Synthesis of Perfluorocyclobutyl Aryl Ether-Containing ABA Triblock Copolymer via Click Chemistry

Because of the unusual polymerization mechanism and normal high polymerization temperature of trifluorovinyl aryl ether monomers, it is difficult to synthesize perfluorocyclobutyl aryl ether (PFCB)-containing block copolymer via sequential addition of monomers.Here a coupling reaction via click chemistry to prepare PFCB-containing ABA triblock copolymer is reported.An azide-ended PFCB polymer, which was firstly prepared by end-modification of methyl-ended PFCB polymer, was coupled with alkynyl-ended polyethylene glycol via the azide alkyne Huisgen cycloaddition.Keywords block copolymer; end