Methods for obtaining composites of polyaniline and reduced graphene oxide are disclosed. The methods include dispersing graphene oxide in an acid aqueous solution containing an anionic emulsifying agent to obtain a dispersion of the graphene oxide, dissolving an aniline oligomer in an organic solvent to obtain a solution of the oligomer, and mixing the solution of the oligomer with the dispersion of graphene oxide to obtain a composite of polyaniline and reduced graphene oxide. The methods may also include recovering a precipitate of the polyaniline/reduced graphene oxide composite, and dissolving the precipitate in an organic solvent to form a conductive ink or an ink for electronic devices.