期刊
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
卷 311, 期 1, 页码 59-62出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2006.10.1150
关键词
Pluronic F127; phase transfer; iron oxide; nanoparticle; magnetite; FTIR; DSC; DLS
Iron oxide nanoparticles made from the thermal decomposition method are highly uniform in all respects (size, shape, composition and crystallography), making them ideal candidates for many bioapplications. The surfactant coating on the as-synthesized nanoparticles renders the nanoparticles insoluble in aqueous solutions. For biological applications nanoparticles must be water soluble. Here we demonstrate the phase transfer of our nanoparticles with the biocompatible copolymer Pluronic F127. Transmission electron microscopy, Fourier transform infrared spectroscopy and dynamic light scattering indicate that the nanoparticles are coated discretely. Magnetic measurements show that the nanoparticles remain superparamagnetic with saturation magnetization similar to 96% of the maximum theoretical value. (C) 2006 Published by Elsevier B.V.
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