Listar QUIO_Articles por fecha de publicación
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Supramolecular hydrogels for enzymatically triggered self-immolative drug delivery
Elsevier (2010)For the first time the combination of self-immolative spacers and supramolecular hydrogels has been tested in enzyme triggered drug release. Low-molecular weight drug-gelator conjugates have been prepared, which contain a ... -
Synthetic application of photoactive porous monolithic polymers
Elsevier (2010)The oxidation of 2-furoic acid to 5-hydroxy-5H-furan-2-one has been accomplished in quantitative yield in chloroform using a novel supported photocatalyst. This material comprises Rose Bengal grafted to the surface of a ... -
Ratiometric fluorescence sensing of phenylalanine derivatives by synthetic macrocyclic receptors
Elsevier (2010)The supramolecular analytical behavior of eight pseudopeptidic fluorescent receptors (1a-c, 2a-c, 3, 4) has been studied. The receptors are either macrocyclic or open chain derivatives based on the naphthalene chromophore. ... -
Use of granite sludge wastes for the production of coloured cement-based mortars
Elsevier (2010)The value of granite sludge wastes (GS) in cement-based mortar formulations was examined by assessing their potential as structural components and pigments. Full characterization of GS was accomplished by X-ray fluorescence ... -
Pd catalysts immobilized onto gel-supported ionic liquid-like phases (g-SILLPs): A remarkable effect of the nature of the support
Elsevier (2010)New polymeric materials containing functional sites analogous to ionic liquids have been synthesized. Those materials are a supported reservoir for the active Pd species. Their catalytic activity has been evaluated for the ... -
In situ synthesis of orange rutile ceramic pigments by non-conventional methods
Elsevier (2010)Different precursor-mixtures of orange Cr,Sb-TiO<sub>2</sub> ceramic pigment have been obtained by non-conventional methods (heterogeneous ammonia coprecipitation, urea homogeneous coprecipitation, PECHINI polyester method ... -
Nuevo sistema y metodología para la eliminación de los calibres en el proceso de fabricación de baldosas cerámicas
Sociedad Española de Cerámica y Vidrio (2010)MACER, S.L, in collaboration with the Institute of Ceramic Technology, has developed a comprehensive control system of the pressing operation called CALIBREUNICO® which keeps constant in time the bulk density of all the ... -
New chromium-calcium titanate red ceramic pigment
Trans Tech Publications (2010)Synthesis and characterization of a new chromium- calcium titanate red ceramic pigment is described in this communication. The pigment is based on the solid solution of chromium (IV) in calcium titanate and was characterized ... -
Field enhanced bulk conductivity of acceptor-doped BaTi1−xCaxO3−x ceramics
American Institute of Physics (2010)The electrical properties of Ca-doped BaTiO3 are very different when Ca substitutes onto Ba or Ti sites. The p-type semiconductivity of Ti-substituted ceramics increases reversibly by one to two orders of magnitude under ... -
Stereoselective Synthesis of the Cytotoxic 14-Membered Macrolide Aspergillide A
American Chemical Society (2010)A stereoselective synthesis of the cytotoxic 14-membered macrolide aspergillide A has been performed. The preparation of a cis-2,6-disubstituted tetrahydropyran ring via stereoselective reduction of an intermediate cyclic ... -
Field enhanced bulk conductivity of BaTiO3 : Mg ceramics
Royal Society of Chemistry (2010)The electrical conductivity of ceramics of composition Ba(Ti1−xMgx)O3−x: 0.00003 ≤ x ≤ 0.01 increases with time on application of a small dc bias voltage in the range 1 to 50 V cm−1 and at temperatures in the range 200 to ... -
Stereoisomerization of β-Hydroxy-α-sulfenyl-γ-butyrolactones Controlled by Two Concomitant 1,4-Type Nonbonded Sulfur−Oxygen Interactions As Analyzed by X-ray Crystallography
American Chemical Society (2010)We have synthesized nine β-hydroxy-α-sulfenyl-γ-butyrolactones having different substituents. The syn-anti or syn-syn lactones (or any mixture of both) invariably isomerized into syn-anti/syn-syn lactones in a ratio of ... -
Thermal study of the Ce0.9Tb0.1O2 pigment prepared by different synthesis
Springer Netherlands (2010)The inorganic ceramic compounds based on the CeO2 belong into the group of high-temperature pigments. The pigments have been prepared by the classical dry process (i.e. solid-state reaction) in the temperature range from ... -
Preparation of Cp-Functionalized N-Heterocyclic Carbene Complexes of Ruthenium. Resolution of Chiral Complexes and Catalytic Studies
American Chemical Society (2010)A series of piano-stool ruthenium(II) complexes bearing bidentate cyclopentadienyl-functionalized N-heterocyclic carbene ligands Ru(CpX-NHC)(CO)I [Cp = tetramethylcyclopentadienyl (Cp*) and tetrabenzylcyclopentadienyl ... -
Supramolecular gels as active media for organic reactions and catalysis
Royal Society of Chemistry (2010)Supramolecular gels have attracted an enormous amount of interest from scientists in the last decade because of their potential applications proposed up to now in fields of great social impact like biomedicine or materials ... -
Sulfonate-Functionalized NHC-Based Ruthenium Catalysts for the Isomerization of Allylic Alcohols in Water. Recyclability Studies
American Chemical Society (2010)Two new complexes of the type [Ru(CO3)(η6-arene)(NHC)]Cs, in which the NHC ligand incorporates a sulfonate functionality, have been prepared and fully characterized. The two water-soluble complexes have been tested in the ... -
A New Approach to the Reduction of Carbon Dioxide: CO2 Reduction to Formate by Transfer Hydrogenation in iPrOH
American Chemical Society (2010)A series of four Ir and Ru catalysts have been tested in the reduction of CO2 to formate in the presence of H2. The iridium catalysts containing the basic NHC ligands were the ones to show better catalytic activities, ... -
Supramolecular Catalysis with Extended Aggregates and Gels: Inversion of Stereoselectivity Caused by Self-Assembly
Wiley-VCH (2010)L-Proline-L-valine dipeptide derivatives, which self-assemble in toluene, have been studied as stereoselective catalysts in the conjugate addition of cyclohexanone to trans-β-nitrostyrene. Remarkable effects on the ... -
Molecular recognition of N-protected dipeptides by pseudopeptidic macrocycles: a comparative study of the supramolecular complexes by ESI-MS and NMR
Royal Society of Chemistry (2010)The molecular recognition properties of pseudopeptidic macrocycles have been studied by ESI-MS and NMR spectroscopy, as highly complementary experimental techniques in solution and in the gas phase. We used ESI-MS competition ... -
Selective catechol-triggered supramolecular gel disassembly
Royal Society of Chemistry (2010)Supramolecular gels formed by an isonicotinic acid derivative in toluene are selectively disassembled in the presence of catechol. The results represent a unique example of molecular recognition associated to gel rupture ...