Fe3O4 nanoparticles; nominal diameter 20 nm (hydrodynamic diameter)

P20 molecule
Monomeric molecular weight: 1 kDa
Oligomeric state: Monomer
Total molecular weight: 1 kDa
Chemical formula:

Fe3O4 nanoparticles, coated with amphiphilic polymer coating composed of carboxylic acid atop an organic monomeric layer of oleic acid, dispersed in aqueous solution (purchased from Ocean Nano Inc., San Diego, CA, USA).