Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 13, Issue 31, Pages 37484-37489Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.1c08854
Keywords
quinoxaline; nanoporous; modifiable materials; membrane filtration; covalent organic framework; COF
Funding
- Department of Energy-BES grant [DE-SC0020100]
- National Institute of General Medical Sciences from the National Institutes of Health [P20GM103432]
- Wyoming NASA Space Grant Consortium, NASA [80NSSC20M0113, 80NSSC19M0061]
- National Science Foundation [ECCS: 2025298, NSF-DMR-BMAT-1809645]
- Nebraska Research Initiative
- Magnetic Resonance Research Center, Chemical and Environmental Characterization Core Facilities at Arizona State University
- Department of Defense-Army Research Office (DOD-ARO) [W911-NF19-10152]
- U.S. Department of Energy (DOE) [DE-SC0020100] Funding Source: U.S. Department of Energy (DOE)
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A new synthetic protocol for highly ordered two-dimensional nanoporous covalent organic frameworks (2D-COFs) based on a quinoxaline backbone is reported in this study. The quinoxaline framework allows for postsynthetic modification by incorporating two different chemical functionalities within the nanopores, including layer-to-layer cross-linking. Membranes fabricated using this new 2D-COF demonstrate highly selective separations and significant performance enhancement post cross-linking.
We report a new synthetic protocol for preparing highly ordered two-dimensional nanoporous covalent organic frameworks (2D-COFs) based on a quinoxaline backbone. The quinoxaline framework represents a new type of COF that enables postsynthetic modification by placing two different chemical functionalities within the nanopores including layer-to-layer cross-linking. We also demonstrate that membranes fabricated using this new 2D-COF perform highly selective separations resulting in dramatic performance enhancement post cross-linking.
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