.2 L m

Indexed as

aminal‐linked covalent organic frameworkion separationmembranenanofiltrationtessellated pattern

Identifiers

PMID42390840

DOI10.1002/anie.3730617

PMCPMC13528465

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