Journal of Nanoparticle Research

, Volume 13, Issue 2, pp 499–510 | Cite as

Gold decorated NaYF4:Yb,Er/NaYF4/silica (core/shell/shell) upconversion nanoparticles for photothermal destruction of BE(2)-C neuroblastoma cells

  • Li Peng Qian
  • Li Han Zhou
  • Heng-Phon Too
  • Gan-Moog Chow
Research Paper

Abstract

Gold decorated NaYF4:Yb,Er/NaYF4/silica (core/shell/shell) upconversion (UC) nanoparticles (~70–80 nm) were synthesized using tetraethyl orthosilicate and chloroauric acid in a one-step reverse microemulsion method. Gold nanoparticles (~6 nm) were deposited on the surface of silica shell of these core/shell/shell nanoparticles. The total upconversion emission intensity (green, red, and blue) of the core/shell/shell nanoparticles decreased by ~31% after Au was deposited on the surface of silica shell. The upconverted green light was coupled with the surface plasmon of Au leading to rapid heat conversion. These UC/silica/Au nanoparticles were very efficient to destroy BE(2)-C cancer cells and showed strong potential in photothermal therapy.

Keywords

Upconversion Gold Photothermal therapy Nanocomposites Nanomedicine 

Notes

Acknowledgments

L. P. Qian is grateful to the research scholarships of the National University of Singapore. G. M. Chow acknowledges the Office of Naval Research, USA, for partial support of this work.

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Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  • Li Peng Qian
    • 1
  • Li Han Zhou
    • 2
    • 3
  • Heng-Phon Too
    • 2
    • 3
  • Gan-Moog Chow
    • 1
  1. 1.Department of Materials Science and EngineeringNational University of SingaporeSingaporeRepublic of Singapore
  2. 2.Department of BiochemistryNational University of SingaporeSingaporeRepublic of Singapore
  3. 3.Chemical Pharmaceutical EngineeringSingapore–Massachusetts Institute of Technology AllianceSingaporeRepublic of Singapore

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