Incorporation of Iron Oxide Nanoparticles and Quantum Dots into Silica Microspheres
| Autor: | Numpon Insin, John P. Zimmer, Moungi G. Bawendi, Joseph B. Tracy, Hakho Lee, Robert M. Westervelt |
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| Rok vydání: | 2008 |
| Předmět: |
Materials science
Macromolecular Substances Surface Properties Molecular Conformation Shell (structure) General Physics and Astronomy Maghemite Nanoparticle Nanotechnology engineering.material Ferric Compounds Magnetics chemistry.chemical_compound Materials Testing Quantum Dots Fluorescence microscope General Materials Science Particle Size technology industry and agriculture General Engineering Silicon Dioxide equipment and supplies Fluorescence Microspheres Nanostructures chemistry Quantum dot engineering Crystallization Iron oxide nanoparticles Superparamagnetism |
| Zdroj: | ACS Nano. 2:197-202 |
| ISSN: | 1936-086X 1936-0851 |
| DOI: | 10.1021/nn700344x |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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