Characterization of surface hydrophobicity of engineered nanoparticles

► Rose Bengal and naphthalene were used as hydrophobic probe molecules. ► Contact angle was measured on a thin film of nanoparticles prepared by filtering. ► Octanol-water affinity coefficients of nanoparticles were measured. ► Aqu-C60 was the most hydrophobic, followed by THF-C60, nano-Ag, nano-Au, fullerol.