Controllable Assembly of Hydrophobic Superparamagnetic Iron Oxide Nanoparticle with mPEG-PLA Copolymer and Its Effect on MR Transverse Relaxation Rate
Figure 1
(a) TEM image of hydrophobic superparamagnetic iron oxide nanoparticles. The size of the particles is about 6 nm. (b) 1H NMR spectrum of PEG (5 K)-PLA(2.5 K).
