Gold/Iron Oxide Core/Hollow‐Shell Nanoparticles

Gold/Iron Oxide Core/Hollow‐Shell Nanoparticles

Gold/iron oxide core/hollow‐shell composite nanoparticles (NPs) with controllable shell thicknesses are synthesized (see figure). The gap between the Au core and iron oxide shell is formed as a result of different outward and inward diffusion rates of Fe and O, respectively. Control over interpartic...

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Veröffentlicht in:Advanced materials (Weinheim) 2008-11, Vol.20 (22), p.4323-4329
Hauptverfasser: Shevchenko, Elena V., Bodnarchuk, Maryna I., Kovalenko, Maksym V., Talapin, Dmitri V., Smith, Rachel K., Aloni, Shaul, Heiss, Wolfgang, Alivisatos, A. Paul
Format: Artikel
Sprache:eng
Schlagworte:
core/shell materials
hollow nanostructures
Kirkendall effect
semiconductor nanoparticles
surface plasmon resonance
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Zusammenfassung:Gold/iron oxide core/hollow‐shell composite nanoparticles (NPs) with controllable shell thicknesses are synthesized (see figure). The gap between the Au core and iron oxide shell is formed as a result of different outward and inward diffusion rates of Fe and O, respectively. Control over interparticle interactions allows encapsulation of several Au cores inside one iron oxide shell. Superparamagnetic measurements of the NPs at room temperature demonstrate the plasmon resonance at 565 nm.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.200702994