incorporation of iron oxide nanoparticles and quantum dots into silica microspheres
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We describe the synthesis of magnetic and fluorescent silica microspheres fabricated by
incorporating maghemite (γ-Fe2O3) nanoparticles (MPs) and CdSe/CdZnS core/shell
quantum dots (QDs) into a silica shell around preformed silica microspheres. The resultant∼
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.
incorporating maghemite (γ-Fe2O3) nanoparticles (MPs) and CdSe/CdZnS core/shell
quantum dots (QDs) into a silica shell around preformed silica microspheres. The resultant∼
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.
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