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Your search keyword '"UNESCO::QUÍMICA"' showing total 5 results
Start Over Descriptor "UNESCO::QUÍMICA" Journal chem. commun.
5 results on '"UNESCO::QUÍMICA"'

1. Solution processable phosphorescent dendrimers based on cyclic phosphazenes for use in organic light emitting diodes (OLEDs)

Author

Sundarraj Sudhakar, Alan Sellinger, Henk J. Bolink, Changgua Zhen, and Sonsoles Garcia Santamaria

Subjects
Materials science, UNESCO::QUÍMICA, QUÍMICA [UNESCO], Catalysis, law.invention, chemistry.chemical_compound, law, Dendrimer, Materials Chemistry, OLED, Phosphorescence, Organic light, Phosphazene, business.industry, UNESCO::QUÍMICA::Química analítica, Metals and Alloys, General Chemistry, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, chemistry, QUÍMICA::Química analítica [UNESCO], Ceramics and Composites, Optoelectronics, Phosphorescent organic light-emitting diode, business
Abstract

A novel solution processable phosphorescent dendrimer based on cyclic phosphazene (CP) cores has been prepared and used as emissive layers in simple OLED architectures, providing efficiencies of 24.0 cd A^-1 and 16.7 lm W^-1. Bolink, Henk, Henk.Bolink@uv.es ; Garcia Santamaria, Sonsoles Amor, Sonsoles.Garcia@uv.es

Published
2008
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2. A chirality-induced alpha phase and a novel molecular magnetic metal in the BEDT-TTF/tris(croconate)ferrate(<scp>iii</scp>) hybrid molecular system

Author

Eugenio Coronado, Christophe Faulmann, Enric Canadell, Carlos J. Gómez-García, Angela Serpe, Luca Pilia, Maria Laura Mercuri, Carlos Giménez-Saiz, Simona Curreli, and Paola Deplano

Subjects
Models, Molecular, Magnetic metal, UNESCO::QUÍMICA, Iron, Inorganic chemistry, Molecular Conformation, Cyclopentanes, Crystallography, X-Ray, Ferric Compounds, QUÍMICA [UNESCO], Catalysis, Ion, Metal, Magnetics, Paramagnetism, chemistry.chemical_compound, Phase (matter), Materials Chemistry, Molecule, Sulfhydryl Compounds, Novel, Organic, Molecular Structure, Chemistry, UNESCO::QUÍMICA::Química analítica, Temperature, Metals and Alloys, General Chemistry, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Paramagnetic, Crystallography, visual_art, Yield (chemistry), QUÍMICA::Química analítica [UNESCO], Ceramics and Composites, visual_art.visual_art_medium, Chirality (chemistry), Tetrathiafulvalene
Abstract

The novel paramagnetic and chiral anion [Fe(C5O5)3]32 has been combined with the organic donor BEDT-TTF (= ET = bis(ethylenedithio)tetrathiafulvalene) to yield the first chirality- induced α phase and a paramagnetic metal. Gomez Garcia, Carlos, Carlos.Gomez@uv.es ; Coronado Miralles, Eugenio, Eugenio.Coronado@uv.es ; Gimenez Saiz, Carlos, Carlos.Gimenez@uv.es

Published
2006
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3. Synergistic assembly of hyperbranched polyethylenimine and fatty acids leading to unusual supramolecular nanocapsules

Author

Yu Chen, Zhong Shen, Salah-Eddine Stiriba, Holger Frey, and Julia Pérez-Prieto

Subjects
Macromolecular Substances, UNESCO::QUÍMICA, Assembly, Hiperbranched polyethylenimine, Spramolecular, Water-soluble, Organic solvents, Supramolecular chemistry, macromolecular substances, QUÍMICA [UNESCO], Catalysis, Nanocapsules, chemistry.chemical_compound, Polymer chemistry, Materials Chemistry, Polyethyleneimine, Molecule, Polyethylenimine, Nanotubes, Molecular Structure, Fatty Acids, technology, industry, and agriculture, Metals and Alloys, Water, General Chemistry, UNESCO::QUÍMICA::Química macromolecular, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Models, Chemical, chemistry, Solvents, Ceramics and Composites, QUÍMICA::Química macromolecular [UNESCO], lipids (amino acids, peptides, and proteins)
Abstract

Self-assembly of hyperbranched polyethylenimine (PEI) and fatty acids leads to supramolecular inverted micellar structures that are able to irreversibly transfer water-soluble guest molecules into organic solvents. Perez Prieto, Julia, Julia.Perez@uv.es ; Stiriba, Salah Eddine, Salah.Stiriba@uv.es

Published
2005
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4. A novel high-spin heterometallic Ni12K4cluster incorporating large Ni–azide circles and an in situ cyanomethylated di-2-pyridyl ketone

Author

Xiao-Ming Chen, Susumu Kitagawa, Masaaki Ohba, Juan Modesto Clemente Juan, Ming-Liang Tong, Montserrat Monfort, and Xian He Bu

Subjects
In situ, Potassium tert-butylate, Ketone, Base (chemistry), UNESCO::QUÍMICA, Potassium, chemistry.chemical_element, Cyanomethylation of ketone, QUÍMICA [UNESCO], Ferromagnetically-coupled Mll-azide, Catalysis, chemistry.chemical_compound, Polymer chemistry, Materials Chemistry, Cluster (physics), Organic chemistry, Spin (physics), Novel, chemistry.chemical_classification, UNESCO::QUÍMICA::Química inorgánica, Metals and Alloys, Nickel acetate, General Chemistry, QUÍMICA::Química inorgánica [UNESCO], Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, chemistry, Ceramics and Composites, Azide
Abstract

Reaction of di-2-pyridyl ketone (dpk) with nickel acetate and azide in the presence of potassium tert-butylate as a catalytic base generates the title compound, which contains the largest [Ni(m1,1-N3)]6 circles in the discrete ferromagnetically-coupled MII–azide cluster family, and shows an unprecedented in situ cyanomethylation of ketone. Clemente Juan, Juan Modesto, Juan.M.Clemente@uv.es

Published
2005
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5. The selective oxidative dehydrogenation of ethane over hydrothermally synthesised MoVTeNb catalysts

Author

Ana Dejoz, P. Botella, M.I. Vázquez, and J.M. López Nieto

Subjects
UNESCO::QUÍMICA, Oxide, Oxidative phosphorylation, QUÍMICA [UNESCO], Catalysis, Metal, chemistry.chemical_compound, Materials Chemistry, Hydrothermal synthesis, Organic chemistry, High activity, Dehydrogenation, Ethane, Catalysts, UNESCO::QUÍMICA::Química inorgánica, Chemistry, Metals and Alloys, General Chemistry, QUÍMICA::Química inorgánica [UNESCO], Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Oxidative dehydrogenation, visual_art, Ceramics and Composites, visual_art.visual_art_medium, Selectivity
Abstract

Mo–V–Te–Nb metal oxide catalysts prepared by hydrothermal synthesis and heat-treated in N2 at high temperatures (600–700 °C) show high activity and selectivity for the oxidative dehydrogenation of ethane to ethene. Yields of ethene of 75% have been obtained at 400 °C on the best catalysts. Dejoz Garcia, Ana Maria, Ana.M.Dejoz@uv.es

Published
2002
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