Multiple polarizations and nanostructure of double-stranded conjugated block copolymer for enhancing dielectric performance

摘要

The double-stranded conjugated triblock copolymers are synthesized by tandem metathesis cyclopolymerization and ring-opening metathesis polymerization. They display high permittivity of 28-26, low dielectric loss of 0.06-0.02, and good stored/released energy density of 2.96-2.89/2.58-2.75 J cm(-3) at 245 MV m(-1) accompanied with the excellent charge-discharge efficiency of 87.2-95.2% when the copolymers self-assemble into a core-shell nanostructure, which are better than those of both homopolymer and copolymers without nanostructure. (C) 2017 Elsevier B.V. All rights reserved.