%0 Journal Article
	%A S. S. Pati and  L. Herojit Singh and  A. C. Oliveira and  V. K. Garg
	%D 2015
	%J International Journal of Pharmacological and Pharmaceutical Sciences
	%B World Academy of Science, Engineering and Technology
	%I Open Science Index 102, 2015
	%T Chitosan Functionalized Fe3O4@Au Core-Shell Nanomaterials for Targeted Drug Delivery
	%U https://publications.waset.org/pdf/10001554
	%V 102
	%X Chitosan functionalized Fe3O4-Au core shell
nanoparticles have been prepared using a two-step wet chemical
approach using NaBH4 as reducing agent for formation of Au in
ethylene glycol. X-ray diffraction studies shows individual phases of
Fe3O4 and Au in the as prepared samples with crystallite size of 5.9
and 11.4 nm respectively. The functionalization of the core-shell
nanostructure with Chitosan has been confirmed using Fourier
transform infrared spectroscopy along with signatures of octahedral
and tetrahedral sites of Fe3O4 below 600cm-1. Mössbauer
spectroscopy shows decrease in particle-particle interaction in
presence of Au shell (72% sextet) than pure oleic coated Fe3O4
nanoparticles (88% sextet) at room temperature. At 80K, oleic acid
coated Fe3O4 shows only sextets whereas the Chitosan functionalized
Fe3O4 and Chitosan functionalized Fe3O4@Au core shell show
presence of 5 and 11% doublet, respectively.
	%P 670 - 673