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Title: Synthesis and characterization of multifunctional silica core-shell nanocomposites with magnetic and fluorescent functionalities.

Authors: Ma, Zhiya; Dosev, Dosi; Nichkova, Mikaela; Dumas, Randy K; Gee, Shirley J; Hammock, Bruce D; Liu, Kai; Kennedy, Ian M

Published In J Magn Magn Mater, (2009 May 01)

Abstract: Multifunctional core-shell nanocomposites with a magnetic core and a silica shell doped with lanthanide chelate have been prepared by a simple method. First, citric acid-modified magnetite nanoparticles were synthesized by a chemical coprecipitation method. Then the magnetite nanoparticles were coated with silica shells doped with terbium (Tb(3+)) complex by a modified Stöber method based on hydrolyzing and condensation of tetraethyl orthosilicate (TEOS) and a silane precursor. These multifunctional nanocomposites are potentially useful in a variety of biological areas such as bio-imaging, bio-labeling and bioassays because they can be simultaneously manipulated with an external magnetic field and exhibit unique phosphorescence properties.

PubMed ID: 20336173 Exiting the NIEHS site

MeSH Terms: No MeSH terms associated with this publication

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