Lee, Yun Tack Woo, Kyoungja Choi, Kyu-Sil 2024-01-20T23:34:43Z 2024-01-20T23:34:43Z 2021-09-03 2008-03 1536-125X https://pubs.kist.re.kr/handle/201004/133705 Highly monodisperse superparamagnetic iron oxide nanoparticles (SPIONs, 7.5 nm gamma - Fe2O3) were synthesized by thermal decomposition of iron pentacarbonyl and consecutive aeration in organic medium. By treating with a small amount of iron pentacarbonyl, Fe-rich surface has been formed on SPION. Water-dispersible SPIONs (SPION-MPA) were prepared by Fe-S covalent conjugation between Fe-rich SPION and mercaptopropionic acid (MPA) and then, transformed to SPION - MPA - dextran composite by physical adsorption of biocompatible polymer dextran. The hydrodynamic diameter of SPION - MPA - dextran was in the range of 225 similar to 237 urn in water. MR contrast and spin-spin relaxation intensity of our SPION - MPA - dextran were similar to those of the commercial products, Ferridex and Resovist. English IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC MAGNETIC NANOCRYSTALS CONTRAST AGENTS NANOSCALE PARTICLES FE3O4 Preparation of water-dispersible and biocompatible iron oxide nanoparticles for MRI agent Article 10.1109/TNANO.2007.909949 1 IEEE TRANSACTIONS ON NANOTECHNOLOGY, v.7, no.2, pp.111 - 114 IEEE TRANSACTIONS ON NANOTECHNOLOGY 7 2 111 114 scie scopus 000254029500003 2-s2.0-41149089176 Engineering, Electrical & Electronic Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Engineering Science & Technology - Other Topics Materials Science Physics Article; Proceedings Paper MAGNETIC NANOCRYSTALS CONTRAST AGENTS NANOSCALE PARTICLES FE3O4 dextran MRI agent SPION surface modification