title: Two-dimensional covalent organic frameworks for carbon dioxide capture through channel-wall functionalization.
abstract: Ordered open channels found in two-dimensional covalent organic frameworks (2D COFs) could enable them to adsorb carbon dioxide. However, the frameworks' dense layer architecture results in low porosity that has thus far restricted their potential for carbon dioxide adsorption. Here we report a strategy for converting a conventional 2D COF into an outstanding platform for carbon dioxide capture through channel-wall functionalization. The dense layer structure enables the dense integration of functional groups on the channel walls, creating a new version of COFs with high capacity, reusability, selectivity, and separation productivity for flue gas. These results suggest that channel-wall functional engineering could be a facile and powerful strategy to develop 2D COFs for high-performance gas storage and separation.
authors.affiliation: Department of Materials Molecular Science, Institute for Molecular Science, National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji, Okazaki 444-8787 (Japan).
authors.forename: Ning
authors.initials: N
authors.lastname: Huang
authors.forename: Xiong
authors.initials: X
authors.lastname: Chen
authors.forename: Rajamani
authors.initials: R
authors.lastname: Krishna
authors.forename: Donglin
authors.initials: D
authors.lastname: Jiang
keywords: carbon dioxide; covalent organic frameworks; flue gas separation; gas adsorption; synthesis