An amine functionalized rht-type metal-organic framework with the improved performance for gas uptake

•Dendritic hexacarboxylate linker containing amine and triazole groups•Amine functionalized rht-type copper(II) metal-organic framework•High CO2 and H2 uptake capacities and selectivity of CO2 over N2

A dendritic hexacarboxylate ligand featuring amine and triazole groups was rationally designed and synthesized, which was employed to construct a (3,24)-connected rht-type copper(II) metal-organic framework (MOF, NTU-105-NH2) under solvothermal conditions. The desolvated amine-functionalized MOF demonstrated improved CO2 and H2 uptake capacity as well as significant higher selectivity towards CO2 over N2 in comparison to its parent MOF.

Graphical abstractA triazole and amine dually functionalized MOF exhibited high CO2 and H2 uptake capacity as well as high selectivity towards CO2 over N2.Figure optionsDownload full-size imageDownload as PowerPoint slide