Listar QUIO_Articles por título
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Dual setereocontrolled alkylation of aldehydes with polystyrene-supported nickel complexes derived from a-amino amides
Royal Society of Chemistry (2015-01)Nickel(II) complexes derived from α-amino amide ligands anchored to gel-type and monolithic polymers act as efficient catalysts for the enantioselective addition of dialkylzinc reagents to aldehydes. Similar to the analogous ... -
Dynamic Kinetic Asymmetric Ring-Opening/Reductive Amination Sequence of Racemic Nitroepoxides with Chiral Amines: Enantioselective Synthesis of Chiral Vicinal Diamines
American Chemical Society (2013-05)We report a highly diastereoselective synthesis of vicinal diamines by the treatment of nitroepoxides with primary amines and then a reducing agent. When using a chiral primary amine, racemic nitroepoxides are transformed ... -
Dynamic Peptide Library for the Discovery of Charge Transfer Hydrogels
ACS Publications (2015)Coupling of peptide self-assembly to dynamic sequence exchange provides a useful approach for the discovery of self-assembling materials. In here, we demonstrate the discovery and optimization of aqueous, gel-phase ... -
Easy and low-cost aqueous precipitation method to obtain Cu2ZnSn(S, Se)4 thin layers
Elsevier (2017)An easy method to obtain kesterite Cu2ZnSn(Se1-x,Sx)4 (CZTSSe) solid solution as an absorber for thin film photovoltaic solar cells is discussed in this report. Particular emphasis is directed toward the procedure´s steps ... -
Ecofriendly High NIR Reflectance Ceramic Pigments Based on Rare Earths Compared with Classical Chromophores Prepared by DPC Method
MDPI (2022-09-20)A high NIR reflectance ceramic pigments palette based on rare earths except black (La,Li-SrCuSi4O10 blue wesselsite, Pr-CeO2 red-brown cerianite, Mo-Y2Ce2O7 yellow cerate, Sr4Mn2CuO9 black hexagonal perovskite) was compared ... -
Ecologic ceramic substrates for CIGS solar cells
Elsevier (2016)In this work the use of porcelain stoneware tiles as alternative substrates for CIGS thin film solar cells for the development of specific applications as those related to building integration (BIPV, BAPV) are reported. ... -
Ecopigmentos cerámicos verdes y amarillos de Pr2Mo2O9 dopados con calcio obtenidos en presencia de mineralizadores y por coprecipitación química
Sociedad Española de Cerámica y Vidrio (2011)In this paper the synthesis of (Pr2-xCax)Mo2O9 solid solutions by ceramic route is presented. Crystallography and colour evolution from green to yellow described on literature have been checked. When enamelled in a lead ... -
Educación cooperativa en Química Verde: la experiencia española
Universidad Nacional Autónoma de México. Facultad de Química (2013)A common postgraduate training in Green Chemistry is currently being carried out by several Spanish universities. This initiative considers the corresponding Máster and PhD programs in Sustainable Chemistry and has been ... -
Educational Videogame to Learn the Periodic Table: Design Rationale and Lessons Learned
American Chemical Society (2021-06-08)The periodic table allows students to easily understand the chemical elements and predict the behavior of theoretical yet undiscovered new elements. Many memorization techniques have been used for learning the periodic ... -
Effect of Al, Ga, and In Doping on the Optical, Structural, and Electric Properties of ZnO Thin Films
MDPI (2021-11-01)ZnO thin films with oxygen vacancies and doped with Al, Ga, and In (Zn1-xMxO1−y (x = 0.03)) have been successfully deposited on soda-lime glass substrates using a simple soft chemical method. The crystalline structure shows ... -
Effect of alkali doping on CIGS photovoltaic ceramic tiles
Elsevier (2017)This report studies the influence of alkali elements (Na, K) to morphological, structural and optoelectronic properties of CIGS ceramic tile solar cell. Several ceramic enamels with altered chemical composition in terms ... -
Effect of Fluxing Additives in Iron-rich Frits and Glazes in the Fe2O3–SiO2–CaO–Al2O3 System
Expert Fachmedien GmbH (2013)Glasses in the Fe2O3–SiO2–CaO system are potential candidates for many technological applications due to their ferrimagnetic and semiconductive properties, which have been extensively studied; in this sense, the effect of ... -
Effect of Hyaluronic Acid on the Self-Assembly of a Dipeptide-Based Supramolecular Gel
Wiley (2023-10-02)The combination of polymers and low molecular weight (LMW) compounds is a powerful approach to prepare new supramolecular materials. Here we prepare two-component hydrogels made by a well-known and biologically active ... -
Effect of Pr on the electrical and chemical properties of cerium oxide prepared by combustion method
American Ceramic Society (2019-05)Nanoparticles of Ce1−xPrxO2 (X: 0.6 and 0.8), were synthesized by the combustion method using citric acid as chelating and fuel agent. The X‐ray diffraction patterns and Rietveld refinements confirm that samples shown ... -
Effect of the Cα substitution on the ketonic decarboxylation of carboxylic acids over m-ZrO2: the role of entropy
Royal Society of Chemistry (2016)The kinetics of the ketonic decarboxylation of linear and branched carboxylic acids over m-ZrO2 as a catalyst has been investigated. The same apparent activation energy is experimentally determined for the ketonic deca ... -
Effect of the oxidation states on the electrical properties of Fe-doped Pr2Zr2O7 pyrochlore
Elsevier (2022-01-01)Pyrochlores with formula Pr2Zr2-xFexO7±d (x ¼ 0.00, 0.05, 0.10 and 0.15) were synthesized by the coprecipitation method. Pellets of these compositions sintered at 1400 C for 12 h were characterized by XRD, Rietveld ... -
Effects of Curcuminoid Pyrazoles on Cancer Cells and on the Expression of Telomerase Related Genes
Wiley (2016-07)A group of 13 curcuminoid pyrazoles was investigated for their cytotoxicity on three tumoral cell lines (HT-29, MCF-7, and HeLa) and one non-tumoral human cell line (HEK-293). The values obtained were compared with those ... -
Effects of gemini amphiphilic pseudopeptides on model lipid membranes: A Langmuir monolayer study
Elsevier (2013-02-01)Monolayers formed with 1,2-dimyristoyl-sn-glycero-3-phosphoethanolamine, 1,2-dipalmitoyl-sn-glycero-3-phosphoethanolamine, 1,2-dimyristoyl-sn-glycero-3-[phospho-rac-(1-glycerol)] and 1,2-dipalmitoyl-sn-glycero-3-[phospho ... -
Effects on tubulin polymerization and down-regulation of c-Myc, hTERT and VEGF genes by colchicine haloacetyl and haloaroyl derivatives
Elsevier (2018-04-25)Several colchicine analogues in which the N-acetyl residue has been replaced by haloacetyl, cyclohexylacetyl, phenylacetyl and various aroyl moieties have been synthesized. The cytotoxic activities of the synthesized ...