Synthesis of Block Copolymers and Asymmetric Star-Branched Polymers Comprised of Polyacetylene and Polystyrene Segments via Ionic Bond Formation

摘要

Novel ion-bonded AB diblock copolymers and three-arm AB_2 asymmetric star-branched polymers comprised of polyacetylene(A)and polystyrene(B)segments have been synthesized by the stoichiometric reaction of tert-amine-chain-end-functionalized poly(phenyl vinyl sulfoxide)s with either chain-end-or in-chain-carboxylated polystyrenes to link the two polymer segments via ionic bond,followed by thermal treatment to convert their poly(phenyl vinyl sulfoxide)s to polyacetylene segments.Periodic lamellar morphologies were observed in the cast films of such polymers by TEM measurement.The isolation of the nano-size sheet consisting of polyacetylene lamellar layers was attempted.