While societal reliance on plastics is continuously increasing, only a small proportion of synthetic polymers are produced sustainably and most rely on diminishing petrochemical feedstocks. Two possible solutions involve the use of renewable monomers and the design of more efficient catalyst systems. In our lab, we focus on both aspects and work towards development of novel polymerisation catalysts for renewable monomers such as carbon dioxide. Specifically, we take advantage of the ligand design, and the emerging concept of bimetallic and heterometallic cooperativity, to produce new catalysts and sustainable polymer materials.