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Facile approach to modification of Fe3O4/Au assembled composite nanoparticles

FENG SHI1,2, WENLI HUI1

Affiliation

  1. College of Life Sciences, Northwest University. Xi’an 710069, China
  2. College of Life Sciences, Shihezi University. Xin Jiang Shihezi 832003, China

Abstract

Fe3O4/Au composite nanoparticles have proved to be promising in a wide range of biomedical applications. In order to get monodispersed nanoparticles, Fe3O4/Au composite nanoparticles modified with α-thio poly (ethylene glycol) were prepared and the composite nanoparticles could be suspended in PBS buffer several months. The modified magnetic composite nanoparticles not only possessed optical properties based on Surface Plasmon Resonance (SPR), but also exhibited a significant stabilization against aggregation in different buffer. Coupled with biomolecules, the Fe3O4/Au composite nanoparticles may accommodate biosensor for simultaneous magnetic and optical detection in the near future..

Keywords

Fe3O4/Au nanopaticle, Modification, Magnetic, Nanostructure.

Submitted at: Jan. 6, 2011
Accepted at: Feb. 17, 2011

Citation

FENG SHI, WENLI HUI, Facile approach to modification of Fe3O4/Au assembled composite nanoparticles, Journal of Optoelectronics and Advanced Materials Vol. 13, Iss. 2, pp. 141-145 (2011)