Comparative Study of the Magnetic Behavior of Spherical and Cubic Superparamagnetic Iron Oxide Nanoparticles

被引：114

作者：

Zhen, Guoliang ^{[1
]}

Muir, Benjamin W. ^{[1
]}

Moffat, Bradford A. ^{[2
]}

Harbour, Peter ^{[1
]}

Murray, Keith S. ^{[4
]}

Moubaraki, Boujemaa ^{[4
]}

Suzuki, Kiyonori ^{[5
]}

Madsen, Ian ^{[6
]}

Agron-Olshina, Nicki ^{[6
]}

Waddington, Lynne ^{[1
]}

Mulvaney, Paul ^{[3
]}

Hartley, Patrick G. ^{[1
]}

机构：

[1] CSIRO Mol & Hlth Technol, Clayton, Vic 3168, Australia

[2] Univ Melbourne, Dept Radiol, Parkville, Vic 3052, Australia

[3] Univ Melbourne, Sch Chem & Bio21 Inst, Parkville, Vic 3052, Australia

[4] Monash Univ, Sch Chem, Clayton, Vic 3800, Australia

[5] Monash Univ, Dept Mat Engn, Clayton, Vic 3800, Australia

[6] CSIRO Minerals, Clayton, Vic 3168, Australia

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2011年 / 115卷 / 02期

关键词：

MR CONTRAST AGENTS; BIOMEDICAL APPLICATIONS; THERMAL-DECOMPOSITION; NANOCRYSTAL SYNTHESIS; ATOMISTIC SIMULATION; SHAPE CONTROL; SURFACE; SIZE; SPINEL; FUNCTIONALIZATION;

D O I：

10.1021/jp104953z

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A modified method for the production of cubic and spherical superparamagnetic nanoparticles is presented. Cubic nanoparticles can be made that are highly monodisperse down to a diameter of 8 nm. A detailed study is presented of the physical properties of these nanoparticles using high-resolution transmission electron microscopy analysis, X-ray powder diffraction, superconducting quantum interference device measurements, and relaxivity measurements performed in a magnetic resonance imaging scanner. It is found that cubic iron oxide nanoparticles have a higher degree of crystallinity and relaxivity (four times higher) than their spherical counterparts. These novel cubic iron oxide nanoparticles show great promise for use in biomedical imaging applications.

引用

页码：327 / 334

页数：8

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