Combinational Synthetic Approaches for Isoreticular and Polymorphic Metal–Organic Frameworks with Tuned Pore Geometries and Surface Properties

Isoreticular and polymorphic 3-D MOFs were prepared via the combination of direct solvothermal reactions, postsynthetic ligand exchanges of the MOFs prepared via the direct solvothermal reactions, and postsynthetic ligand insertions into a 2-D MOF. The appropriate pore dimensions, surface areas, and adsorption enthalpies of the MOFs combined well to produce the largest working CO2 capture capacities via the pressure swing adsorption process.