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.
Original language | English (US) |
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Pages (from-to) | 1368-1371 |
Number of pages | 4 |
Journal | Journal of Magnetism and Magnetic Materials |
Volume | 321 |
Issue number | 10 |
DOIs | |
State | Published - May 2009 |
Keywords
- Core-shell structure
- Lanthanide chelate
- Magnetite nanoparticle
- Multifunctional nanocomposite
- Silica
ASJC Scopus subject areas
- Condensed Matter Physics
- Electronic, Optical and Magnetic Materials