One-Step Synthesis of PEGylated Gold Nanoparticles with Tunable Surface Charge
Figure 2
TEM characterization: TEM images at different magnification of AuNPs reduced with either PEG200 ((a) and (b)) or PEG4000 ((c) and (d)). The inset of (a) displays a single gold nanoparticle, a dimer and a trimer coated with a 5 nm PEG larger. The inset of (c) shows PEG4000-AuNPs self-assembled in a row. Spherical AuNPs coated with PEG200 and 4000 with similar narrow size distribution are visible.
