Persona: Mateo Marti, Eva
Dirección de correo electrónico
Fecha de nacimiento
Proyectos de investigación
Unidades organizativas
Centro de Astrobiologia
El Centro de Astrobiología (CAB) es un centro mixto de investigación en astrobiología, dependiente tanto del Instituto Nacional de Técnica Aeroespacial (INTA) como del Consejo Superior de Investigaciones Científicas (CSIC).
Puesto de trabajo
Apellidos
Mateo Marti
Nombre de pila
Eva
Nombre
24 resultados
Resultados de la búsqueda
Mostrando 1 - 10 de 24
Publicación Acceso Abierto CO2 adsorption capacities of amine-functionalized microporous silica nanoparticles(Elsevier, 2021-11-06) Cueto Díaz, Eduardo J.; Suárez García, Fabián; Gálvez Martínez, Santos; Valles González, M. P.; Mateo Marti, Eva; Ministerio de Economía y Competitividad (MINECO); Gobierno del Principado de AsturiasEfforts on CO2 capture have intensified as climate change compromises ecosystems and biodiversity. Therefore, it is crucial to develop different methods for CO2 sequestration to improve solid sorbent capabilities (NPs). To this end, the surface of 200-nm silica nanoparticles (SiO2NPs) was covalently anchored with aminated ligands, 3-aminopropyltriethoxysilane (APTES), poly(amidoamine) dendrimers (PAMAM) and a short peptide comprising two lysine units, aiming for CO2 adsorption over a wide range of pressures. Our goal was to explore the influence of functional chemical groups (attached to the SiO2NPs) on CO2 sequestration. The observed results showed that at low and high CO2 gas pressure conditions, typical APTES functionalized SiO2Np surpassed the CO2 adsorption capacities of dendritic and peptide-based nanoparticles bearing amine-polymer functionalities, a remarkable effect that was investigated in this work. In addition, a convenient and facile method to decorate and quantify SiO2 nanoparticles with PAMAM and a short peptide is reported.Publicación Acceso Abierto Rapid SARS-CoV-2 sensing through oxygen reduction reaction catalysed by Au@Pt/Au core@shell nanoparticles(Elsevier, 2024-12-01) Martínez-Periñán, Emiliano; Palomares-Albarrán, María; Toyos-Rodríguez, Celia; Mateo Marti, Eva; Pariente, Félix; Escosura-Muñiz, Alfredo de la; Gutiérrez-Sánchez, Cristina; Revenga-Parra, Mónica; Lorenzo, Encarnación; Agencia Estatal de Investigación (España); Ministerio de Ciencia e Innovación (MICINN); Comunidad de MadridThe development of rapid, accurate, sensitive, and low-cost diagnostic methods for COVID-19 detection in real-time is the unique way to control infection sources and monitor illness progression. In this work, we propose an electrochemical biosensor for the rapid and accuracy diagnosis of COVID-19, through the determination of ORF1ab specific sequence. The biosensor is based on the immobilization of a thiolated sequence partially complementary (domain 1) to ORF1ab on gold screen-printed electrodes and the use of bifunctional Au@Pt/Au core@shell nanoparticles modified with a second thiolated sequence partially complementary to ORF1ab (domain 2) as electrochemical indicator of the hybridization of DNA sequences. The synthesized Au@Pt/Au nanoparticles consist of an Au core, a shell of Pt (Au@Pt NPs), that provides an excellent electrocatalytic activity toward the oxygen reduction reaction (ORR) even after formation of hybrid biomaterials by modification, through the Au protuberances growth on the NPs surface, with an oligonucleotide with recognition ability. The ORR electrochemical activity, enhanced by the label element (Au@Pt/Au NPs), has been employed, for the first time, as indicator of the hybridization event. Based on this strategy, target sequences of the SARS-CoV-2 virus have been detected with a detection limit of 32 pM. The selectivity of the biosensor was confirmed by analysing ORF1ab sequence in the presence of DNA sequences from other viruses. The biosensor has been successfully applied to the direct detection of the virus in non-amplified samples of nasopharyngeal swabs from infected and non-infected patients. Results compare well with those obtained