Silica-Coated Nanocomposites of Magnetic Nanoparticles and Quantum Dots

Dong Kee Yi(Institute of Bioengineering and Nanotechnology), Subramanian Tamil Selvan(Institute of Bioengineering and Nanotechnology), Su Seong Lee(Institute of Bioengineering and Nanotechnology), Georgia C. Papaefthymiou(University of Maryland, College Park), Darshan C. Kundaliya(University of Maryland, College Park), Jackie Y. Ying(University of Maryland, College Park)
Journal of the American Chemical Society
March 15, 2005
Cited by 846

Abstract

Quantum dots (QDs) and magnetic nanoparticles (MPs) are of interest for biological imaging, drug targeting, and bioconjugation because of their unique optoelectronic and magnetic properties, respectively. To provide for water solubility and biocompatibility, QDs and MPs were encapsulated within a silica shell using a reverse microemulsion synthesis. The resulting SiO2/MP-QD nanocomposite particles present a unique combination of magnetic and optical properties. Their nonporous silica shell allows them to be surface modified for bioconjugation in various biomedical applications.


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