Electroactive Polymer Based Conducting, Magnetic, and Luminescent Triple Composites

Abstract

The latest our results on triple polymer composites based on graphene nanoplatelets (GNP) covered by copper nanoparticles, iron oxide nanoparticles, and CdSe two-dimensional and spherical nanoparticles are presented and analyzed. It was found that GNP covered by copper nanoparticles results in higher conductivity and film stability increase in PEDOT:PSS than pure GNP. It was revealed that in magnetic field, composites based on GNP with iron oxide nanoparticles have metallic conductivity and form thin films with higher surface while thin films formed without magnetic field are dielectrics and have less surface. Luminescent composite based on CdSe nanoplatelets has been obtained. Two maxima in the luminescence spectra of CdSe nanoplatelets have been found and explained with a model based on efficient absorption of photons between neighbor nanoplatelets. Luminescence of active particles was different in different places of the sample and strongly depends on the graphene type. Stronger luminescence is observed in graphene with less amount of defects.