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Platinum dendritic nanoparticles with magnetic behavior

Journal Article


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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.

Authors


  •   Li, W (external author)
  •   Sun, Ziqi
  •   Tian, Dongliang (external author)
  •   Nevirkovets, Ivan (external author)
  •   Dou, Shi Xue

Publication Date


  • 2014

Citation


  • 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.

Scopus Eid


  • 2-s2.0-84904700378

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2174&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1173

Start Page


  • 033911-1

End Page


  • 033911-6

Volume


  • 116

Issue


  • 3

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.

Authors


  •   Li, W (external author)
  •   Sun, Ziqi
  •   Tian, Dongliang (external author)
  •   Nevirkovets, Ivan (external author)
  •   Dou, Shi Xue

Publication Date


  • 2014

Citation


  • 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.

Scopus Eid


  • 2-s2.0-84904700378

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2174&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1173

Start Page


  • 033911-1

End Page


  • 033911-6

Volume


  • 116

Issue


  • 3