Topology-guided synthesis and construction of amide-functionalized rare-earth metal-organic frameworks

Topology is playing an important role for the reticular chemistry of metal-organic frameworks (MOFs). We herein report two isostructural rare-earth amide-functionalized MOFs by virtue of topology-guided strategy and solvothermal reactions. Both MOFs display the desired (3,8,12)-c pek topological network and encompass dual cage-like and channel pore geometry replete with amide functionality. Low-pressure gas adsorption measurements show that both materials exhibit relatively high surface areas and pore volumes. Moreover, both materials selectively adsorb propylene over ethylene in a wide range of composition as revealed by high C3H6/C2H4 uptake rations and IAST selectivity.

Automated summary

Two isostructural rare-earth amide-functionalized MOFs with desired (3,8,12)-c pek topological network were successfully synthesized via a topology-guided strategy and solvothermal reactions, exhibiting high surface areas, pore volumes, and selective adsorption properties for propylene over ethylene in gas-phase separation applications.