Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Synthesis and Magnetic Properties of Dendron Capped Fe2O3 Nanoparticles

  • George, Sheby M. (Department of Chemistry, College of Natural Sciences, Kongju National University) ;
  • Hong, In-Seok (Department of Chemistry, College of Natural Sciences, Kongju National University) ;
  • Kim, Jin-Kwon (Department of Chemistry, College of Natural Sciences, Kongju National University)
  • Published : 2008.08.20
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Abstract

Using a one-pot reaction technique, monodisperse $\gamma-Fe_2O_3$ nanoparticles were prepared by thermal decomposition of Fe$(CO)_5$ in the presence of a long alkyl chain terminated dendron surfactant. The size of the particles is controlled by adjusting the concentration of the dendron ligands in the reaction solution. Spherical, 2 nm sized nanoparticles were obtained with a 3:1 ratio of dendrons to Fe$(CO)_5$, while 4.6 nm sized particles were formed with a 1:3 ratio. Superparamagetic properties of 2 nm, 4 nm, and 4.6 nm sized particles were measured using a SQUID magnetometer.

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