Dynamic porous coordination polymer based on 2D stacked layers exhibiting high sorption selectivity for CO2

A new dynamic porous coordination polymer (PCP) [Ni(dcpy)(bipy)(0.5)(H2O)]center dot 1.5H(2)O (1) was synthesized by assembly of 3-(2',5'-dicarboxylphenyl) pyridine (dcpy),4,4'-bipyridine (bipy) and NiSO4 via solvothermal, hydrothermal and microwave methods, displaying a wavelike 2D stacked layer framework. Gas adsorption studies for 1 shows a high selective adsorption of CO2 over other gases (N-2, CH4 and CO). The adsorption capacity for N-2 can be moderately altered by different activation temperatures demonstrating the framework flexibility of 1.