Precise Synthesis of Star-Branched Polymers by Means of Living Anionic Polymerization Using 1,1-Bis(3-chloromethylphenyl)ethylene

摘要

The syntheses of three- and four-arm star-branched polymers by a new convenient methodology using 1,1-bis(3-chloromethylphenyl)ethylene are described. The methodology involves only two sets of reactions: an addition reaction of living anionic polymer to 1,1-bis(3-chloromethylphenyl)ethylene and a linking reaction of the intermediate polymer anion with ω-4-bromobutyl-functionalized polymer. All combinations of well-defined three- and four-arm stars comprised of polystyrene and polyisoprene segments were successfully synthesized by this methodology.