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  Magnetic-noble metal nanocomposites with morphology-dependent optical response

Pazos-Perez, N., Gao, Y., Hilgendorff, M., Irsen, S., Perez-Juste, J., Spasova, M., et al. (2007). Magnetic-noble metal nanocomposites with morphology-dependent optical response. Chemistry of Materials, 19(18), 4415-4422.

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Pazos-Perez-2007-Magnetic-noble metal.pdf (Any fulltext), 505KB
 
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Pazos-Perez, N., Author
Gao, Y., Author
Hilgendorff, M., Author
Irsen, S.1, Author              
Perez-Juste, J., Author
Spasova, M., Author
Farle, M., Author
Liz-Marzan, L. M., Author
Giersig, M., Author
Affiliations:
1Electron Microscopy and Analytics, Center of Advanced European Studies and Research (caesar), Max Planck Society, ou_2173680              

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Free keywords: DOT QUANTUM-WELL FEPT FUNCTIONALITIES GOLD NANORODS GROWTH HETERODIMERS MAGNETIC-PROPERTIES NANOCRYSTALS NANOPARTICLES ORGANOMETALLIC SYNTHESIS SIZE TIPS
 Abstract: This paper describes the synthesis of noble metal-magnetic nanoparticle composites with different shapes, using a seeded-growth approach in the presence of a cationic surfactant (cetyltrimethylammonium bromide, CTAB). Hydrophobic CoPt3 and FePt nanoparticles were transferred into water using CTAB as a phase-transfer agent and were subsequently used as seeding materials for the reduction of gold and silver precursors to produce Au-CoPt3, Ag-CoPt3, and Au-FePt nanocomposites. The nanocomposites synthesized were characterized by transmission electron microscopy (TEM), UV-visible spectroscopy, and SQUID magnetometry. Through the modification of the growth conditions, Au-CoPt3 nanocomposites with various morphologies (spheres, cubes, rods) were prepared, providing an opportunity to tailor the optical response of these composite nanoparticles while maintaining the magnetic properties of the original seeds, even upon phase transfer into water

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 Dates: 2007
 Publication Status: Published in print
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 Identifiers: ISI: ISI:000249021300009
ISSN: 0897-4756
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Title: Chemistry of Materials
  Alternative Title : Chem. Mater.
Source Genre: Journal
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Pages: - Volume / Issue: 19 (18) Sequence Number: - Start / End Page: 4415 - 4422 Identifier: -