Electrochemistry of polyacetylene, (CH) x : electrochemical doping of (CH) x films to the metallic state

When silvery films of the semiconducting polymer, cis-‘polyacetylene,’(CH)x, are used as the anode in the electrolysis of aqueous KI solutions or methylene chloride solutions of [Bun4N]+[ClO4]–, films of (CHIy)x and [CH(ClO4)y]x, respectively, are obtained which, for the compositions [CHI0·07]x and [CH(ClO4)0·0645]x have high conductivities characteristic of the metallic state.