Solution-Processable, Ladder-Branched Polyimides of Intrinsic Microporosity by [4+4] Cycloaddition for Membrane Gas Separation.

ABSTRACT: Advancements in membrane-based gas separation have the potential to address global challenges related to energy and the environment. However, new membrane materials must have excellent separation performance, stability, and processability, and simultaneously achieving all three metrics is extremely challenging. To circumvent these issues, a post-synthetic modification of polyimides of intrinsic microporosity (PIM-PIs) synthesized with a UV light (UV)-reactive anthracene co-monomer is reported. UV irradiation on the PIM-PI solution converts the anthracene units into dianthracene linkages by [4+4] cycloaddition, while the resultant PIM-PI is still solution-processable due to the branched structure. The ladder-like dianthracene moieties significantly increased both microporosity (<20 Å) and u

SUBMITTER: Lee TH 

PROVIDER: S-EPMC12810612 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature