| 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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Ihiawakrim, Dris
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (21/21 displayed)
- 2024Ultrasonic chemical synthesis of zinc-manganese ferrites with improved magnetic properties.citations
- 2024Tailoring the pore structure of iron oxide core@stellate mesoporous silica shell nanocomposites: effects on MRI and magnetic hyperthermia properties and applicability to anti-cancer therapiescitations
- 2022A detailed investigation of the core@shell structure of exchanged coupled magnetic nanoparticles after performing solvent annealingcitations
- 2022TiO2 supported Co catalysts for the hydrogenation of γ-valerolactone to 2methyltetrahydrofuran: influence of the supportcitations
- 2022Shedding light on functional hybrid nanocomposites 19th century paint mediumcitations
- 2021Versatile template-directed synthesis of gold nanocages with a predefined number of windowscitations
- 2020Quantitative Analysis of the Specific Absorption Rate Dependence on the Magnetic Field Strength in ZnxFe3−xO4 Nanoparticlescitations
- 2020Efficiency of pyoverdines in iron removal from flocking asbestos waste: An innovative bacterial bioremediation strategycitations
- 2019Study by advanced transmission electron microscopy techniques fragile materials
- 2019The effect of basic pH on the elaboration of ZnFe2O4 nanoparticles by co-precipitation method: Structural, magnetic and hyperthermia characterizationcitations
- 2019The effect of basic pH on the elaboration of ZnFe2O4 nanoparticles by co-precipitation method: Structural, magnetic and hyperthermia characterizationcitations
- 2018High pressures pathway toward boron-based nanostructured solidscitations
- 2018High pressures pathway toward boron-based nanostructured solidscitations
- 2016Metal nanoparticle mediated space charge and its optical control in an organic hole-only devicecitations
- 2016Surface plasmon resonance of an individual nano-object on an absorbing substrate : quantitative effects of distance and 3D orientationcitations
- 2016Surface plasmon resonance of an individual nano-object on an absorbing substrate : quantitative effects of distance and 3D orientationcitations
- 2016Advanced three dimensional characterization of silica-based ultraporous materialscitations
- 2014Magnetic Properties of Mono- and Multilayer Assemblies of Iron Oxide Nanoparticles Promoted by SAMscitations
- 2013A single-stage functionalization and exfoliation method for the production of graphene in water: stepwise construction of 2D-nanostructured composites with iron oxide nanoparticlescitations
- 2013A single-stage functionalization and exfoliation method for the production of graphene in water: stepwise construction of 2D-nanostructured composites with iron oxide nanoparticlescitations
- 2012Hexahistidine-Tagged Single-Walled Carbon Nanotubes (His6-tagSWNTs): A Multifunctional Hard Template for Hierarchical Directed Self-Assembly and Nanocomposite Constructioncitations
Places of action
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article
Magnetic Properties of Mono- and Multilayer Assemblies of Iron Oxide Nanoparticles Promoted by SAMs
Abstract
Owing to the wide scope of applications of magnetic nanoparticle assembling, the aim of this study is to evaluate the influence of nanoparticle aggregates on the magnetic properties of 2D assemblies. Magnetic iron oxide nanoparticles (NPs) have been synthesized by the coprecipitation (NPcop) and thermal decomposition (NPdec@OA) methods, and were assembled on self-assembled monolayers of organic molecules decorated by a phosphonic acid terminal group at their surface (SAM-PO3H2). The nanostructure and magnetic properties of assemblies depend directly on the aggregation of NP suspensions. NPcop, result in an unstable suspension and were assembled into a non-homogeneous monolayer of aggregates. The post-functionalization of NPcop with oleic acid after synthesis (NPcop@OA) favors a better stability of the suspension and enhances the nanostructure of the assembly, although smaller NP aggregates remain. In contrast, NPdec@OA which are functionalized in situ by oleic acid during the synthesis step were assembled as individual nanomagnets and result in a dense monolayer. Multi layer assemblies were also prepared from NPcop@OA and NPdec@OA by performing the alternative deposition of these NPs with (1,4-phenylene)bisphosphonic acid. The nanostructure of assemblies has been studied by scanning electron microscopy (SEM) and atomic force microscopy (AFM). The magnetic properties of monolayer and multilayer assemblies have been studied by using a SQUID magnetometer. While assemblies of individual NPs enhance dipolar interactions in-plane as a result of shape anisotropy, assemblies of NP aggregates favor stronger dipolar interactions with random orientation. The magnetic properties of monolayer and multilayer assemblies have also been compared. The dimensionality (2D vs 3D) has a strong effect on the dipolar interactions when individual NPs are considered in contrast to aggregated nanoparticles.