title: A novel approach for transferring oleic acid capped iron oxide nanoparticles to water phase.
abstract: A novel and simple method was described to transfer oleic acid stabilized iron oxide nanoparticles from organic solutions to water. The oxidation of OA by sodium periodate in mixed solvents formed a carboxyl group or vicinal diol to make the hydrophobic groups to hydrophilic groups on the surface of the nanoparticles. The characterization of nanoparticles indicated that the phase transfer based on the oxidation of OA was successful performed without change in the size and shape of the iron oxide nanoparticles. The hydrophilic groups on the iron oxide surface stabilized the nanoparticles in aqueous solution and the oxidized nanoparticles can be applied to bimolecular immobilization.
authors.affiliation: Key Laboratory of Synthetic and Natural Functional Molecular Chemistry (Ministry of Education), College of Chemistry and Material Science, Northwest University, Xi'an, 710069, PR China.
authors.forename: Miao
authors.initials: M
authors.lastname: Wang
authors.forename: Ming-Li
authors.initials: ML
authors.lastname: Peng
authors.forename: Wu
authors.initials: W
authors.lastname: Cheng
authors.forename: Ya-Li
authors.initials: YL
authors.lastname: Cui
authors.forename: Chao
authors.initials: C
authors.lastname: Chen
mesh_terms: D005290:Ferric Compounds / Q000737:chemistry*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D019301:Oleic Acid / Q000737:chemistry*; D010316:Particle Size; D044367:Phase Transition; D013499:Surface Properties; D014867:Water / Q000737:chemistry*
chemical_list: D005290:Ferric Compounds; D046911:Macromolecular Substances; D014867:Water; C000499:ferric oxide; D019301:Oleic Acid