Bifunctional gold-coated magnetic silica spheres

Verónica Salgueiriño-Maceira, Miguel A. Correa-Duarte, Michael Farle, Arturo López-Quintela, Karl Sieradzki, Rodolfo Diaz

Research output: Contribution to journalArticlepeer-review

150 Scopus citations

Abstract

A method for the development of bifunctional magnetic and optically tunable nanoparticles with a structural design involving a magnetic iron oxide core (Fe 3O 4/γ-Fe 2O 3) surrounded by a thick silica shell and further covered with an outer shell of gold is reported. These gold-coated magnetic silica spheres take advantage of the strong resonance absorption they show in the visible and near-infrared (NIR) range and can be controlled by using an external magnetic field, which makes them very promising in biomedical applications.

Original languageEnglish (US)
Pages (from-to)2701-2706
Number of pages6
JournalChemistry of Materials
Volume18
Issue number11
DOIs
StatePublished - May 30 2006

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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