Sized Iron Oxide Nanoparticles Research Articles

ChemInform Abstract: Designed Synthesis of Uniformly Sized Iron Oxide Nanoparticles for Efficient Magnetic Resonance Imaging Contrast Agents

AbstractReview: 63 refs.

Designed synthesis of uniformly sized iron oxide nanoparticles for efficient magnetic resonance imaging contrast agents

Various magnetic nanoparticles have been extensively investigated as novel magnetic resonance imaging (MRI) contrast agents owing to their unique characteristics, including efficient contrast effects, biocompatibility, and versatile surface functionalization capability. Nanoparticles with high relaxivity are very desirable because they would increase the accuracy of MRI. Recent progress in nanotechnology enables fine control of the size, crystal structure, and surface properties of iron oxide nanoparticles. In this tutorial review, we discuss how MRI contrast effects can be improved by controlling the size, composition, doping, assembly, and surface properties of iron-oxide-based nanoparticles.

Fabrication and magnetic properties of boron nitride nanocapsules encaging iron oxide nanoparticles

Abstract Boron nitride (BN) nanocapsules with iron oxide nanoparticles were fabricated by an arc discharge method, and the magnetic properties of these nanocapsules were investigated. High resolution electron microscopy showed that iron oxide nanoparticles of size 20 nm were encapsulated by boron nitride sheets of width 4 nm. Magnetization of the BN nanocapsules showed paramagnetism and the initial iron oxides showed ferromagnetism, which suggests the transformation into superparamagnetism by separating the iron oxide nanoparticles with BN sheets. The present work showed that the BN nanocapsules with magnetic nanoparticles can be produced and the effectiveness of the arc melting method was confirmed.