Magnetic Monodisperse Fe3O4 Nanoparticles

A facile chemical approach to producing monodisperse Fe3O4 nanoparticles is developed in the presence of oleic acid and laurylamine solution. These particles capped with organic ligands could be readily dispersed in nonpolar hexane. Transmission electron microscopy observations indicated that the as-synthesized nanoparticles were single crystals. The solvethermal temperature and consequent aging time are demonstrated to be critical for size distribution.

[1]  A. P. Alivisatos,et al.  A new nonhydrolytic single-precursor approach to surfactant-capped nanocrystals of transition metal oxides , 1999 .

[2]  P. Searson,et al.  The Growth Kinetics of TiO2 Nanoparticles from Titanium(IV) Alkoxide at High Water/Titanium Ratio , 2003 .

[3]  Berkowitz,et al.  Surface Spin Disorder in NiFe2O4 Nanoparticles. , 1996, Physical review letters.

[4]  R. Lerner,et al.  Activation Volumes for Solid-Solid Transformations in Nanocrystals , 2001, Science.

[5]  M. Yin,et al.  Synthesis of monodisperse nanocrystals of manganese oxides. , 2003, Journal of the American Chemical Society.

[6]  K. Suslick,et al.  Sonochemical Synthesis of Iron Colloids , 1996 .

[7]  K. Raj,et al.  Commercial applications of ferrofluids , 1990 .

[8]  Y. Qian,et al.  Hydrothermal Synthesis of Ultrafine α-Fe2O3 and Fe3O4 Powders , 1998 .

[9]  P. Wust,et al.  Magnetic fluid hyperthermia (MFH): Cancer treatment with AC magnetic field induced excitation of biocompatible superparamagnetic nanoparticles , 1999 .

[10]  Mamoun Muhammed,et al.  Characterization and MRI study of surfactant-coated superparamagnetic nanoparticles administered into the rat brain , 2001 .

[11]  Taeghwan Hyeon,et al.  Synthesis of highly crystalline and monodisperse maghemite nanocrystallites without a size-selection process. , 2001, Journal of the American Chemical Society.

[12]  A. Samia,et al.  Superparamagnetic Relaxation and Magnetic Anisotropy Energy Distribution in CoFe2O4 Spinel Ferrite Nanocrystallites , 1999 .

[13]  I. Lifshitz,et al.  The kinetics of precipitation from supersaturated solid solutions , 1961 .

[14]  V. Dravid,et al.  Self-assembled (SA) bilayer molecular coating on magnetic nanoparticles , 2001 .

[15]  R. S. Sapieszko.  Preparation of well-defined colloidal particles by thermal decomposition of metal chelates. I. Iron oxides*1 , 1980 .

[16]  Gil Markovich,et al.  Ordered Two‐Dimensional Arrays of Ferrite Nanoparticles , 2001 .

[17]  A. Gedanken,et al.  Sonochemical synthesis and characterization of pure nanometer-sized Fe3O4 particles , 2000 .

[18]  Hao Zeng,et al.  Size-controlled synthesis of magnetite nanoparticles. , 2002, Journal of the American Chemical Society.

[19]  Sun,et al.  Monodisperse FePt nanoparticles and ferromagnetic FePt nanocrystal superlattices , 2000, Science.