Shaping hybrid nanostructures with polymer matrices: the formation mechanism of silver–polypyrrole core/shell nanostructures

Abstract

The influence of experimental parameters in the formation of peculiar silver–polypyrrole core/shell nanostructures (Ag@PPy nanosnakes) has been studied in detail. Thus, the initial ratio of reactants and particle size, as well as the temperature, solvent and atmosphere used, all have a dramatic effect on the reaction outcome. From all these experiments and a careful investigation of the initial stages of reaction, the formation mechanism of such nanostructures has been proposed. The results presented show that the formation of a polypyrrole matrix around the initial Ag2O particles is key for the formation of Ag@PPy nanosnakes. Finally, the stability and time evolution of the hybrid nanosnakes are also reported.