We studied the diffusion of charged gold nanoparticles within a semidilute solution of weakly charged polyelectrolyte, polyacrylic acid (PAA) of high molecular weight (Mw = 106 g mol−1) by using fluorescence correlation spectroscopy (FCS).
Fluorescence correlation spectroscopy allows the correlation of the state of aggregation in vitro with the intracellular fate of gold NPs for different antifouling coatings.