0000000000969123
AUTHOR
Angela Monia Ruggirello
confinement of 5-aza[5]helicene in ytterbium (III) bis(2-ethylhexyl)sulfosucinate reversed micelles
Positively and negatively singly charged aggregates of sodium bis-(ethylhexyl)sulfosuccinate by ESI-mass spectrometry. The first evidence of the formation of reversed micelles in gas phase?
IRMPD-MS ( Infrared Multiphoton Dissociation-Mass Spectrometry) di aggregati supremolecolari carichi positivamente di Bis (2-etilesil) solfosuccinato di sodio (AOTNa) in fase gas”
EXAFS and SAXS Investigation of Frozen Metal-Containing Reverse Micelles Dispersed in n-Heptane
Size-controlled magnetic nanoparticles in surfactant-rich thin films: a combined EXAFS, SAXS, AFM and MFM study
Physicochemical investigation of surfactant-coated gold nanoparticles synthesized in dry reversed micelles
Interactions of vitamin E with biomembrane models: binding to dry and water-containing reversed micelles
Physico-chemical Investigation of the Solubilization of Ytterbium Nitrate in Solutions of Dry AOT Reversed Micelles
THE INTERACTION OF NATIVE DNA WITH Ni(II), Cu(II) and Zn(II) COMPLEXES OF 5-TRIETHYL AMMONIUM METHYL SALICYLIDENE ORTHO-PHENYLENDIIMINE
(2010). Microstructure and magnetic properties of colloidal cobalt nano-clusters.
The magnetic response of nanometer sized Co nanoparticles (NP) prepared using reverse micelle solutions are presented. The use of complementary structural and morphological probes (like transmission electron microscopy, high resolution electron microscopy, X-ray absorption spectroscopy) allowed to relate the magnetic properties to the size, morphology, composition and atomic structure of the nanoparticles. All data agree on the presence of a core–shell structure of NPs made of a metallic Co core surrounded by a thin Co-oxide layer. The core–shell microstructure of NPs affects its magnetic response mainly raising the anisotropy constant.
DRY LECITHIN REVERSED MICELLES AS BIOMEMBRANE MODELS:INTERACTION WITH VITAMIN E
Physicochemical investigation of cobalt-iron cyanide nanoparticles synthesized by a novel solid-solid reaction in confined space
ESI/MS study of singly charged clusters formed by bis-(ethylhexyl)sulfosuccinate (AOT-) and Fe 3+
Self Assembling di tensioattivi in fase gassosa: ESI/MS di aggregati a sigola carica di Yb(AOT)3
Interaction and location of melatonin in cellular membrane models constituted by lecithin and cholesterol anhidrous reversed micellar systems
Confinement of L and D dimethyl tartrate in reverse micelles: an FT-IR and VCD study
Synthesis and Reactivity of Inorganic Salt Nanoparticles Confined in Dry Reversed Micelles
Physicochemical investigation of the 5-aza[5]helicene state in solution of Yb(DEHSS)3 reverse micelles
Evidences for the Formation of Inclusion Complexes of Cyclomaltooligosaccharides (Cyclodextrins) with Melatonin in solid Phase
Interaction and location of melatonin in cellular membrane models constituted by lecithin and cholesterol anhydrous reversed micelles
Analysis of melatonin interaction with receptioral models of biological interest: alfa, beta and gamma-cyclodextrins
Mesoscopic self-organisation of magnetic Cobalt-based nanofibers and nanoclusters in surfactant matrix
Magnetic properties of colloidal cobalt nanoclusters
Abstract. Co nanoclusters were synthesized by an inverse-micelle chemical route. The magnetic and microstructural properties of the nanoparticles have been analyzed as a function of the surfactant (AOT and DEHP) and the drying method. Microstructural analysis has been performed by TEM and XANES; magnetic properties have been studied by hysteresis loops and zero-field cooling - field cooling (ZFC-FC) curves. TEM images show 2 to 4 nm sized particles spherical in shape. XANES measurements point out a significant presence of Co3O4 with metallic Co and some Co2+ bound to the surfactant. The presence of antiferromagnetic Co3O4 explains the magnetic transition observed at low T in both ZFC-FC mea…
Spectroscopic Study of the Interaction of NiII-5-triethyl Ammonium Methyl Salicylidene orto-phenylendiiminato with Native DNA
Confinamento di nitrato di itterbio in micelle inverse di AOT
Structural characterization of frozen n-heptane solutions of metal-containing reverse micelles
The microstructure of temperature-quenched solutions of reverse micelles formed by sodium, cobalt, ytterbium, and cobalt/ytterbium bis(2-ethylhexyl)sulfosuccinate in n-heptane has been investigated by SAXS and EXAFS. Some changes in the X-ray absorption spectra with respect to the same systems at room temperature have been observed. The analysis of the SAXS spectra leads to the hypothesis that at 77 K the closed spherical structure of reverse micelles is retained and that during the temperature quench they undergo a clustering process involving the transition from a quite random dispersion to the formation of more or less large clusters of strongly packed reverse micelles. This behavior is …
structural organization of the internal core of metal containing reverse micelles
Surfactant self-assembling in gas phase: positively monocharged sodium alkanesulfonate clusters
Studi di macroaggregati a singola carica in fase gassosa: AOT in presenza di ioni sodio e itterbio
Spatially ordered surfactant assemblies in the gas phase: negatively charged bis(2-ethylhexyl)sulfosuccinate- alkaline metal ion aggregates
The formation and structural features of negatively charged aggregates of sodium bis(2-ethylhexyl)sulfosuccinate (AOTNa) surfactant molecules in the gas phase have been investigated by electrospray ionization mass spectrometry (ESI-MS) and density functional theory calculations. Mainly driven by the interactions of alkali metal ions both with the oxygen atoms of the sulfonate group and with the succinate moiety of the AOT(-) anion, spatially ordered supramolecular assemblies, characterized by an internal core composed of surfactant counterions and hydrophilic head groups surrounded by the surfactant alkyl chains pointing outwards, are formed. Calculations have shown that surfactant self-org…