through RT-qPCR but our method is more rapid since does not need any amplification process.Publicación Acceso Abierto Prebiotic synthesis of noncanonical nucleobases under plausible alkaline hydrothermal conditions(Springer Nature, 2022-09-07) Pérez Fernández, Cristina; Vega, Jorge; Rayo Pizarroso, P.; Mateo Marti, Eva; Ruiz-Bermejo, Marta; Instituto Nacional de Técnica Aeroespacial (INTA); Ministerio de Economía y Competitividad (MINECO); Agencia Estatal de Investigación (AEI); Ministerio de Ciencia, Innovación y Universidades (MICIN); Centro de Astrobiología del Instituto Nacional de Técnica Aeroespacial y CSIC, MDM-2017-0737Herein, the potential of alkaline hydrothermal environments for the synthesis of possible ancestral pre-RNA nucleobases using cyanide as a primary source of carbon and nitrogen is described. Water cyanide polymerizations were assisted by microwave radiation to obtain high temperature and a relatively high pressure (MWR, 180 °C, 15 bar) and were also carried out using a conventional thermal system (CTS, 80 °C, 1 bar) to simulate subaerial and aerial hydrothermal conditions, respectively, on the early Earth. For these syntheses, the initial concentration of cyanide and the diffusion effects were studied. In addition, it is well known that hydrolysis conditions are directly related to the amount and diversity of organic molecules released from cyanide polymers. Thus, as a first step, we studied the effect of several hydrolysis procedures, generally used in prebiotic chemistry, on some of the potential pre-RNA nucleobases of interest, together with some of their isomers and/or deamination products, also presumably formed in these complex reactions. The results show that the alkaline hydrothermal scenarios with a relatively constant pH are good geological scenarios for the generation of noncanonical nucleobases using cyanide as a prebiotic precursor.Publicación Acceso Abierto SuperCam Calibration Targets: Design and Development(Springer Link, 2020-11-26) Manrique, J. A.; López Reyes, G.; Cousin, Agnes ; Rull, F.; Maurice, Sylvestre; Wiens, Roger; Madariaga, M. B.; Gasnault, O.; Aramendia, J.; Arana, G.; Beck, P.; Bernard, S.; Bernardi, P.; Bernt, M. H.; Berrocal, A.; Beyssac, O.; Caïs, P.; Castro, K.; Clegg, S. M.; Cloutis, E.; Dromart, G.; Drouet, C.; Dubois, B.; Escribano, D.; Fabre, C.; Fernández, A.; Forni, Olivier; García Baonza, V.; Gontijo, I.; Johnson, J. R.; Laserna, Javier; Lasue, J.; Madsen, Soren N.; Mateo Marti, Eva; Medina García, J.; Meslin, P.; Montagnac, G.; Moros, J.; Ollila, A. M.; Ortega, Cristina; Prieto-Ballesteros, Olga; Reess, J. M.; Robinson, S.; Rodríguez, Joseph; Saiz, J.; Sanz Arranz, Aurelio ; Sard, I.; Sautter, V.; Sobron, P.; Toplis, M.; Veneranda, M.; Agencia Estatal de Investigación (AEI)SuperCam is a highly integrated remote-sensing instrumental suite for NASA’s Mars 2020 mission. It consists of a co-aligned combination of Laser-Induced Breakdown Spectroscopy (LIBS), Time-Resolved Raman and Luminescence (TRR/L), Visible and Infrared Spectroscopy (VISIR), together with sound recording (MIC) and high-magnification imaging techniques (RMI). They provide information on the mineralogy, geochemistry and mineral context around the Perseverance Rover. The calibration of this complex suite is a major challenge. Not only does each technique require its own standards or references, their combination also introduces new requirements to obtain optimal scientific output. Elemental composition, molecular vibrational features, fluorescence, morphology and texture provide a full picture of the sample with spectral information that needs to be co-aligned, correlated, and individually calibrated. The resulting hardware includes different kinds of targets, each one covering different needs of the instrument. Standards for imaging calibration, geological samples for mineral identification and chemometric calculations or spectral references to calibrate and evaluate the health of the instrument, are all included in the SuperCam Calibration Target (SCCT). The system