The synthesis and characterization of polymer-coated FeAu multifunctional nanoparticles

Nanotechnology
Hong-Ling LiuJun-Hua Wu

Abstract

We report the one-pot nanoemulsion synthesis of FeAu magnetic-optical multifunctional nanoparticles coated by the biocompatible triblock copolymer, poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol) (PEO-PPO-PEO). The FTIR study confirms the PEO-PPO-PEO molecules on the surface of the resulting nanoparticles. The structural characterization identifies the crystallographic parameter 4.072 A of the cubic phase and the morphology analysis gives the nanoparticle shape, size and size distribution, showing the high crystallinity of the FeAu nanoparticles and an average particle size of approximately 6.5 nm. In addition there is direct confirmation of the alloying by elemental point probing of an individual nanoparticle. Following the visual demonstration of a rapid, efficient and reversible dispersion-collection process of the nanoparticles in solution, the magnetic measurement manifests a soft ferromagnetic behavior of the nanoparticles with a small coercivity of approximately 60 Oe at room temperature. The corresponding magnetic hysteresis curves were effectively assessed by modified bi-phase Langevin equations, which were satisfactorily explained in terms of a bimodal particle size distribution. The UV-...Continue Reading

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Citations

May 21, 2013·Nanoscale·Vincenzo AmendolaAlessandro Lascialfari
Dec 3, 2014·International Journal of Pharmaceutics·Zdenka BujňákováPeter Baláž
Mar 31, 2015·Physical Chemistry Chemical Physics : PCCP·Sampyo Hong, Talat S Rahman
Aug 23, 2011·Journal of Colloid and Interface Science·Qinghui ShouHuizhou Liu
Dec 24, 2010·Nanotechnology·HongLing LiuYoung Keun Kim

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