Crystalline Polyphenylene Covalent Organic Frameworks
Xing Han1,2, Zihui Zhou1,2, Kaiyu Wang1,2
1Department of Chemistry and Kavli Energy Nanoscience Institute, University of California, Berkeley, California 94720, United States.
Abstract:
The synthesis of crystalline polyphenylene covalent organic frameworks (COFs) was accomplished by linking fluorinated tris(4-acetylphenyl)benzene building units using aldol cyclotrimerization. The structures of the two COFs, reported here, were confirmed by powder X-ray diffraction techniques, Fourier transform infrared, and solid-state 13C CP/MAS NMR spectroscopy. The results showed that the COFs were porous and chemically stable in corrosive, harsh environments for at least 1 week. Accordingly, postsynthetically modified derivatives of these COFs using primary amines showed CO2 uptake from air and flue gas.
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