Enhanced dispersion stability of gold nanoparticles by the physisorption of cyclic poly(ethylene glycol)

Abstract

Many nanoparticles are stabilised by chemical functionalisation with poly(ethylene glycol) (PEG). Here, the authors report on the functionalisation of gold nanoparticles by the physical absorption of cyclic PEG and demonstrate superior stabilisation against heating, freezing and lyophilisation.