A new porous 2D copper(II) metal–organic framework for selective adsorption of CO2 over N2

• A porous 2D metal–organic framework is synthesized under solvothermal condition.
• The dicarboxylate ligand is asymmetric and prolonged by alkyne groups.
• The activated compound exhibits selective adsorption of CO2 over N2.

A new porous 2D metal–organic framework [Cu(L)DMF]·2H2O (1) has been synthesized by self-assembling copper paddle-wheel units with an asymmetrical dicarboxylate ligand prolonged by alkyne groups, 3,3′-(ethyne-1,2-diyl)dibenzoic acid (H2L) under solvothermal condition. The activated sample 1a displays selective adsorption of CO2 over N2 and shows low isosteric heat (Qst) of CO2 adsorption.

A new porous 2D metal–organic framework has been synthesized by self-assembling copper paddle-wheel units with an asymmetrical dicarboxylate ligand prolonged by alkyne groups under solvothermal condition. The activated compound exhibits selective adsorption of CO2 over N2.Figure optionsDownload as PowerPoint slide