Listar QA - Artículos por fecha de publicación
Mostrando ítems 1-20 de 28
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Recent Development in Optical Fiber Biosensors
Ruiz-Sanchez, Antonio Jesus; Sánchez-Rojas, María Fuensanta
; Bosch-Ojeda, Catalina; Espinosa-Bosch, Maria (MDPI, 2007)
Remarkable developments can be seen in the field of optical fibre biosensors in the last decade. More sensors for specific analytes have been reported, novel sensing chemistries or transduction principles have been introduced, ... -
Cation template assisted oligoethylene glycol desymmetrization by intramolecular Cannizzaro reaction of topologically remote aldehydes.
Ruiz-Sanchez, Antonio Jesus; Vida-Pol, Yolanda; Suau Suárez, Rafael; Pérez-de-Inestrosa-Villatoro, Ezequiel (Elsevier, 2008)
Oligoethylene glycol chains containing 2–5 ethylene glycol units, and possessing a benzyl alcohol and a benzoic acid end groups, can be quantitatively obtained by intramolecular Cannizzaro reaction of the corresponding ... -
Analytical methodologies for the determination of cisplatin
Espinosa-Bosch, Maria; Ruiz-Sánchez, Antonio Jesús; Sánchez-Rojas, María Fuensanta; Bosch-Ojeda, Catalina (ScienceDirect, 2008-07-15)
cis-Diamminedichloroplatinum(II) (cisplatin) is a important chemotherapeutic drug for cancer treatment since 1978. Unfortunately, because of the severe side-effects like nephrotoxicity, ototoxicity, etc., they are administered ... -
Role of minor determinants of amoxicillin in the diagnosis of immediate allergic reactions to amoxicillin.
Background: Skin testing of subjects with immediate hypersensitivity to amoxicillin is performed using major and minor determinants of benzylpenicillin plus amoxicillin. However, sensitivity is not optimal, and other ... -
Dendrimer-Modified Solid Supports: Nanostructured Materials with Potential Drug Allergy Diagnostic Applications
Ruiz-Sanchez, Antonio Jesus; Montañez-Vega, María Isabel; Nájera-Albendín, Francisco; Vida-Pol, Yolanda; Pérez-de-Inestrosa-Villatoro, Ezequiel (CURRENT MEDICINAL CHEMISTRY, 2012)
Complex functional materials consisting of bioactive molecules immobilized on solid supports present potential applications in biosensoring. Advances in the fabrication of these surface materials are of growing interest ... -
Synthesis of all-aliphatic polyamide dendrimers based on a 3,3′-diaminopivalic acid scaffold.
Ruiz-Sánchez, Antonio Jesús; Mesa-Antúnez, Pablo; Barbero, Nekane; Collado-Martín, Daniel; Vida-Pol, Yolanda; Nájera-Albendín, Francisco; Pérez-de-Inestrosa-Villatoro, Ezequiel[et al.] (RSC publication, 2015-03-09)
Over recent years the importance of dendrimers has continued to increase in both life and material sciences. Multiple chemical strategies have been described toward the preparation of dendrimeric structures. Here, we present ... -
Atomization efficiency and photon yield in laser-induced breakdown spectroscopy analysis of single nanoparticles in an optical trap.
Purohit, Pablo; Fortes-Román, Francisco Javier; Laserna-Vázquez, José Javier (Elsevier, 2017-02-16)
Laser-induced breakdown spectroscopy (LIBS) was employed for investigating the influence of particle size on the dissociation efficiency and the absolute production of photons per mass unit of airborne solid graphite spheres ... -
Spectral identification in the attogram regime through laser-induced emission of single optically-trapped nanoparticles in air.
Purohit, Pablo; Fortes-Román, Francisco Javier; Laserna-Vázquez, José Javier (Wiley-VCH, 2017-09-06)
Current trends in nanoengineering are bringing along new structures of diverse chemical compositions that need to be meticulously defined in order to ensure their correct operation. Few methods can provide the sensitivity ... -
Sub-femtogram simultaneous elemental detection in multicomponent nanomatrices using laser-induced plasma emission spectroscopy within atmospheric pressure optical traps.
