An improved graft polymerization method from general graphitic structures with organic based monomers through the mechanism of Reversible Addition-Fragmentation Chain Transfer (RAFT) polymerization was developed. Organic hybrid nanomaterials comprising graphitic structures are covalently bonded via chemically reactive groups on the outer walls of the structure. Methods for forming the covalently bonded structures to many organic based monomers and/or polymers may occur through RAFT polymerization utilizing dithioester as a chain transfer agent. The method may also comprise nanocomposite formation of such organic hybrid nanomaterials with common plastic(s) to form graphitic nanocomposite reinforced plastic articles.