Electroactive Polymers Prepared By Vapour Phase Polymerisation
Through the use of variations to the VPP process, a range of electroactive thin films are prepared. These cover complex multilayer structure, copolymerization of different conductive monomers, and spatial patterning. Performance data on the switching of electrochromic devices based upon these polymer films show stability upwards of 10,000 switches. Further enhancement of the electroactive polymers is achieved by incorporating within various 2D materials such as graphene . In this extension, graphene- or MoS2-PEDOT-tosylate nanocomposite films, ca. 170 nm thick, have been prepared by dispersing sterically stabilised nanosheets throughout an oxidant solution containing a triblock copolymer, with the liquid-like properties of the oxidant film under typical VPP conditions transporting the 2D nanomaterials into the forming PEDOT-tosylate film. The resulting composite film of graphene-PEDOT-tosylate has a 65% larger in-plane modulus when compared to the polymer only film, and can be used to facilitate the oxygen reduction reaction, with efficiencies equivalent to or greater than that of Pt .
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