also includes a specifically designed assembly in which the samples are mounted. This hardware allows the targets to survive the harsh environmental conditions of the launch, cruise, landing and operation on Mars during the whole mission. Here we summarize the design, development, integration, verification and functional testing of the SCCT. This work includes some key results obtained to verify the scientific outcome of the SuperCam system.Publicación Restringido Raman Laser Spectrometer (RLS) calibration target design to allow onboard combined science between the RLS and MicrOmega instruments on the ExoMars rover(Wiley Analytical Science, 2020-01-23) López Reyes, G.; Pilorget, C.; Moral, Andoni G.; Manrique, J. A.; Sanz Arranz, Aurelio; Berrocal, A.; Veneranda, M.; Rull, F.; Medina García, J.; Hamm, V.; Bibring, J. P.; Rodríguez, J. A.; Pérez Canora, C.; Mateo Marti, Eva; Prieto-Ballesteros, Olga; Lalla, E.; Vago, J. L.; Ministerio de Economía y Competitividad (MINECO); Agencia Estatal de Investigación (AEI); López Reyes, G. [0000-0003-1005-1760]; Prieto Ballesteros, O. [0000-0002-2278-1210]; Manrique, J. A. [0000-0002-2053-2819]; Moral, A. G. [0000-0002-6190-8560]; Venerada, M. [0000-0002-7185-2791]; Unidad de Excelencia Científica María de Maeztu Centro de Astrobiología del Instituto Nacional de Técnica Aeroespacial y CSIC, MDM-2017-0737The ExoMars rover, scheduled to be launched in 2020, will be equipped with a novel and diverse payload. It will also include a drill to collect subsurface samples (from 0‐ to 2‐m depth) and deliver them to the rover analytical laboratory, where it will be possible to perform combined science between instruments. For the first time, the exact same sample target areas will be investigated using complementary analytical methods—infrared spectrometry, Raman spectrometry, and laser desorption mass spectrometry—to establish mineralogical and organic chemistry composition. Fundamental for implementing this cooperative science strategy is the Raman Laser Spectrometer (RLS) calibration target (CT). The RLS CT features a polyethylene terephthalate disk used for RLS calibration and verification of the instrument during the mission. In addition, special patterns have been recorded on the RLS CT disk that the other instruments can detect and employ to determine their relative position. In this manner, the RLS CT ensures the spatial correlation between the three analytical laboratory instruments: MicrOmega, RLS, and MOMA. The RLS CT has been subjected to a series of tests to qualify it for space utilization and to characterize its behavior during the mission. The results from the joint work performed by the RLS and MicrOmega instrument teams confirm the feasibility of the “combined science” approach envisioned for ExoMars rover operations, whose science return is optimized when complementing the RLS and MicrOmega joint analysis with the autonomous RLS operation.Publicación Acceso Abierto A Lizardite–HCN Interaction Leading the Increasing of Molecular Complexity in an Alkaline Hydrothermal Scenario: Implications for Origin of Life Studies(Multidisciplinary Digital Publishing Institute (MDPI), 2021-07-06) Villafañe Barajas, S. A.; Ruiz Bermejo, Marta; Rayo Pizarroso, P.; Gálvez Martínez, Santos; Mateo Marti, Eva; Colín García, M.; Villafañe Barajas, S. [0000-0003-3087-4457]; Ruiz Bermejo, M. [0000-0002-8059-1335]; Martí, E. M. [0000-0003-4709-4676]; Colín García, M. [0000-0002-9193-1761]Hydrogen cyanide, HCN, is considered a fundamental molecule in chemical evolution. The named HCN polymers have been suggested as precursors of important bioorganics. Some novel researches have focused on the role of mineral surfaces in the hydrolysis and/or polymerization of cyanide species, but until now, their role has been unclear. Understanding the role of minerals in chemical evolution processes is crucial because minerals undoubtedly interacted with the organic molecules formed on the early Earth by different process. Therefore, we simulated the probable interactions between HCN