@article{2959202, title = "Gold-decorated graphene nanosheets composed of a biocompatible non-charged water-soluble polypeptide", author = "Manos Gkikas and Georgios V. Theodosopoulos and Biswa P. Das and Marina Tsianou and Hermis Iatrou and Georgios Sakellariou", journal = "European Polymer Journal", year = "2014", volume = "60", pages = "106--113", publisher = "ELSEVIER BV", issn = "0014-3057", doi = "10.1016/j.eurpolymj.2014.08.022", keywords = "Gold Nanoparticles; Graphene nanosheets; Graphene oxides; L-proline", abstract = "Nanocomposite materials derived from carbon/polymer hybrids and metallic nanoparticles are of great interest due to the wide spectrum of potential applications. In this work, the biocompatible, non-charged and independent of pH, water soluble polypeptide, poly(L-proline) (PLP), was covalently grafted on exfoliated graphene oxide (GO) by a 'grafting to' approach, through the ring opening reaction of the surface epoxide species, enabling thus the simultaneous reduction and stabilization of as-synthesized gold nanoparticles in water in one-step, without any toxic by-product formation. The PLP-mediated GO nanocomposites serve as a new scaffold for metallic particles supported on a carbon matrix through the polypeptide mediation, and could give rise to multiple applications, in catalysis and cancer therapies. © 2014 Elsevier Ltd. All rights reserved." }