In-Situ Formation of Three-Dimensional Network Intrinsic Microporous Ladder Polymer Membranes with Ultra-High Gas Separation Performance and Anti-Trade-Off Effect

Abstract

A series of in situ crosslinked three-dimensional network intrinsic microporous ladder polymer membranes were synthesized by a facile copolymerization method. Their highly crosslinked structure led to enhanced microporosity with a large fraction of submicropores (<4 Å). They showed an anti-trade-off effect and superior H₂/CH₄, H₂/N₂, and O₂/N₂ separation performance with great potential in H₂ purification and O₂ enrichment applications.Polymers of intrinsic microporosity3D network membraneAnti-Trade-OffGas separationMolecular sieving