Gold-coated iron nanoparticles: A novel magnetic resonance agent for T 1 and T2 weighted imaging

Sung Jin Cho, Benjamin R. Jarrett, Angelique Y. Louie, Susan M. Kauzlarich

Research output: Contribution to journalArticle

103 Citations (Scopus)

Abstract

Core/shell structured iron(Fe)/gold(Au) nanoparticles have been prepared by a reverse micelle method, and their potential application as magnetic resonance (MR) contrast agent investigated. The average nanoparticle size is 19 nm, as determined by x-ray powder diffraction (XRD) and transmission electron microscopy (TEM). Magnetic properties and relaxivities of nanoparticles are presented and compared. The saturation magnetization is 81 emu g-1 Fe for freshly prepared nanoparticles and the particles have high r 1(6.87 mM-1 s-1) when the Fe core is kept from oxidation. These nanoparticles may be used as T1 agents in the unoxidized form.

Original languageEnglish (US)
Pages (from-to)640-644
Number of pages5
JournalNanotechnology
Volume17
Issue number3
DOIs
StatePublished - Feb 14 2006

Fingerprint

Magnetic resonance
Gold
magnetic resonance
Iron
gold
Nanoparticles
Imaging techniques
iron
nanoparticles
Micelles
Saturation magnetization
Contrast Media
micelles
Magnetic properties
magnetic properties
Transmission electron microscopy
saturation
X rays
Oxidation
magnetization

ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Materials Science(all)
  • Physics and Astronomy (miscellaneous)

Cite this

Gold-coated iron nanoparticles : A novel magnetic resonance agent for T 1 and T2 weighted imaging. / Cho, Sung Jin; Jarrett, Benjamin R.; Louie, Angelique Y.; Kauzlarich, Susan M.

In: Nanotechnology, Vol. 17, No. 3, 14.02.2006, p. 640-644.

Research output: Contribution to journalArticle

Cho, Sung Jin ; Jarrett, Benjamin R. ; Louie, Angelique Y. ; Kauzlarich, Susan M. / Gold-coated iron nanoparticles : A novel magnetic resonance agent for T 1 and T2 weighted imaging. In: Nanotechnology. 2006 ; Vol. 17, No. 3. pp. 640-644.
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