Supramolecular Catalysis
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. The impressive chemistry, applications and features of ionic liquids: properties, catalysis & catalysts and trends
Algumas das nossas contribuições para o desenvolvimento da área da catálise em líquidos iônicos são descritas. Além disto, o uso de ligantes ionofílicos bem como a utilização de catalisadores com "etiquetas iônicas" são apresentados e discutidos. Devido à importância dos líquidos iônicos, as suas propriedades fisicoquímicas de interesse bem
Journal of the Brazilian Chemical Society. Publicado em: 2012-06
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2. O uso de líquidos iônicos na obtenção de materiais magnéticos nanoestruturados
The properties of these magnetic materials are strongly influenced by the diameter, shape and size distribution of the nanoparticles. Therefore, the search for new magnetic materials and for alternative methods that allow the synthesis of these magnetic nanoparticles with controlled size and shape using modulate fluids and less toxic reactants is still a cha
Publicado em: 2010
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3. New catalysts based on oxovanadium (IV) and cucurbit[6]uril. / Novos catalisadores à base de oxovanádio (IV) e Cucurbit[6]urila
Cucurbiturils are versatile molecules used in several branches of chemistry. These molecular cages form a family of homologues from the condensation of glycoluril and formaldehyde in acidic medium. Their applications range from catalysis, photochemistry, organic and inorganic synthesis, materials and supramolecular chemistry. Particularly cucurbit[6]uril, or
Publicado em: 2009
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4. Catálise oxidativa de clusters de rutênio e porfirinas supramoleculares / Oxidative catalysis of ruthenium clusters and supramolecular porphyrins
A atividade catalítica de clusters trigonais de acetato de rutênio e porfirinas supramoleculares contendo quatro unidades de clusters periféricos ou complexos de bis(bipiridina)rutênio, na oxidação de substratos orgânicos por iodosil-benzeno ou terc-butil-hidroperóxido, é abordada nesta tese. Foram feitos estudos cinéticos para elucidar o mecanismo
Publicado em: 2005
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5. Sintese e caracterização de ferrissilicatos mesoporosos
MCM-41 structured mesoporous ferrisilicates were synthesized by polymerization of sodium silicate over supramolecular arrays of CTABr, used as structure-directing agent. Alternatively, tetramethylammonium silicate was used as source of silicate. The condensation of the silicate was stimulated by decreasing the pH with one of the following acids: hydrofluoric
Publicado em: 2002
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6. Transmembrane pores formed by synthetic p-octiphenyl β-barrels with internal carboxylate clusters: Regulation of ion transport by pH and Mg2+- complexed 8-aminonaphthalene-1,3,6-trisulfonate
Design, synthesis, and study of a synthetic barrel-stave supramolecule with p-octiphenyl “staves,” β-sheet “hoops,” and hydrophobic exterior as well as internal carboxylate clusters are reported. Ion transport experiments indicate the formation of transmembrane pores at 5 < pH < 7 with nanomolar activity. Blockage of dye efflux from spherical bilaye
National Academy of Sciences.
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7. Adenylyl cyclase Rv1625c of Mycobacterium tuberculosis: a progenitor of mammalian adenylyl cyclases
The gene Rv1625c from Mycobacterium tuberculosis encodes a membrane-anchored adenylyl cyclase corresponding to exactly one-half of a mammalian adenylyl cyclase. An engineered, soluble form of Rv1625c was expressed in Escherichia coli. It formed a homodimeric cyclase with two catalytic centers. Amino acid mutations predicted to affect catalysis resulted in in
Oxford University Press.