and a serpentinite-hosted alkaline hydrothermal system. We studied the effect of serpentinite during the thermolysis of HCN at basic conditions (i.e., HCN 0.15 M, 50 h, 100 °C, pH > 10). The HCN-derived thermal polymer and supernatant formed after treatment were analyzed by several complementary analytical techniques. The results obtained suggest that: (I) the mineral surfaces can act as mediators in the mechanisms of organic molecule production such as the polymerization of HCN; (II) the thermal and physicochemical properties of the HCN polymer produced are affected by the presence of the mineral surface; and (III) serpentinite seems to inhibit the formation of bioorganic molecules compared with the control (without mineral).Publicación Restringido Interplay between Fast Diffusion and Molecular Interaction in the Formation of Self-Assembled Nanostructures of S-Cysteine on Au(111)(ACS Publications, 2010-01-21) Mateo Marti, Eva; Rogero, Celia; González, César; Sobrado, J. M.; De Andrés, Pedro L.; Martín Gago, J. A.We have studied the first stages leading to the formation of self-assembled monolayers of S-cysteine molecules adsorbed on a Au(111) surface. Density functional theory (DFT) calculations for the adsorption of individual cysteine molecules on Au(111) at room temperature show low-energy barriers all over the 2D Au(111) unit cell. As a consequence, cysteine molecules diffuse freely on the Au(111) surface and they can be regarded as a 2D molecular gas. The balance between molecule−molecule and molecule−substrate interactions induces molecular condensation and evaporation from the morphological surface structures (steps, reconstruction edges, etc.) as revealed by scanning tunnelling microscopy (STM) images. These processes lead progressively to the formation of a number of stable arrangements, not previously reported, such as single-molecular rows, trimers, and 2D islands. The condensation of these structures is driven by the aggregation of new molecules, stabilized by the formation of electrostatic interactions between adjacent NH3+ and COO− groups, together with adsorption at a slightly more favorable quasi-top site of the herringbone Au reconstruction.Publicación Acceso Abierto A Comprehensive Review of HCN-Derived Polymers(Multidisciplinary Digital Publishing Institute (MDPI), 2021-03-29) Ruiz-Bermejo, Marta; de la fuente, Jose Luis; Pérez Fernández, Cristina; Mateo Marti, Eva; Ruiz Bermejo, M. [0000-0002-8059-1335]; Mateo Martí, E. [0000-0003-4709-4676]; Unidad de Excelencia Científica María de Maeztu del Centro de Astrobiología del Instituto Nacional de Técnica Aeroespacial y CSIC, MDM-2017-0737HCN-derived polymers are a heterogeneous group of complex substances synthesized from pure HCN; from its salts; from its oligomers, specifically its trimer and tetramer, amino-nalono-nitrile (AMN) and diamino-maleo-nitrile (DAMN), respectively; or from its hydrolysis products, such as formamide, under a wide range of experimental conditions. The characteristics and properties of HCN-derived polymers depend directly on the synthetic conditions used for their production and, by extension, their potential applications. These puzzling systems have been known mainly in the fields of prebiotic chemistry and in studies on the origins of life and astrobiology since the first prebiotic production of adenine by Oró in the early years of the 1960s. However, the first reference regarding their possible role in prebiotic chemistry was mentioned in the 19th century by Pflüger. Currently, HCN-derived polymers are considered keys in the formation of the first and primeval protometabolic and informational systems, and they may be among the most readily formed organic macromolecules in the solar system. In addition, HCN-derived polymers have attracted a growing interest in materials science due to their potential biomedical applications as coatings and adhesives; they have also been proposed as valuable models for multifunctional materials with emergent properties such as semi-conductivity, ferroelectricity, catalysis