title: Synthesis and bio-functionalization of multifunctional magnetic Fe(3)O(4)@Y(2)O(3):Eu nanocomposites.
abstract: A facile homogenous precipitation method has been developed for the synthesis of multifunctional, magnetic, luminescent nanocomposites with Fe(3)O(4) nanoparticles as the core and europium-doped yttrium oxide (Y(2)O(3):Eu) as the shell. The nanocomposites showed both super-paramagnetic behavior and unique europium fluorescence properties with high emission intensity. Their surface has been modified with a bifunctional ligand, p-aminobenzoic acid (PABA), and further biofunctionalized with biotin; the nanocomposites showed specific targeting for avidin-coupled polystyrene beads.
authors.affiliation: Department of Mechanical and Aeronautical Engineering, University of California Davis, One Shields Avenue, Davis, CA, 95616, USA.
authors.forename: Zhi Ya
authors.initials: ZY
authors.lastname: Ma
authors.forename: Dosi
authors.initials: D
authors.lastname: Dosev
authors.forename: Mikaela
authors.initials: M
authors.lastname: Nichkova
authors.forename: Shirley J
authors.initials: SJ
authors.lastname: Gee
authors.forename: Bruce D
authors.initials: BD
authors.lastname: Hammock
authors.forename: Ian M
authors.initials: IM
authors.lastname: Kennedy