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

Abstract

A new dynamic porous coordination polymer (PCP) [Ni(dcpy)(bipy)_0.5(H₂O)]·1.5H₂O (1) was synthesized by assembly of 3-(2′,5′-dicarboxylphenyl)pyridine (dcpy), 4,4′-bipyridine (bipy) and NiSO₄via 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 (N₂, CH₄ and CO). The adsorption capacity for N₂ can be moderately altered by different activation temperatures demonstrating the framework flexibility of 1.