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Polymer–Metal–Organic Frameworks (polyMOFs) as Water Tolerant Materials for Selective Carbon Dioxide Separations
- Zhang, Zhenjie, Nguyen, Ha Thi
Hoang, Miller, Stephen A., Ploskonka, Ann M., DeCoste, Jared B., Cohen, Seth M.
- Journal of the American Chemical Society 2016 v.138 no.3 pp. 920-925
- carbon dioxide, crosslinking, hydrophobicity, ligands, nitrogen, polymers, sorption
- 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.