Listar QFA_Articles por título
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C3-symmetry Mo3S4 aminophosphino clusters combining three sources of stereogenicity: stereocontrol directed by hydrogen bond interactions and ligand configuration
Royal Society of Chemistry (2016)A diastereoselective synthesis of proline containing aminophosphino cubane-type Mo3S4 clusters, (P)-[Mo3S4Cl3((1S,2R)-PPro)3]Cl ((P)-[Mo-(SN,RC)]Cl) and (P)-[Mo3S4Cl3((1S,2S)-PPro)3]Cl ((P)-[Mo-(SN,SC)] Cl), has been ... -
Capabilities of microbore columns coupled to inductively coupled plasma mass spectrometry in speciation of arsenic and selenium
Elsevier (2008)The performance of microHPLC-microconcentric nebulizer-inductively coupled plasma-mass spectrometry (ICP-MS) coupling for the simultaneous determination of As(III), As(V), monomethylarsenic acid (MMA), dimethylarsinic acid ... -
Capillary electrophoresis determination of antihistamines in serum and pharmaceuticals
Elsevier (2010)A capillary electrophoresis (CE) procedure combined with UV detection has proved useful for the quantification of the most frequently prescribed antihistamines corresponding to the ethylendiamine, ethanolamine, propylamine, ... -
Carbon Black CB-EDA Nanoparticles in Macrophages: Changes in the Oxidative Stress Pathway and in Apoptosis Signaling
MDPI (2023-06)The influence of black carbon nanoparticles on J774.A1 murine cells was investigated with the objective of exploring the cytotoxicity of black carbon functionalized with ethylenediamine CB-EDA. The results showed that ... -
Carbon Nanofibers versus Silver Nanoparticles: Time-Dependent Cytotoxicity, Proliferation, and Gene Expression
MDPI (2021-09-03)Carbon nanofibers (CNFs) are one-dimensional nanomaterials with excellent physical and broad-spectrum antimicrobial properties characterized by a low risk of antimicrobial resistance. Silver nanoparticles (AgNPs) are ... -
CaSO4 and its pressure-induced phase transitions. A density functional theory study
American Chemical Society (2012-02)Theoretical investigations concerning possible calcium sulfate, CaSO4, high-pressure polymorphs have been carried out. Total-energy calculations and geometry optimizations have been performed by using density functional ... -
Catalytic Hydrogenation of Azobenzene in the Presence of a Cuboidal Mo3S4 Cluster via an Uncommon Sulfur-Based H2 Activation Mechanism
American Chemical Society (2021)Azobenzene hydrogenation is catalyzed under moderate conditions by a cuboidal Mo3(μ3-S)(μ-S)3 diamino complex via a cluster catalysis mechanism. Dihydrogen activation by the molecular [Mo3(μ3-S)(μ-S)3Cl3(dmen)3]+ cluster ... -
Caught in Action: X-ray Structure of Thymidylate Synthase with Noncovalent Intermediate Analog
American Chemical Society (2021-04-08)Methylation of 2-deoxyuridine-5′-monophosphate (dUMP) at the C5 position by the obligate dimeric thymidylate synthase (TSase) in the sole de novo biosynthetic pathway to thymidine 5′-monophosphate (dTMP) proceeds by forming ... -
CdSe/CdS/CdTe Core/Barrier/Crown Nanoplatelets: Synthesis, Optoelectronic Properties, and Multiphoton Fluorescence Upconversion
American Chemical Society (2020-04-10)Colloidal two-dimensional (2D) nanoplatelet heterostructures are particularly interesting as they combine strong confinement of excitons in 2D materials with a wide range of possible semiconductor junctions due to a ... -
Ceramic Enamels as New Back Contacts for Cu (In, Ga) Se2-Based Photovoltaic Tile
Wiley (2015-02)In this work, we investigated the properties of silver and gold enamels as potential back contacts for Cu (In, Ga) Se2 (CIGS) solar cells. The enamels were deposited on ceramic tiles by nonvacuum printing techniques. Thus, ... -
Changing spin and orbital ground state symmetries in colloidal nanoplatelets with magnetic fields
Wiley (2022-04-01)The symmetry of the electronic ground state is of paramount importance in determining the magnetic, optical and electrical properties of semiconductor nanostructures. Here it is shown theoretically that non-trivial spin ... -
Characteristic molecular properties of one-electron double quantum rings under magnetic fields
Institute of Physics (2008)The molecular states of conduction electrons in laterally coupled quantum rings are investigated theoretically. The states are shown to have a distinct magnetic field dependence, which gives rise to periodic fluctuations ... -
Characterization of a recently detected halogenated aminorex derivative: para-fluoro-4-methylaminorex (4′F-4-MAR)
Nature Research (2019)Despite the fact that 33% of the new psychoactive substances seized in 2015 were synthetic cathinones, the number of these derivatives has been decreasing in the last years, probably as a consequence of the unfavourable ... -
Characterization of commercial synthetic resins by pyrolysis-gas chromatography/mass spectrometry : application to modern art and conservation
American Chemical Society (2009-04-15)To characterize a set of synthetic resins, a methodology by pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) has been developed. The studied reference materials were commercial versions of a wide range of synthetic ... -
Characterization of the Salinisation Processes in Aquifers Using Boron Isotopes; Application to South-Eastern Spain
Springer Netherlands (2008)Use of δ11B provides a solid tool for discriminating hydrogeochemical processes in complex coastal aquifers. Its efficiency increases markedly when it is applied along with other major or minor constituents. Nevertheless, ... -
Characterization of the TiSiO4 structure and its pressure-induced phase transformations: density functional theory study
American Physical Society (2009)Theoretical investigations concerning the possible titanium silicate polymorphs have been performed using density functional theory at B3LYP level. Total-energy calculations and geometry optimizations have been carried ... -
Charge control in laterally coupled double quantum dots
American Physical Society (2011-07-27)We investigate the electronic and optical properties of InAs double quantum dots grown on GaAs (001) and laterally aligned along the [110] crystal direction. The emission spectrum has been investigated as a function of a ... -
Chemi-Structural Stabilization of Formamidinium Lead Iodide Perovskite by Using Embedded Quantum Dots
American Chemical Society (2020-01-6)The approaches to stabilize the perovskite structure of formamidinium lead iodide (FAPI) commonly result in a blue shift of the band gap, which limits the maximum photoconversion efficiency. Here, we report the use of PbS ... -
Chemical Bond Formation and Rupture Processes: An Application of DFT-Chemical Pressure Approach
American Chemical Society (2018-08)Very recently, we have analyzed the nature of chemical interactions in a wide variety of molecules and materials using the chemical pressure (CP) approach. We have shown how this newly developed formalism can be used to ... -
Chemical Ligation and Isotope Labeling to Locate Dynamic Effects during Catalysis by Dihydrofolate Reductase
Wiley (2015-07-27)Experimental and computational approaches have long been employed to define the role of protein motions in en- zyme catalysis, but a refined experimental method for locating the origin of dynamic effects has not previously ...