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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 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, post-synthetically modified derivatives of these COFs using primary amines showed CO2 uptake from air and flue gas.
Supplementary materials
Title
Crystalline Polyphenylene Covalent Organic Frameworks
Description
Detailed experimental section, Characterization including X-ray diffraction, Fourier-transform infrared spectroscopy, solid-state nuclear magnetic resonance spectroscopy, and thermogravimetric analysis.
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