Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 3, Issue 32, Pages 16627-16632Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ta03886c
Keywords
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Funding
- National Natural Science Foundation of China [21373095, 21371067, 21171064]
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Two porous MOFs, [NO3][In3OL3]center dot 4DMF center dot 3H(2)O (JLU-Liu18) and [CdL]center dot 0.5DMF (JLU-Liu19), H2L - pyridine-3,5- bis(phenyl-4-carboxylic acid), have been solvothermally synthesized and structurally characterized. Both of the two compounds possess a saturated coordination metal centre without open metal sites (OMSs) leading to remarkable thermal and water vapour stability. JLU-Liu18 displays a rare occurrence of 9-connected, trinuclear [In3O(CO2)(6)N-3] secondary building units (SBUs) in a porous crystal, with high adsorption for small gases, especially CO2 (129 and 400 cm(3) g(-1) at 273 and 195 K, respectively, under 1 bar). It also performs with commendable selectivity for O-2 over N-2, and CO2, C2H6, C3H8 over CH4. JLU-Liu19 possesses outstanding performance for sieving small gases owing to its ultramicropores of 3.5 angstrom. Both of the two MOFs are promising materials for gas adsorption and purification.
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