Abstract

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.

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