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Dumbbell-like bifunctional Au-Fe3O4 nanoparticles.

TitleDumbbell-like bifunctional Au-Fe3O4 nanoparticles.
Publication TypeJournal Article
Year of Publication2005
AuthorsYu H, Chen M, Rice PM, Wang SX, White RL, Sun S
JournalNano Lett
Volume5
Issue2
Pagination379-82
Date Published2005 Feb
ISSN1530-6984
KeywordsAdsorption, Crystallization, Ferric Compounds, Gold, Magnetics, Materials Testing, Molecular Conformation, Nanostructures, Nanotechnology, Particle Size
Abstract

Dumbbell-like Au-Fe(3)O(4) nanoparticles are synthesized using decomposition of Fe(CO)(5) on the surface of the Au nanoparticles followed by oxidation in 1-octadecene solvent. The size of the particles is tuned from 2 to 8 nm for Au and 4 nm to 20 nm for Fe(3)O(4). The particles show the characteristic surface plasmon absorption of Au and the magnetic properties of Fe(3)O(4) that are affected by the interactions between Au and Fe(3)O(4). The dumbbell is formed through epitaxial growth of iron oxide on the Au seeds, and the growth can be affected by the polarity of the solvent, as the use of diphenyl ether results in flower-like Au-Fe(3)O(4) nanoparticles.

DOI10.1021/nl047955q
Alternate JournalNano Lett.
PubMed ID15794629