fig1
Figure 1. The preparation of representative PFPIMs. (A) The post-synthetic modifications of PIM-1; (B) Synthesis route of PFPIMs through direct sulfonation; quaternization of TB polymers; hydroxyl and carboxylic acid group functionalization on PIM-based polyimide. PFPIMs: Polar groups-functionalized polymers of intrinsic microporosity; PIM: polymers of intrinsic microporosity; TB: Tröger’s-based.
