Fig. 1

Fabrication of peptide-coated GNPs and their physicochemical characterization. a A schematic diagram of the synthesis of the peptide-coated GNP P12. b TEM images of bare GNPs and P12. c Size distribution of GNPs before and after peptide modification. d The change of hydrodynamic sizes of P12 as a function of incubation time after mixing the peptides with GNPs. e Stability of P12 formulated after various incubation time in different concentrations (150 to 750 mM) of NaCl solution. N = 3