Listar Departament: Química Inorgànica i Orgànica por fecha de publicación
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Phase transition hysteresis and anomalous Curie-Weis behavior of ferroelectric tetragonaltungsten bronzes Ba2RETi2Nb3O15:RE=Nd, Sm
American Institute of Physics (2008)The ferroelectric tetragonal tungsten bronze TTB phases, Ba2RETi2Nb3O15 :RE=Nd,Sm, were prepared by low temperature solvothermal synthesis. The permittivity versus temperature data of sintered ceramics show two unusual ... -
Lanthanide doped ZnS quantum dots dispersed in silica glasses: an easy one pot sol–gel synthesis for obtaining novel photonic materials
Royal Society of Chemistry (2008)Silica glasses containing both ZnS quantum dots (QDs) and luminescent lanthanide ions are attractive candidates to develop new lighting displays, sensor devices or laser emitters. This work reports an easy sol–gel method ... -
Molecular recognition through divalent interactions with a self-assembled fibrillar network of a supramolecular organogel
Royal Society of Chemistry (2008)The interaction of phenol derivatives with the self-assembled fibrillar network of two different supramolecular gels has been studied. NMR relaxometry reveals the selective interaction of resorcinol over other related ... -
Alkenyl-functionalized NHC iridium-based catalysts for hydrosilylation
Royal Society of Chemistry (2008)A family of alkenyl-functionalized N-heterocyclic-carbene–iridium(I) complexes has been synthesized, providing a series of mono-coordinated, bis-chelate and pincer alkenyl-NHC species. Olefin coordination is highly ... -
Biomimetic self-assembly of tetrapeptides into fibrillar networks and organogels
WILEY-VCH (2008)The self-assembly features of a family of tetrapeptides inspired in silk structure are presented. An exhaustive study of the influence of the terminal alkyl chain length in this process is undertaken. Scanning electron ... -
Designed folding of pseudopeptides: the transformation of a configurationally driven preorganization into a stereoselective multicomponent macrocyclization
VCH Verlagsgesellschaf (2008)The efficient synthesis of large-ring pseudopeptidic macrocycles through a multicomponent [2+2] reductive amination reaction is described. The reaction was entirely governed by the structural information contained in the ... -
Photonic and Nanobiophotonic Properties of Luminescent Lanthanide-Doped Hybrid Organic-Inorganic Materials
Royal Society of Chemistry (2008)Research into lanthanide-doped organic–inorganic hybrid materials emerged in the 1990s with the development of interesting materials for optics: high efficiency and stable solid-state lasers, new fiber amplifiers and ... -
Base Supported Ionic Liquid-Like Phases as catalysts for the Batch and Continuous-Flow Henry Reaction
Royal Society of Chemistry (2008)New solid basic catalysts immobilised onto supported ionic liquid-like phases have been prepared, having suitable mechanical stability for their use for the continuous-flow Henry reaction -
Aldol Reactions between L-Erythrulose Derivatives and Chiral α-Amino and α -Fluoro Aldehydes: Competition between Felkin–Anh and Cornforth Transition States
Wiley-Blackwell (2008)Both matched and mismatched diastereoselection have been observed in aldol reactions of a boron enolate of a protected l-erythrulose derivative with several chiral α-fluoro and α-Amino aldehydes. Strict adherence to the ... -
Core-shell effects of functionalizes oxide nanoparticles inside long-range meso-ordered spray-dried silica spheres according to the templating agent in use
Springer Verlag (2008)Core-shell and homogeneous distributions of functionalized cerium oxide nanoparticles within spraydried mesostructured silica spheres are achieved by modification of synthesis parameters such as the templating agent and ... -
Sol-gel synthesis of tunable cerium titanate materials
ChemPubSoc Europe (2008)Cerium titanate structures present a high technological interest because of their optical and catalytic properties. This work reports the synthesis of these materials by a sol-gel methodology which allows to obtain mixed ... -
Influence of treatment conditions on chalcopyrite films deposited at atmospheric pressure
Wiley-Blackwell (2008)Spin‐coating technique was used to deposit precursor layers for chalcopyrite films of the series CuInX2 and Cu(In,Ga)X2 where X = S or Se or (S,Se). The influence of different parameters of the process, such as solution ... -
High-Tech Applications of Self-Assembling Supramolecular Nanostructured Gel-Phase Materials: From Regenerative Medicine to Electronic Devices
John Wiley & Sons (2008)It is likely that nanofabrication will underpin many technologies in the 21st century. Synthetic chemistry is a powerful approach to generate molecular structures that are capable of assembling into functional nanoscale ... -
Short, Stereoselective Synthesis of the Naturally Occurring Pyrrolidine Radicamine B and a Formal Synthesis of Nectrisine
American Chemical Society (2008)A short, stereoselective synthesis of the naturally occurring pyrrolidine radicamine B is reported. Garner′s (R)-aldehyde, prepared from d-serine, was the chiral starting material. The pyrrolidine ring was stereoselectively ... -
Polymorphism and Dielectric Properties of Nb-Doped BaTiO3
Wiley (2008-01)A working subsolidus phase diagram for the system BaTiO3–Ba5Nb4O15 has been determined by firing sol–gel-synthesized samples over a range of temperatures. The main difference from previous diagrams is the greater extent ... -
Desarrollo de esmaltes vitrocerámicos con propiedades antideslizantes para baldosas de gres porcelánico
Qualicer (2008-02-10)La resistencia al deslizamiento es una prestación mecánica que se debe evaluar dentro de la selección de un pavimento cerámico, teniendo siempre en cuenta la aplicación a la cual será destinado. El aumento en el empleo ... -
An Unusual Example of Base-Free Catalyzed Reduction of C═O and C═NR Bonds by Transfer Hydrogenation and Some Useful Implications
American Chemical Society (2008-03)A series of Cp*IrIII(NHC) complexes have been used in the catalytic transfer hydrogenation of ketones and imines in iPrOH, showing that the reduction of ketones is complete within minutes at room temperature, with the ... -
Polymorphism of BaTiO3 Acceptor Doped with Mn3+, Fe3+, and Ti3+
Wiley (2008-07)The effect of Mn doping on the cubic to hexagonal phase transition temperature in BaTiO3 has been determined by quenching samples with different Mn contents from a range of temperatures. Under conditions of equilibrating ... -
Stereoselective synthesis of the naturally occurring 2-pyranone dodoneine
Wiley-VCH (2008-08)The first total synthesis of the naturally occurring dihydropyranone dodoneine is reported. Asymmetric allylations were used for the stereoselective generation of the two stereogenic centers. The pyranone ring was created ... -
Cp*Ir(NHC) complexes as highly versatile and efficient catalysts for the cross-coupling of alcohols and amines
Wiley-VCH (2008-11-19)A comparative study on the catalytic activity of a series of Cp*Ir(NHC)Cl2 complexes in several C-O and C-N coupling processes implying hydrogen-borrowing mechanisms has been performed. The compound Cp*Ir(InBu)Cl2 (InBu ...