Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1802461 | Journal of Magnetism and Magnetic Materials | 2009 | 4 Pages |
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 (Tb3+) 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.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Zhiya Ma, Dosi Dosev, Mikaela Nichkova, Randy K. Dumas, Shirley J. Gee, Bruce D. Hammock, Kai Liu, Ian M. Kennedy,