文摘
A new methodology has been developed for preparing 伪-functional polymers in a one-pot simultaneous polymerization/isocyanate 鈥渃lick鈥?reaction. Our original synthetic strategy is based on the preparation of a carbonyl-azide chain transfer agent (CTA) precursor that undergoes the Curtius rearrangement in situ during reversible addition鈥揻ragmentation chain transfer (RAFT) polymerization yielding well-controlled 伪-isocyanate modified polymers. This strategy overcomes numerous difficulties associated with the synthesis of a polymerization mediator bearing an isocyanate at the R group and with the handling of such a reactive functionality. This new carbonyl-azide CTA can control the polymerization of a wide range of monomers, including (meth)acrylates, acrylamides, and styrenes (Mn = 2鈥?0 kDa; 膼 = 1.16鈥?.38). We also show that this carbonyl-azide CTA can be used as a universal platform for the synthesis of 伪-end-functionalized polymers in a one-pot RAFT polymerization/isocyanate 鈥渃lick鈥?procedure.