| 초록 |
Because the iron oxide nanoparticles (IONPs) have superparamagnetic properties, they can be applied in a broad spectrum of potential application such as magnetic storage device, sensor, catalysis and medical diagnosis and therapeutics. For practical applications, the solution processing in aqueous solution that makes more comfortable in handling is essential. However, it is difficult to fabricate stable IONPs in aqueous solution because of their strong hydrophobic surface. In this work, we have investigated water-soluble IONPs, where the surface of IONPs is non-covalently functionalized by the polymerization of surfactants. The non-covalent functionalized IONPs are highly stable in aqueous solution for long time (＞ 1 month) and their microstructure was kept even after harsh process such as freeze drying, which is confirmed by UV-vis spectrum and small angle X-ray scattering. |
