Highly conductive and thermally stable nanoparticle-conjugated polymer compounds
The water-based in situ chemical synthesis enables the successful polymerisation of conductive, conjugated polypyrrole: polystyrene sulfonate (PPY:PSS) polymer and the incorporation of silver (Ag) nanoparticles without morphological deformation.
The Ag nanoparticles dispersed within the PPY:PSS acted as a mass transport barrier, thus enhancing the thermal stability of the obtained Ag-PPY:PSS. In addition, the enhanced electrical conductivity of Ag-PPY:PSS was attributed to the embedded Ag nanoparticles generating a low-contact resistance conduction pathway, thereby facilitating inter-chain charge transport.
Tuned conductivity
Moreover, the conductivity of Ag-PPY:PSS was well tuned by controlling the weight percentage of Ag nanoparticles in the reaction mixture.
The environmentally-friendly synthesis of highly conductive and thermally stable nano-compounds is supposed to contribute to the realisation of next-generation green electronic applications.
The paper has been published in Progress in Organic Coatings, Volume 142, May 2020.