Royal Society of Chemistry, Chemical Communications, 29(46), p. 5223
DOI: 10.1039/c0cc00779j
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Cavities up to 4 nm have been introduced into a hierarchically-assembled metal-organic framework by adopting an angular, semi-flexible tetratopic ligand. The resulting MOF possesses permanent porosity and exhibits stepwise sorption isotherms for O(2) and N(2) gases.