Incorporation of iron oxide nanoparticles and quantum dots into silica microspheres.
basic_science · Level V
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- Record sourced from PubMed, PMID 19206619.
- Also identified by DOI 10.1021/nn700344x.
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Abstract
We describe the synthesis of magnetic and fluorescent silica microspheres fabricated by incorporating maghemite (gamma-Fe2O3) nanoparticles (MPs) and CdSe/CdZnS core/shell quantum dots (QDs) into a silica shell around preformed silica microspheres. The resultant approximately 500 nm microspheres have a narrow size distribution and show uniform incorporation of QDs and MPs into the shell. We have demonstrated manipulation of these microspheres using an external magnetic field with real-time fluorescence microscopy imaging.
Medical subject headings
- Crystallization
- Ferric Compounds
- Magnetics
- Nanostructures
- Quantum Dots
- Silicon Dioxide