High conductive copolymers of polypyrrole-α,ω-diamine polydimethylsiloxane

Block copolymers of α,ω-diamine polydimethylsiloxane (DA · PDMS) and polypyrrole have been produced by the polymerization of pyrrole with the redox system of ceric salt/DA · PDMS. The properties of the copolymers may be regulated by the ratio of DA · PDMS/Pyrrole/Ce₄(NH₄)₂(NO₃)₆. The copolymers with lower conductivities are soluble in solvents such as DMF and acetone but higher conductive copolymers are insoluble. A block copolymer with unusually high conductivity (4000 S/cm) was produced under one specific polymerization condition. The chemical structure and the surface morphology of the copolymer particles seem to be important for high conductivity.