Carlos Moya

Carlos Moya
Université Libre de Bruxelles | ULB · Faculty of Applied Sciences/Polytechnic School

PhD

About

24
Publications
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294
Citations
Introduction
Currently, I am working at University libre of Brussels in EMNS group with Prof. Gilles Bruylants (http://emns.ulb.be/bio_cma.html). Here I am involved in the SUBLIMUS project where I work in strategies to harvest Nobel metals based on the utilization of iron oxide nanostructures functionalized with calixarenes.

Publications

Publications (24)
Article
Full-text available
Magnetic composites and self-healing materials have been drawing much attention in their respective fields of application. Magnetic fillers enable changes in the material properties of objects, in the shapes and structures of objects, and ultimately in the motion and actuation of objects in response to the application of an external field. Self-hea...
Article
Some of the synthesis methods and physical properties of iron oxide-based magnetic nanoparticles such as Fe3-xO4 and CoxFe3-xO4 are reviewed because of their interest in health, environmental applications, and ultra-high density magnetic recording. Unlike high crystalline quality nanoparticles larger than a few nanometers that show bulk-like magnet...
Preprint
Full-text available
Magnetic magnetite (Fe3O4) and maghemite (γ-Fe2O3) Iron Oxide Nanoparticles (IONPs) have been the object of many investigations, focusing not only on the understanding of their fundamental properties but also on their numerous applications. Their relative ease of production and functionalization, high saturation magnetization at room temperature, l...
Article
Full-text available
Iron oxide nanoparticles (NPs) have been extensively used for both health and technological applications. The control over their morphology, crystal microstructure, and oxidation state is of great importance to optimize their final use. However, while mature in understanding, it is still far from complete. Here we report on the effect of the amount...
Article
Full-text available
The selection and comparative study is reported of calibration curves to quantify iron by a simple UV-Vis protocol based on the formation of iron (III) chloride complexes. The reliability of each calibration curve was evaluated using statistical and analytical parameters. The robustness of each calibration curve using superparamagnetic iron oxide n...
Article
In the last decade there has been profuse research efforts exploring the uses of iron oxide particles in nanomedicine. To great extent, the efficiency of magnetic iron oxide nanoparticles for biomedical applications and the nanoparticles fate depend on how the nanoparticle surface interfaces with the proteins in a physiological environment. It is w...
Article
Full-text available
Magnetic nanoparticles (MNPs) have become increasingly important in biomedical applications like magnetic imaging and hyperthermia based cancer treatment. Understanding their magnetic spin configurations is important for optimizing these applications. The measured magnetization of MNPs can be significantly lower than bulk counterparts, often due to...
Article
Full-text available
We have studied the electronic and chemical properties of a variety of ensembles of size- and shape-selected Fe3O4 nanoparticles with single-particle sensitivity by means of synchrotron-based X-ray photoemission electron microscopy. The local X-ray absorption spectra reveal that the oxidation states and the amount and type of cations within the ind...
Article
The behavior of cube-shaped Fe3O4 nanoparticles is compared with that of similar spherical particles to reveal the effects of surface and shape anisotropy. Magnetostatic interactions in nanocube and nanosphere assemblies are analyzed in terms of an interaction parameter and an activation volume, and compared with theoretical predictions for the mag...
Article
The control of magnetic interactions is becoming essential to expand/improve the applicability of magnetic nanoparticles (NPs). Here, we show that an optimized microemulsion method can be used to obtain homogenous silica coatings on even single magnetic nuclei of highly crystalline Fe3−xO4 NPs (7 and 16 nm) derived from a high-temperature method. W...
Data
Full-text available
A general method for the quantification ofdipolar interactions in assemblies of nanoparticles has beendeveloped from a model sample constituted by magnetitenanoparticles of 5 nm in diameter, in powder form with oleicacid as a surfactant so that the particles were solely separatedfrom each other through an organic layer of about 1 nm inthickness. Th...
Article
Full-text available
A general method for the quantification of dipolar interactions in assemblies of nanoparticles has been developed from a model sample constituted by magnetite nanoparticles of 5 nm in diameter, in powder form with oleic acid as a surfactant so that the particles were solely separated from each other through an organic layer of about 1 nm in thickne...
Article
Full-text available
Magnetic domain configurations in two samples containing small aggregates of Fe3-xO4 nanoparticles of about 11 and 49 nm in size, respectively, were characterized by magnetic force microscopy (MFM). Two distinct magnetic behavior were observed depending on particle size. Aggregates constituted of nanoparticles about 11 nm in size showed uniform dar...
Article
Full-text available
This work reports on the role of the oleic acid concentration on the magnetic and structural properties of Fe 3-x O 4 nanoparticles synthesized by thermal decomposition of Fe(acac) 3 in benzyl-ether. This method allows the synthesis of highly monodisperse particles ranging from 7 to 100 nm in size by only varying the concentration of the oleic acid...
Article
Full-text available
A general method for the quantification of dipolar interactions in assemblies of nanoparticles has been developed from a model sample constituted by magnetite nanoparticles of 5 nm in diameter, in powder form with oleic acid as a surfactant so that the particles were solely separated from each other through an organic layer of about 1 nm in thickne...
Article
Full-text available
This work reports on the effect of the 1,2-hexadecanediol content on the structural and magnetic properties of CoFe2O4 nanoparticles synthesized by thermal decomposition of metal-organic precursors in 1-octadecene. Although pseudo-spherical particles having an average size of about 8 nm and similar stoichiometry have been observed in all studied sa...
Article
Full-text available
This work reports on the experimental characterization of the magnetic domain configurations in cubic, isolated Fe3-xO4 nanoparticles with a lateral size of 25-30 nm. The magnetic polarity at remanence of single domain ferrimagnetic Fe3-xO4 nanoparticles deposited onto a carbon-silicon wafer is observed by magnetic force microscopy. The orientation...
Article
Full-text available
This work reports on the study of three samples of 8 nm Co-ferrite particles prepared by standard methods based on the thermal decomposition of metalorganic precursors. Although all samples are single phase according to conventional techniques of structural and chemical characterization, they show strongly sample-dependent magnetic properties rangi...
Article
Full-text available
We present radio frequency transverse susceptibility (TS) measurements on oleic acid-coated and SiO2-coated Fe3-xO4 magnetite nanoparticles. The effects of the type of coating on the interparticle interactions and magnetic anisotropy are evaluated for two different particle sizes in powder samples. On the one hand, SiO2 coating reduces the interpar...
Article
The study of the reactivity of the 3-methoxyimino-2-phenyl-3H-indoles C6H4-4R1-1-[C8H4N-3'-NOMe] [R1 = Cl (1a) or H (1b)] with cis-[PtCl2(dmso)2] has allowed the isolation of trans-[Pt{C6H4-4R1-1-[C8H4N-3'-NOMe]}Cl2(dmso)] [R1 = Cl (2a) or H (2b)] and cis-[Pt{C6H4-4R1-1-[C8H4N-3'-NOMe]}Cl2(dmso)]·CH2Cl2 [R1 = Cl (3a) or H (3b)]. Their crystal struc...
Article
The direct cyclopalladation of 3- methoxyimino- 2-( 4- chlorophenyl)- 3H- indole ( 1a) and 3- methoxyimino2- phenyl- 3H- indole ( 1b) results in the regioselective activation of the ortho r[ C( sp2, phenyl)- H] bond affording ( l- OAc) 2[ Pd{j2- C, N- C6H3- 4R- 1-( C8H4N- 30- NOMe)}] 2 ( 2) {R = Cl ( 2a) or H ( 2b)} that contain a central `` Pd( l-...