Location matters: cooperativity of catalytic partners in porous organic polymers for enhanced CO2 transformation.

Herein, we show that by following molecular engineering of the inter-site distance between the two functionalities in porous organic materials, it is possible to enable them to work in a concerted manner. Specifically, the activity can be amplified by the placement of the hydroxyl group in the meta position of the phosphonium salts in the representative cycloaddition of epoxides and CO2.