A5101839531- Mesoporous Materials and Catalysis
- Polyoxometalates: Synthesis and Applications
- Layered Double Hydroxides Synthesis and Applications
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Atmospheric Ozone and Climate
- Zeolite Catalysis and Synthesis
- Chemical Synthesis and Reactions
- Magnesium Oxide Properties and Applications
- Retinal Diseases and Treatments
- Metal complexes synthesis and properties
- Catalysis and Hydrodesulfurization Studies
- Covalent Organic Framework Applications
- Multicomponent Synthesis of Heterocycles
- Knowledge Societies in the 21st Century
- Catalytic Processes in Materials Science
- Carbon dioxide utilization in catalysis
- Inorganic Chemistry and Materials
- Inorganic and Organometallic Chemistry
- Catalysis for Biomass Conversion
- Educational Innovations and Technology
- Microwave-Assisted Synthesis and Applications
- Chemical Thermodynamics and Molecular Structure
- Atmospheric chemistry and aerosols
- Retinal and Macular Surgery
Universidad de Valladolid
2024
Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine
2024
University of Córdoba
2010-2023
Hospital Universitario Virgen Macarena
2023
Universidad Católica Andrés Bello
2001-2020
Hospital General Universitario de Alicante Doctor Balmis
2020
Instituto de Química y Fisicoquímica Biológicas
2015
Universitat Rovira i Virgili
2013
University of Girona
2010-2011
Universidad Nacional de La Plata
1998-2007
Early detection and grading of Diabetic Retinopathy (DR) is essential to determine an adequate treatment prevent severe vision loss. However, the manual analysis fundus images time consuming DR screening programs are challenged by availability human graders. Current automatic approaches for attempt joint all signs at same time. classification can be optimized if red lesions bright independently processed since task gets divided simplified. Furthermore, clinicians would greatly benefit from...
A suitable methodology of synthesis coumarin derivatives by Pechmann reaction over heterogeneous solid acid catalysts in a free solvent media under microwave irradiation is described. Resorcinol, phenol and ethyl acetoacetate were selected as model reactants the condensation. The catalytic activity several materials—Amberlyst-15, zeolite β sulfonic functionalized hybrid silica—in solvent-free microwave-assisted corresponding has been investigated detail. 7-Hydroxy-4-methylcoumarin...
The synthesis of a family new Ru complexes containing the meridional trpy ligand with general formula [RuII(T)(D)(X)]n+ (T = 2,2′:6′,2′′-terpyridine (trpy); D 3,5-dimethyl-2-(2-pyridyl)pyrrolate (pyrpy), and 2-(1-Methyl-3-pyrazolyl)pyridine (pypz-Me); X Cl, H2O) have been described. All spectroscopically characterized in solution through 1H NMR UV−vis techniques, chloro also solid state monocrystal X-ray diffraction analysis. pyrpy undergoes an oxidation at 3-position pyrrolate ring during...
The synthesis of a family new Ru complexes containing the facial tridentate ligand with general formula [RuII(T)(D)(X)]n+ (T = trispyrazolylmethane (tpm); D ((4S,4′S)-(-)-4,4′,5,5′-tetrahydro-4,4′-bis(1-methylethyl)-2,2′-bioxazole) (iPr-box-C) or N-(1-hydroxy-3-methylbutan-(2S)-(-)-2-yl)-(4S)-(-)-4-isopropyl-4,5-dihydrooxazole-2-carbimidate (iPr-box-O); X Cl, H2O) has been described. All have spectroscopically characterized in solution through 1H NMR and UV–vis techniques, redox properties...
Three periodic mesoporous materials, i.e., two organosilicas with either ethylene or phenylene bridges and one silica, have been used as supports for Pd nanoparticles. All Pd-supported samples (1.0 wt%) were prepared by the incipient wetness method subsequently reduced in an H₂ stream at 200 °C. Both hydrogen chemisorption temperature programmed reduction experiments revealed significant differences depending on support. Pd2+ species more reducible than their silica counterpart. Also,...
The slow thermal decomposition of gaseous OCIO has been investigated between 318 and 333 K at initial pressures 4 120 Torr in vitreous containers. A reaction proceeds while the partial pressure remains higher than a given critical pe(OCIO), an explosion occurs. pe(OCIO) depends on total effective pressure, po(OCIO), follows equation pe(OCIO)=a+bpo(OCIO).The system is explosive regime temperatures > 336 with p(OCIO) ranging 1 70 Torr. Prior to explosion, practically no observed. induction...
Abstract Hybrid materials with tetrasulfide bridges were synthesised by co‐condensation between bis[3‐(triethoxysilyl)propyl]tetrasulfide and either tetraethyl orthosilicate or 1,4‐bis(triethoxysilyl)benzene under acidic conditions in the presence of Brij‐76 as a structure‐directing agent. They post‐modified treatment H 2 O for 3 h 24 h. A progressive loss mesostructure resulting was observed upon increasing S content synthesis mixtures. Thus, only those samples lowest could be considered...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhysicochemical properties of chlorine oxides. 1. Composition, ultraviolet spectrum, and kinetics the thermolysis gaseous dichlorine hexoxideMaria I. Lopez Juan E. SicreCite this: J. Phys. Chem. 1990, 94, 9, 3860–3863Publication Date (Print):May 1, 1990Publication History Published online1 May 2002Published inissue 1 1990https://pubs.acs.org/doi/10.1021/j100372a094https://doi.org/10.1021/j100372a094research-articleACS PublicationsRequest reuse...
A periodic mesoporous organosilica (PMO) functionalized with sulfur units between the organic bridges has been successfully synthesized by a postsynthetic cold vulcanization treatment performed on an ethenylene-bridged PMO material (ethene-PMO). The results of X-ray powder diffraction (XRD), transmission electron microscopy (TEM), and nitrogen adsorption/desorption porosimetry show that resultant materials have well-ordered hexagonal structures narrow pore size distributions. Moreover, 13C...
ADVERTISEMENT RETURN TO ISSUEPREVArticleUltraviolet spectrum of chlorine perchlorateM. I. Lopez and J. E. SicreCite this: Phys. Chem. 1988, 92, 2, 563–564Publication Date (Print):January 1, 1988Publication History Published online1 May 2002Published inissue 1 January 1988https://pubs.acs.org/doi/10.1021/j100313a062https://doi.org/10.1021/j100313a062research-articleACS PublicationsRequest reuse permissionsArticle Views98Altmetric-Citations13LEARN ABOUT THESE METRICSArticle Views are the...
This work describes the synthesis of thiol-functionalized periodic mesoporous organosilicas (PMOs) prepared using precursor 1-thiol-1,2-bis(triethoxysilyl)ethane, alone or mixed with 1,2-bis(triethoxysilyl)ethane. The thiol groups incorporated into structure were found to be efficient for palladium binding. has allowed these materials used as catalysts in Suzuki cross-coupling reaction bromobenzene and phenylboronic acid. Their performance been compared palladium-supported (organo)silicas...
The adsorption of<italic>S</italic>-metolachlor on (organo)silicas largely depends their composition and textural properties. Periodic mesoporous benzenesilica was particularly efficient for repetitive cycles.