| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Kuzhir, Pavel
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2023Effect of external magnetic fields on the contact angle of magneto-responsive fluids
- 2020Discontinuous shear thickening in concentrated mixtures of isotropic-shaped and rod-like particles tested through mixer type rheometrycitations
- 2018Synthesis and functionalization of rod-like iron oxide nanoparticles
- 2018Synthesis and functionalization of rod-like iron oxide nanoparticles
- 2018Colloidal Stability of Aqueous Suspensions of Polymer-Coated Iron Oxide Nanorods: Implications for Biomedical Applicationscitations
- 2018Rheology of magnetic alginate hydrogelscitations
- 2016Biocompatible magnetic core–shell nanocomposites for engineered magnetic tissuescitations
- 2016Biocompatible magnetic core–shell nanocomposites for engineered magnetic tissuescitations
- 2015Functionalized microfibers for field-responsive materials and biological applicationscitations
- 2014How nonmagnetic particles intensify rotational diffusion in magnetorheological fluidscitations
- 2014Magnetorheological effect in the magnetic field oriented along the vorticitycitations
- 2013Steady state rheological behaviour of multi-component magnetic suspensionscitations
- 2011Non-linear viscoelastic response of magnetic fiber suspensions in oscillatory shearcitations
- 2010Synthesis and magnetorheology of suspensions of submicronsized cobalt particles with tunable particle size
- 2009Synthesis and magnetorheology of suspensions of cobalt particles with tunable particle sizecitations
Places of action
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document
Synthesis and functionalization of rod-like iron oxide nanoparticles
Abstract
Magnetic iron oxide nanoparticles have been recognized for use in various promising biomedical applications, such as detection of biological molecules, contrast agents in magnetic resonance imaging (MRI), vectors in drug delivery and mediators to convert electromagnetic energy to heat (hyperthermia). We reproduce a simple two-step reaction strategy for the synthesis of uniform magnetic iron oxide nanorods with ~50 nm in length and ~5 nm in diameter (Figure 1) and their colloidal stabilization with three different polymers (bisphosphonate polyoxyethylene-Optima 100, polymethacrylate polyoxyethylene-PCP45 and polyacrylic acid sodium salt-PAA) in water. Two-step reaction consists on synthesis of akaganeite followed by its transformation by reduction using hydrazine in microwave to obtain magnetic iron oxide nanorods [1]. The nanorods present the saturation magnetization value of 64 kA/m and residual magnetization of 15 kA/m, thus this material has ferro-or ferrimagnetic behavior. To estimate the iron oxide composition we use the technique of Mössbauer spectroscopy and a mixture of maghemite (strongly magnetic phase) with a quasi-amorphous intermediate phase (weakly magnetic phase) was detected, explaining a relatively low magnetization saturation. The suspensions of MNPs were probed by dynamic light scattering (DLS) and the distribution curve provides the Z-average hydrodynamic diameter equal 70±5 nm for Optima 100, 82±8 nm for PCP45 and 99±8 nm for PAA. We also study the effect of the polymer concentration and of the solution pH on the suspension stability.