Mussel-Inspired Polydopamine Coated Iron Oxide Nanoparticles for Biomedical Application

Figure 8

TEM images of Fe₃O₄ NPs with 11, 17, and 23 nm core size before (a) and after (b) ligand exchange with OligoPEG-Dopa. Schematic representation of the NP with the corresponding surface cap along with images of the organic and aqueous dispersions are shown [24].