Fabrication of silica-coated magnetic nanoparticles with highly photoluminescent lanthanide probes.

Div. of Metrology for Quality Life, Korea Research Institute of Standards and Science, Yuseong P. O. Box 102, Daejeon, 305-600, Korea.
Chemical Communications (Impact Factor: 6.38). 05/2007; DOI: 10.1039/b617608a
Source: PubMed

ABSTRACT Bi-functional nanoparticles (NPs) that consist of silica-coated magnetic cores and luminescent lanthanide (Ln) ions anchored on the silica surface via organic linker molecules are reported. Compared to individual Ln ions, the hybrid NPs show a drastically enhanced photoluminescence due to the efficient ligand-to-metal energy transfer in the Ln-loaded NPs: the new bi-functional NPs could be used in a variety of biological applications involving magnetic separation and optical detection.

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