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  • Title: Metal enhanced fluorescence solution-based sensing platform 2: fluorescent core-shell Ag@SiO2 nanoballs.
    Author: Aslan K, Wu M, Lakowicz JR, Geddes CD.
    Journal: J Fluoresc; 2007 Mar; 17(2):127-31. PubMed ID: 17279332.
    Abstract:
    In this Rapid Communication, we present the development of monodisperse core-shell (silver core-silica shell) nanoparticles with various shell thicknesses featuring a fluorophore, subsequently named Metal-Enhanced Fluorescence (MEF) nanoballs. MEF nanoballs consist of a approximately 130 nm silver nanoparticle core, a silica shell with up to 35 nm thickness and fluorophores doped within the silica shell. Fluorescent nanobubbles where the silver core is removed by chemical etching are used as control samples to show the benefits of using silver nanoparticles, i.e, Metal-Enhanced Fluorescence. Finally, we demonstrate the broad potential biological applications of MEF nanoballs by employing near-infra red emitting probes (Rhodamine 800) within the silica shell, for potential applications in cellular imaging and solution-based sensing.
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