Change in synthetic strategy for MOF fabrication: from 2D non-porous to 3D porous architecture and its sorption and emission property studies

Abstract

A 3D cadmium metal organic framework, {[Cd(BDC)(BPz)]·2DMF·H₂O}_n (1) (BPz = 3,3′,5,5′-tetramethyl-4,4′-bipyrazole, BDC = benzene-1,3-dicarboxylic acid), has been synthesized using a solvent diffusion method. Compound 1 is a porous framework with the total solvent accessible void volume of 41.5% and exhibits a 6-c uninodal net with pcu topology. It shows selective CO₂ gas uptake (46.2 cc g⁻¹ at 195 K) over N₂ and CH₄ and selective water vapor uptake (130 cc g⁻¹) over methanol and ethanol solvent vapors at room temperature. Photoluminescence study of 1 dispersed in different solvents was also performed.