Block Copolymer Synthesis via a Combination of ATRP and RAFT Using Click Chemistry

AbstractBlock copolymer synthesis via a combination of ATRP and RAFT using click chemistry is reported for the first time. A RAFT agent with a terminal propargyl group (PTTC) was synthesized and was used to polymerize butyl acrylate and gave quantitative monomer conversion. Azide‐terminated p(tbA) was obtained by ATRP followed by reaction with sodium azide. Later, using CuBr‐PMDETA as catalyst via click chemistry, p(tBA)(ATRP) and p(BA)(RAFT) were reacted to get a block copolymer of p(tBA)(ATRP)‐b‐p(BA)(RAFT). Further, a total of 24 block copolymers were made by reacting four azido functional polymers with six propargyl functional polymers to obtain block copolymers via click chemistry. magnified image