Purohit, Pablo; Fortes-Román, Francisco Javier; Laserna-Vázquez, José Javier (American Chemical Society, 2019-05-10)
Simultaneous detection of multiple constituents in the characterization of state-of-the-art nanomaterials is an elusive topic to a majority of the analytical techniques covering the field of nanotechnology. Optical catapulting ... -
Semiautomatic method for the ultra-trace arsenic speciation in environmental and biological samples via magnetic solid phase extraction prior to HPLC-ICP-MS determination
Montoro-Leal, Pablo; García-Mesa, Juan Carlos; Morales-Benítez, Irene; García-de-Torres, Amparo; Vereda-Alonso, Elisa Isabel (Elsevier B.V., 2021)
A novel magnetic functionalized material based on graphene oxide and magnetic nanoparticles (MGO) was used to develop a magnetic solid phase extraction method (MSPE) to enrich both, inorganic and organic arsenic species ... -
Optical trapping as a morphologically selective tool for in-situ LIBS elemental characterization of single nanoparticles generated by laser ablation of bulk targets in air
Purohit, Pablo; Fortes-Román, Francisco Javier; Laserna-Vázquez, José Javier (American Chemical Society, 2021-01-05)
In the present work, authors introduce a shape-specific methodology for evaluating the full elemental composition of single micro and nanoparticles fabricated by laser ablation of bulk targets. For this purpose, bronze ... -
Sensitive determination of mercury by magnetic dispersive solid-phase extraction combined with flow-injection-cold vapour-graphite furnace atomic absorption spectrometry
García-Mesa, Juan Carlos; Montoro-Leal, Pablo; Maireles-Rivas, Silvia; López-Guerrero, María del Mar; Vereda-Alonso, Elisa Isabel (Royal Society of Chemistry, 2021-03-31)
Mercury is a non-essential trace element that is toxic to humans due to the bioaccumulation effect. In this work, a ferrofluid based on Fe3O4@graphene oxide nanospheres together with an ionic liquid was used to develop a ... -
Size-dependent synergetic seeding effects in the inspection of airborne dry nanoaerosols by LIBS.
Purohit, Pablo; Fortes-Román, Francisco Javier; Malegiannaki, I.; Jaime-Fernández, Lourdes; Laserna-Vázquez, José Javier (Elsevier, 2021-11-18)
In the present paper, confined dry Cu nanoaerosols of controlled particle size are inspected under a time-resolved LIBS scheme to explore the effect of laser-particulate matter interaction upon the detection capability of ... -
LIBS-Acoustic Mid-Level Fusion Scheme for Mineral Differentiation under Terrestrial and Martian Atmospheric Conditions
Álvarez-Llamas, César; Purohit, Pablo; Laserna-Vázquez, José Javier (American Chemical Society, 2022-01-12)
The shockwave produced alongside the plasma during a laser-induced breakdown spectroscopy event can be recorded as an acoustic pressure wave to obtain information related to the physical traits of the inspected sample. In ... -
Magnetic graphene molecularly imprinted polypyrrole polymer (MGO@MIPy) for electrochemical sensing of malondialdehyde in serum samples
Montoro-Leal, Pablo; Zougagh, Mohammed; Sánchez-Ruiz, Antonio; Rios, Angel; Vereda-Alonso, Elisa Isabel (Elsevier, 2022-03-12)
A modified screen-printed carbon electrode (SPCE) has been designed and fabricated for the determination of malondialdehyde (MDA), an important biomarker of oxidative stress. Magnetic graphene oxide (MGO) was synthesized ... -
Differentiation of closely related mineral phases in Mars atmosphere using frequency domain laser-induced plasma acoustics.
Álvarez-Llamas, César; Purohit, Pablo; Moros-Portolés, Javier; Laserna-Vázquez, José Javier (Elsevier, 2022-08-16)
The combination of data yielded by laser-induced breakdown spectroscopy (LIBS) and laser-induced plasma acoustics (LIPAc) is a topic of many prospective applications as these coexisting phenomena can cover different sample ... -
A Molecularly Imprinted Polypyrrole/GO@Fe3O4 Nanocomposite Modified Impedimetric Sensor for the Routine Monitoring of Lysozyme
Montoro-Leal, Pablo; Morales Frías, Isaac Aarón; Vereda-Alonso, Elisa Isabel; Errachid, Abdelhamid; Jaffrezic-Renault, Nicole (IOAP-MPDI, 2022-09-05)
Lysozyme (LYS) applications encompass anti-bacterial activity, analgesic, and anti-inflammatory effects. In this work, a porous framework that was based on the polymerization of pyrrole (PPy) in the presence of multi-functional ... -
A systematic evaluation on the impact of sample-related and environmental factors in the analytical performance of acoustic emission from laser-induced plasmas
Bosáková, Markéta; Purohit, Pablo; Álvarez-Llamas, César; Moros-Portolés, Javier; Novotný, Karel; Laserna-Vázquez, José Javier[et al.] (Elsevier, 2022-09-08)
Acoustics recordings from laser-induced plasmas are becoming increasingly regarded as a complementary source of information from the inspected sample. The propagation of these waves is susceptible to be modified by the ... -
Magnetic graphene oxide as a valuable material for the speciation of trace elements
Morales-Benítez, Irene; Montoro-Leal, Pablo; García-Mesa, Juan Carlos; Verdeja-Galán, J; Vereda-Alonso, Elisa Isabel (Elsevier, 2022-12)
Magnetic solid phase extraction (MSPE) has been explored for the application in preconcentration processes to achieve highly sensible analytical methods. Attending to the different magnetic adsorbent materials used in this ... -
The crucial role of molecular emissions on LIBS differentiation of organic compounds of interest in astrobiology under a Mars simulated atmosphere
Delgado-Pérez, Tomás; Fortes-Román, Francisco Javier; Cabalín-Robles, Luisa María; Laserna-Vázquez, José Javier (Elsevier, 2022-12-04)
In this work, the influence of Martian atmosphere on the recombination mechanisms in laser-induced plasmas of organic compounds of interest in astrobiology has been closely examined. The proposed LIBS methodology reveals ...