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Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry and Materials Science, Northwest University, Xi'an 710069, P.R. China
Dalton Trans., 2013,42, 3653-3659
28 Aug 2012,
07 Dec 2012
First published online
08 Jan 2013
A Zn(II)–MOF [Zn2(tzba)(DMF)]·0.5DMF (1) (H2tzba = 4-(1H-tetrazol-5-yl) benzoic acid, DMF = N,N′-dimethylformamide) has been solvothermally synthesized and characterized. 1 is a three-dimensional (3D) microporous framework possessing an unusual multi-nodal (3,3,6)- or (4,4,4,4)-connected topological net. The small-sized pores, open metal sites, phenyl π systems and tetrazolyl groups of tzba2− decorating the pore with high polarity enable 1 to attract strongly for CO2, which leads to high sorption heat for CO2 and significant selectivities for CO2 over H2 and N2. In addition, 1 and desolvated 1′ display strong and weak blue luminescence in solid state, respectively, being mainly related to the framework vibration due to the residing and releasing of DMF molecules in the channel.
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