and photocatalysis, and heterogeneous organo-synthesis. However, the real structures and the formation pathways of these fascinating substances have not yet been fully elucidated; several models based on either computational approaches or spectroscopic and analytical techniques have endeavored to shed light on their complete nature. In this review, a comprehensive perspective of HCN-derived polymers is presented, taking into account all the aspects indicated above.Publicación Restringido HCN-derived polymers from thermally induced polymerization of diaminomaleonitrile: A non-enzymatic peroxide sensor based on prebiotic chemistry(Elsevier, 2021-11-24) Ruiz-Bermejo, Marta; García Armada, Pilar; Mateo Marti, Eva; de la fuente, Jose Luis; Ministerio de Ciencia e Innovación (MICINN); Instituto Nacional de Técnica Aeroespacial (INTA); Centro de Astrobiología del Instituto Nacional de Técnica Aeroespacial y CSIC, MDM-2017-0737HCN-derived polymers have recently attracted considerable attention due to their promising applications as multifunctional materials. This study, inspired by plausible early Earth geochemical conditions, describes a strategy to synthesize them from the self-initiated thermal bulk polymerization of the HCN tetramer, diaminomaleonitrile (DAMN), with outstanding sensing properties. These conjugated polymers were obtained through noncatalysed and simple isothermal reactions at 170 °C in the solid-state, and experiments at 190 °C permitted polymerization in the melt. Both processes are highly efficient, allowing quantitative yields of the end products. The conductivity properties of both polymers have been explored to show their high potential, especially DAMN polymers synthesized in melt, as nonenzymatic peroxide sensors. To better understand the differences found between the two series, structural characterisation was carried out using compositional data, Fourier transform infrared (FTIR), nuclear magnetic resonance (NMR) and X-ray photoelectron (XPS) spectroscopies, and X-ray diffraction (XRD) measurements. The interpretation of the structural data suggests that a two-dimensional (2-D) macrostructure based on N-heterocyclics is predominant regardless of the state of monomer aggregation during the course of polymerization, but preferably formed in the melt. The morphological and thermal stability properties of the polymers based on DAMN were also evaluated. Finally, the most likely mechanisms based on the dehydrocyanation and deamination reactions that take place during the polymerization reaction are proposed. This study demonstrates the robust and straightforward character of these thermally activated polymerizations, which are of interest to chemical evolution research and to current materials and surface science.Publicación Acceso Abierto Defects on a pyrite(100) surface produce chemical evolution of glycine under inert conditions: experimental and theoretical approaches(Royal Society of Chemistry, 2019-10-10) Gálvez Martínez, Santos; Escamilla Roa, E.; Zorzano, María-Paz; Mateo Marti, Eva; Martín Torres, J. [0000-0001-6479-2236]; Zorzano, M. P. [0000-0002-4492-9650]; Mateo Martí, E. [0000-0003-4709-4676]; Unidad de Excelencia Científica María de Maeztu Centro de Astrobiología del Instituto Nacional de Técnica Aeroespacial y CSIC, MDM-2017-0737The presence of non-stoichiometric sites on the pyrite(100) surface makes it a suitable substrate for driving the chemical evolution of the amino acid glycine over time, even under inert conditions. Spectroscopic molecular fingerprints prove a transition process from a zwitterionic species to an anionic species over time on the monosulfide enriched surface. By combining experimental and theoretical approaches, we propose a surface mechanism where the interaction between the amino acid species and the surface will be driven by the quenching of the surface states at Fe sites and favoured by sulfur vacancies. This study demonstrates the potential capability of pyrite to act as a surface catalyst.
- «
- 1 (current)
- 2
- 3
- »
