Synthesis of iron oxide nanoparticles with control over shape using imidazolium-based ionic liquids.
Ionic liquid (IL)-coated iron oxide nanoparticles (IONs) were synthesized by the thermal decomposition of Fe(CO)(5) in an IL/DMF solvent system in the absence of stabilizing surfactants at 90 degrees C for 1 h. The IL, [omim][BF(4)], could regulate the shape and allow the preparation of anisotropic IONs, such as barlike and wirelike nanoparticles. The barlike IONs prepared using this method showed good superparamagnetic behavior in a magnetic field and a MR contrast enhancement effect in a MR scanner.
Lee
Chang-Moon
CM
Department of Nuclear Medicine, Cyclotron Research Center, Research Institute of Clinical Medicine, Chonbuk National University Medical School, Jeonju, Jeonbuk 561-712, Korea.
Jeong
Hwan-Jeong
HJ
Lim
Seok Tae
ST
Sohn
Myung-Hee
MH
Kim
Dong Wook
DW