Adapted from the work by Uchiyama et al. , DOT and the RAFT agent (varying ratios, mentioned in Table ) were dissolved in a suitable anhydrous solvent, sealed with septum, and degassed for 30 mins by bubbling nitrogen gas. Separately, a stock solution of the initiator was made in the same solvent followed by degassing the same way. Then it was added to the mixture of DOT and RAFT agent. The resultant mixture was stirred at RT. For kinetics measurements, same method was followed as above. SEC analysis was done after precipitating the polymer into excess ice-cold 1:1 hexane-diethyl ether.