Nanoparticle brushes: Complex nanostructures can be formed by self assembly of amphiphilic CdSe/CdS coreshell nanoparticles that bear a brushlike layer of poly (ethylene oxide) chains. This route is based on controlling the volume fractions of hydrophilic and hydrophobic moieties within the particles and allows the formation of micellar, cylindrical, or vesicular nanoobjects (see picture).