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|a 10.1002/adma.202300525
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|a eng
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| 100 |
1 |
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|a Burke, David W
|e verfasserin
|4 aut
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| 245 |
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|a 2D Covalent Organic Framework Membranes for Liquid-Phase Molecular Separations
|b State of the Field, Common Pitfalls, and Future Opportunities
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|c 2024
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|a Text
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Revised 04.01.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2023 The Authors. Advanced Materials published by Wiley-VCH GmbH.
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|a 2D covalent organic frameworks (2D COFs) are attractive candidates for next-generation membranes due to their robust linkages and uniform, tunable pores. Many publications have claimed to achieve selective molecular transport through COF pores, but reported performance metrics for similar networks vary dramatically, and in several cases the reported experiments are inadequate to support such conclusions. These issues require a reevaluation of the literature. Published examples of 2D COF membranes for liquid-phase separations can be broadly divided into two categories, each with common performance characteristics: polycrystalline COF films (most >1 µm thick) and weakly crystalline or amorphous films (most <500 nm thick). Neither category has demonstrated consistent relationships between the designed COF pore structure and separation performance, suggesting that these imperfect materials do not sieve molecules through uniform pores. In this perspective, rigorous practices for evaluating COF membrane structures and separation performance are described, which will facilitate their development toward molecularly precise membranes capable of performing previously unrealized chemical separations. In the absence of this more rigorous standard of proof, reports of COF-based membranes should be treated with skepticism. As methods to control 2D polymerization improve, precise 2D polymer membranes may exhibit exquisite and energy efficient performance relevant for contemporary separation challenges
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|a Journal Article
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|a Review
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|a 2D polymers
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4 |
|a covalent organic frameworks
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|a membranes
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4 |
|a polymer thin films
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| 700 |
1 |
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|a Jiang, Zhiwei
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Livingston, Andrew G
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Dichtel, William R
|e verfasserin
|4 aut
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 36(2024), 1 vom: 03. Jan., Seite e2300525
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|g year:2024
|g number:1
|g day:03
|g month:01
|g pages:e2300525
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|u http://dx.doi.org/10.1002/adma.202300525
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