Fe nanoparticles have been grown by sputtering technique on sapphire substrates. The fabrication ... more Fe nanoparticles have been grown by sputtering technique on sapphire substrates. The fabrication parameters (substrate temperature, rate, ) allow us to change the nanoparticle sizes at will. Different elements have been deposit on top of these Fe nanoparticles. The magnetic behaviour of the Fe nanoislands strongly depends of the capping material, for instance capping with thin Al film does not
We have synthesized Eu-doped NaBi(MoO4)2 nanoparticles functionalized with PAA whose properties m... more We have synthesized Eu-doped NaBi(MoO4)2 nanoparticles functionalized with PAA whose properties make them excellent multimodal contrast agents for X-ray computed tomography and luminescent bioimaging, as illustrated using a C. Elegans animal model.
We report on a novel synthesis method, which produces uniform nanoparticles consisting of tetrago... more We report on a novel synthesis method, which produces uniform nanoparticles consisting of tetragonal NaY(MoO4)2, having almost spherical shape and hydrophilic character. The procedure is also suitable for the preparation...
Uniform Nd3+-doped LuVO4 nanophosphors have been synthesized for the first time in literature by ... more Uniform Nd3+-doped LuVO4 nanophosphors have been synthesized for the first time in literature by using a poliol-based method at 120 °C from Nd3+ and vanadate precursors. After optimizing the Nd doping level, these phosphors present intense luminescence in the near-infrared biological windows. The X-ray attenuation capacity of the optimum nanophosphor has been found to be higher than that of a commercial X-ray computed tomography contrast agent. After surface coating with polyacrylic acid, such nanoparticles present high colloidal stability in physiological pH medium and high cell viability. Because of these properties, the developed Nd3+-doped LuVO4 nanoparticles have potential applications as a bimodal probe for NIR luminescent bioimaging and X-ray computed tomography.
Dalton transactions (Cambridge, England : 2003), Jan 23, 2016
A method for the synthesis of non-aggregated and highly uniform Eu(3+) doped NaGd(MoO4)2 nanopart... more A method for the synthesis of non-aggregated and highly uniform Eu(3+) doped NaGd(MoO4)2 nanoparticles is reported for the first time. The obtained particles present tetragonal structure, ellipsoidal shape and their size can be varied by adjusting the experimental synthesis parameters. These nanoparticles, which were coated with citrate anions and functionalised with PLL, have also been developed in order to improve their colloidal stability in physiological medium (2-(N-morpholino)ethanesulfonic acid, MES). A study of the luminescent dynamics of the samples as a function of the Eu doping level has been conducted in order to find the optimum nanophosphors, whose magnetic relaxivity and cell viability have also been evaluated for the first time for this system, in order to assess their suitability as multifunctional probes for optical (in vitro) and magnetic bioimaging applications.
Fe nanoparticles have been grown by sputtering technique on sapphire substrates. The fabrication ... more Fe nanoparticles have been grown by sputtering technique on sapphire substrates. The fabrication parameters (substrate temperature, rate, ) allow us to change the nanoparticle sizes at will. Different elements have been deposit on top of these Fe nanoparticles. The magnetic behaviour of the Fe nanoislands strongly depends of the capping material, for instance capping with thin Al film does not
We have synthesized Eu-doped NaBi(MoO4)2 nanoparticles functionalized with PAA whose properties m... more We have synthesized Eu-doped NaBi(MoO4)2 nanoparticles functionalized with PAA whose properties make them excellent multimodal contrast agents for X-ray computed tomography and luminescent bioimaging, as illustrated using a C. Elegans animal model.
We report on a novel synthesis method, which produces uniform nanoparticles consisting of tetrago... more We report on a novel synthesis method, which produces uniform nanoparticles consisting of tetragonal NaY(MoO4)2, having almost spherical shape and hydrophilic character. The procedure is also suitable for the preparation...
Uniform Nd3+-doped LuVO4 nanophosphors have been synthesized for the first time in literature by ... more Uniform Nd3+-doped LuVO4 nanophosphors have been synthesized for the first time in literature by using a poliol-based method at 120 °C from Nd3+ and vanadate precursors. After optimizing the Nd doping level, these phosphors present intense luminescence in the near-infrared biological windows. The X-ray attenuation capacity of the optimum nanophosphor has been found to be higher than that of a commercial X-ray computed tomography contrast agent. After surface coating with polyacrylic acid, such nanoparticles present high colloidal stability in physiological pH medium and high cell viability. Because of these properties, the developed Nd3+-doped LuVO4 nanoparticles have potential applications as a bimodal probe for NIR luminescent bioimaging and X-ray computed tomography.
Dalton transactions (Cambridge, England : 2003), Jan 23, 2016
A method for the synthesis of non-aggregated and highly uniform Eu(3+) doped NaGd(MoO4)2 nanopart... more A method for the synthesis of non-aggregated and highly uniform Eu(3+) doped NaGd(MoO4)2 nanoparticles is reported for the first time. The obtained particles present tetragonal structure, ellipsoidal shape and their size can be varied by adjusting the experimental synthesis parameters. These nanoparticles, which were coated with citrate anions and functionalised with PLL, have also been developed in order to improve their colloidal stability in physiological medium (2-(N-morpholino)ethanesulfonic acid, MES). A study of the luminescent dynamics of the samples as a function of the Eu doping level has been conducted in order to find the optimum nanophosphors, whose magnetic relaxivity and cell viability have also been evaluated for the first time for this system, in order to assess their suitability as multifunctional probes for optical (in vitro) and magnetic bioimaging applications.
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Papers by Nuria Nuñez