Listar QUIO_Articles por fecha de publicación
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Synthesis and biological properties of the cytotoxic 14-membered macrolides aspergillide A and B
Wiley (2010-11-09)Total, stereoselective syntheses of the naturally occurring, cytotoxic macrolides aspergillide A and B are described. Olefin metatheses and asymmetric allylations were key steps in the synthetic sequences. Cytotoxicity ... -
Stimulus responsive self-assembly of Gemini Amphiphilic Pseudopeptides
Royal Society of Chemistry (2011)Amphiphilic amino acid derived compounds are very interesting for the design of building blocks able to self-assemble into highly ordered nanostructures, in a hierarchical and controlled fashion. With this aim, the modular ... -
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 ... -
Regioselective ring opening and isomerization reactions of 3,4-epoxyesters catalyzed by boron trifluoride
American Chemical Society (2011)Efficient ring opening of 3,4-epoxyesters with alcohols to produce 4-alkoxy-3-hydroxyesters and their isomerization into 4-ketoesters using boron trifluoride as the catalyst are presented. Both transformations are simple ... -
Fluorescence of 1,2-Diaminoanthraquinone and its Nitric Oxide Reaction Product within Macrophage Cells
Wiley-VCH (2011)Nitric oxide (NO) is involved in many biological processes. Aromatic ortho-diamine derivatives are commonly used in the fluorescence imaging of NO in living cells. ortho-diamino (o-diamino) compounds are believed to react ... -
Synthesis, characterization and optical studies on lanthanide-doped CdS quantum dots: new insights on CdS → lanthanide energy transfer mechanisms
RSC (2011)Eu3+-Doped CdS hexagonal nanocrystals (NCs), with an average size of 4 nm, have been prepared through a simple methodology based on the direct precipitation of CdS NCs using 1-thioglycerol as a capping molecule. Steady-state ... -
In-situ laser synthesis of rare earth aluminate coatings in the system Ln-Al-O (Ln = Y, Gd)
Elsevier (2011)Laser zone melting (LZM) was employed in this work to prepare Ln-Al-O coatings on polycrystalline Al2O3 substrates, using the corresponding mixtures of powdered rare-earth oxides and Al2O3 as starting materials. In-situsynthesis ... -
Mesoporous SiO2 thin films containing photoluminescent ZnO nanoparticles and simultaneous SAXS/WAXS/ellipsometry experiments
RSC (2011)We report the formation of ZnO/SiO2 nanocomposite thin films. They are composed of 5 nm sized-wurtzite ZnO nanoparticles nucleated within vitreous SiO2 which was in the form of either an ordered mesoporous or a dense matrix. ... -
Efficient enhancement of copper-pyridineoxazoline catalysts through immobilization and process design
Royal Society of Chemistry (RSC) (2011)Copper-pyridineoxazoline (Cu-pyox) complexes are poor homogeneous catalysts for asymmetric cyclopropanation reactions. Pyox ligands have been immobilized by polymerization of monomers possessing a vinyl group directly ... -
Progress on lanthanide-based organic–inorganic hybrid phosphors
Royal Society of Chemistry (2011)Research on organic–inorganic hybrid materials containing trivalent lanthanide ions (Ln3+) is a very active field that has rapidly shifted in the last couple of years to the development of eco-friendly, versatile and ... -
Photoluminescence of CdSe/ZnS core–shell quantum dots stabilized in water with a pseudopeptidic gemini surfactant
Royal Society of Chemistry (2011)The use of pseudopeptidic gemini surfactants as stabilizers of hydrophobic quantum dots in water is discussed. Compound 1a acts as an intercalator with hydrophobic ligands of QDs transferring them from toluene to pure water ... -
A Simple Route to Chelating, Structurally Different Triazole-Based Bis(N-heterocyclic carbene) Ligands and Their Coordination to PtIl
Wiley (2011-01)Two new bis(triazolium) salts have been prepared and used as N-heterocyclic carbene (NHC) precursors. The structure of the salts is highly dependent on the synthetic route, which implies the sequential alkylation of two ... -
Recent developments in the applications of palladium complexes bearing N-heterocyclic carbene ligands
Bentham Science Publishers (2011-01-09)N-heterocyclic carbene (NHC) ligands have become ubiquitous ligands in the preparation of metal complexes with new catalytic applications. Mainly due to their applications in C-C bond formation reactions, a plethora of ... -
Polymer-supported ionic-liquid-like phases (SILLPs): transferring ionic liquid properties to polymeric matrices
Wiley (2011-01-12)The physico-chemical properties of polymers with ionic-liquid-like moieties covalently bound to their surfaces (SILLPs) have been studied by thermal and spectroscopic techniques, as well as by direct impedance and dielectric ... -
Synthesis and Properties of Chelating N-Heterocyclic Carbene Rhodium(I) Complexes: Synthetic Experiments in Current Organometallic Chemistry.
© 2011 The American Chemical Society and Division of Chemical Education (2011-03)The preparation and characterization of two air-stable Rh(I) complexes bearing a chelating N-heterocyclic carbene (NHC) ligand is described. The synthesis involves the preparation of a Ag(I)-NHC complex and its use as ... -
Solid solutions of mixed metal Mn3−xMgxFe4(PO4)6orthophosphates: colouring performance within a double-firing ceramic glaze
Elsevier (2011-03)Solid solutions of mixed metal Mn3−xMgxFe4(PO4)6 orthophosphates (x = 0, 0.5, 1, 1.5, 2, 2.5, and 3) were prepared for the first time (from coprecipitate powders calcined up to 1000 °C) and characterized by thermal analysis, ... -
Water-soluble IrIII n-heterocyclic carbene based catalysts for the reduction of CO2 to formate by transfer hydrogenation and the deuteration of aryl amines in water
WILEY-VCH Verlag (2011-03-01)Two new water-soluble [IrI2(AcO)(bis-NHC)] complexes (NHC=N-heterocyclic carbene) incorporating a sulfonate functionality have been synthesized. The two complexes have been tested in the reduction of CO2 with H2 and iPrOH, ... -
Enhanced conductivity and nonlinear voltage–current characteristics of nonstoichiometric BaTiO3 ceramics
Wiley-Blackwell (2011-03-21)The electrical conductivity of both BaO-deficient and TiO2-deficient BaTiO3 ceramics shows nonohmic, low-field characteristics at temperatures >∼200°C in contrast to stoichiometric BaTiO3 for which the electrical conductivity ... -
Preparation of polymer-supported gold nanparticles based on resins containing ionic liquid-like fragments:easy control of size and stability
RSC Publishing (2011-03-29)Crosslinked polymers containing covalently attached functional sites with chemical structures related to those present in ILs and having macroscopic properties very similar to the ones of the corresponding bulk ILs can be ... -
5-Hydroxy-5-methylhydantoin DNA lesion, a molecular trap for DNA glycosylases
Oxford University Press (2011-04-12)DNA base-damage recognition in the base excision repair (BER) is a process operating on a wide variety of alkylated, oxidized and degraded bases. DNA glycosylases are the key enzymes which initiate the BER pathway by ...