Polymer–Metal–Organic Frameworks (polyMOFs) as Water Tolerant Materials for Selective Carbon Dioxide Separations

Recently,
polymer–metal–organic frameworks (polyMOFs)
were reported as a new class of hybrid porous materials that combine
advantages of both organic polymers and crystalline MOFs. Herein,
we report a bridging coligand strategy to prepare new types of polyMOFs,
demonstrating that polyMOFs are compatible with additional MOF architectures
besides that of the earlier reported IRMOF-1 type polyMOF. Gas sorption
studies revealed that these polyMOF materials exhibited relatively
high CO2 sorption but very low N2 sorption,
making them promising materials for CO2/N2 separations.
Moreover, these polyMOFs demonstrated exceptional water stability
attributed to the hydrophobicity of polymer ligands as well as the
cross-linking of the polymer chains within the MOF.