Gate-opening upon CO2 adsorption on a metal-organic framework that mimics a natural stimuli-response system.

A dynamic metal-organic framework that consists of d-champhorate-based homochiral protuberant-grid-type networks can successively participate in gate-opening and closing processes for many cycles, which were triggered by the stimuli of the adsorption and desorption of CO2 to highly and specifically recognize CO2 over N2 and H2 with a high CO2 uptake of 90 mg g-1 under 35 bar at 298 K. It is highly thermally stable and the structure remains intact at least for ten reversible gate-opening and -closing processes. Thus, it is a potential candidate for industrial CO2 capture and facile release.