A Robust Binary Supramolecular Organic Framework (SOF) with high CO2adsorption and selectivity

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Abstract

A robust binary hydrogen-bonded supramolecular organic framework (SOF-7) has been synthesized by solvothermal reaction of 1,4-bis-(4-(3,5-dicyano-2,6-dipyridyl)dihydropyridyl)benzene (1) and 5,5-bis-(azanediyl)-oxalyl-diisophthalic acid (2). Single crystal X-ray diffraction analysis shows that SOF-7 comprises 2 and 1,4-bis-(4-(3,5-dicyano-2,6-dipyridyl)pyridyl)benzene (3); the latter formed in situ from the oxidative dehydrogenation of 1. SOF-7 shows a three-dimensional four-fold interpenetrated structure with complementary O-H···N hydrogen bonds to form channels that are decorated with cyano and amide groups. SOF-7 exhibits excellent thermal stability and solvent and moisture durability as well as permanent porosity. The activated desolvated material SOF-7a shows high CO2adsorption capacity and selectivity compared with other porous organic materials assembled solely through hydrogen bonding.

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Lü, J., Perez-Krap, C., Suyetin, M., Alsmail, N. H., Yan, Y., Yang, S., … Schröder, M. (2014). A Robust Binary Supramolecular Organic Framework (SOF) with high CO2adsorption and selectivity. Journal of the American Chemical Society, 136(37), 12828–12831. https://doi.org/10.1021/ja506577g

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