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Platinum dendritic nanoparticles with magnetic behavior
Australian Institute for Innovative Materials - Papers
  • Wenxian Li, University of Wollongong
  • Ziqi Sun, University of Wollongong
  • Dongliang Tian, University of Wollongong
  • Ivan P Nevirkovets, University of Wollongong
  • S X Dou, University of Wollongong
RIS ID
92202
Publication Date
1-1-2014
Publication Details

Li, W., Sun, Z., Tian, D., Nevirkovets, I. P. & Dou, S. (2014). Platinum dendritic nanoparticles with magnetic behavior. Journal of Applied Physics, 116 (3), 033911-1-033911-6.

Abstract
Magnetic nanoparticles have attracted increasing attention for biomedical applications in magnetic resonance imaging, high frequency magnetic field hyperthermia therapies, and magnetic-field-gradient-targeted drug delivery. In this study, three-dimensional (3D) platinum nanostructures with large surface area that features magnetic behavior have been demonstrated. The well-developed 3D nanodendrites consist of plentiful interconnected nano-arms ∼4 nm in size. The magnetic behavior of the 3D dendritic Pt nanoparticles is contributed by the localization of surface electrons due to strongly bonded oxygen/Pluronic F127 and the local magnetic moment induced by oxygen vacancies on the neighboring Pt and O atoms. The magnetization of the nanoparticles exhibits a mixed paramagnetic and ferromagnetic state, originating from the core and surface, respectively. The 3D nanodendrite structure is suitable for surface modification and high amounts of drug loading if the transition temperature was enhanced to room temperature properly.
Citation Information
Wenxian Li, Ziqi Sun, Dongliang Tian, Ivan P Nevirkovets, et al.. "Platinum dendritic nanoparticles with magnetic behavior" (2014)
Available at: http://works.bepress.com/sxdou/600/