Alternating CO₂ and bicycloalkane copolymerization to circular polyesters

Nature, Published online: 29 July 2026; doi:10.1038/s41586-026-10848-2A simple organic catalyst enables direct alternating copolymerization of CO2 with bicycloalkanes to produce high-performance polyesters that can be selectively depolymerized and recycled in a closed-loop lifecycle.