Topology-Directed Cage Engineering in MOFs for Efficient C 2 H 2 /CO 2 /C 2 H 4 Separation

Cage-based porous materials, leveraging their unique “confined windows–expanded cavities” synergistic architecture, have demonstrated remarkable advantages in the field of gas adsorption and separation. This study presents a topology-directed in situ assembly strategy that successfully constructs metal–organic frameworks with tailored pore structures. Using the distinctive cage-channel soc topological frameworks as a template, by innovatively reversing the roles of traditional nodes and linkers, we employed the conformationally flexible hexa-pyridine ligands as six-connected nodes and utilized undercoordinated Cu2+ as five-connected linkers, in combination with halogen anions (F–, Cl–, and Br–) as…

• NN
  National Natural Science Foundation of China

  Award: 22171121
• NS
  Natural Science Foundation of Liaoning Province

  Award: 2023JH2/101300007