Inside an argon filled glovebox, the catalyst, the monomers and an internal mesitylene standard were added to a flame dried vial equipped with a flame dried stirrer bar and sealed with a melamine cap containing a Teflon inlay. The vial was brought outside the glovebox and placed in a pre-heated aluminium block at the specified temperature for the specified time. At the specified end point of the reaction, the polymerisation mixture was cooled down to room temperature and extracted with CDCl3 to determine the monomer conversion. The mixture was then added to 50 mL of MeOH and the polymer was isolated by centrifugation and dried in a vacuum oven set to 50 °C for 2 h. Alternatively the crude reaction mixture can also let cooled down to room temperature, causing the crystallisation of the polymer, which can then be isolated by centrifugation and air drying.