Pyridine-based conjugated microporous polymers as adsorbents for CO2 uptake via weak supramolecular interaction

Conjugated microporous polymers (CMPs) are a unique class of materials that combine pre-designable pi-conjugation with permanent micro-porosity. Here, two CMPs without pyridine units (CMP-1 and CMP-2) and pyridine-based CMPs (P-CMP-1 and P-CMP-2) were constructed via a pre-designable strategy. Interestingly, the P-CMPs anchored active pyridine groups in the backbone and possessed high micro-porosity. The P-CMPs exhibited high CO2 capture values via weak supramolecular interaction, which are much higher than those of CMPs without pyridine units.