Diazapyrenium-based porous cationic polymers for colorimetric amine sensing and capture from CO2 scrubbing conditions

Abstract

We have demonstrated that solution-state properties of a diazapyrenium dication, that is to form supramolecular adducts with aliphatic amines, can be transferred into the solid-state in the form of porous cationic polymers incorporating diazapyrenium units for visual detection and capture of aliphatic amines with uptake capacities up to 31 wt% for primary amines from CO₂ scrubbing systems.