CO2-induced gate-opening structural transition process of a porous coordination polymer revealed by solid-state 13C NMR.

This study investigates the gate-opening closed-to-open-pore structural transition of a porous coordination polymer induced by CO2 adsorption. Solid-state 13C NMR examination of adsorbed CO2 and framework dynamics reveals the surface adsorption state of the closed structure below the transition pressure and an intermediate structure during the transition process.