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Showing 1 to 20 of 35 for “"Ag(I)"”.
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Synthesis and Characterization of a Series of Ag(I) and Cu(I) NHC Bridged Triangular
… NHC-bridged triangular complexes of Ag(I) and Cu(I)were prepared upon reaction of the corresponding ligand precursors, [HSim(CH2py)2]BF4 (1),[HSim(CH2pyCH3)2]BF4 (2), [HSim(CH2pyCl)2]PF6 (3), [HSim(CH2pyBr)2]PF6 (4),[HSim(CH2isoquin)2]PF6 (5), [Him(CH2py-3,4-(OMe)2)2]BF4 (6), …
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Synthesis and Characterisation of Silver(I)-Bioglues and Assessment of Biological Activity of AgNO3 Against Staphylococcus aureus
… prepared in the absence and in the presence of Ag(I) ions (using AgNO3 and [Ag2(3,6,9-tdda)].2H2O (tddaH2 = trioxaundecanedioic acid)) were thermally stable and had the ability to swell in the presence of water. Generally, for the Ag(I)-Bioglues, as the amount of added Ag(I) ions decreased the …
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Synthesis of imidazole schiff base ligands, their silver (I) complexes and their activities against candida albicans
… Schiff base ligands, the formation of their Ag(I) complexes and their evaluation as agents for inhibiting the growth of the fungal pathogen, Candida albicans. The synthesis of some Schiff base ligands proved problematic and the products were characterized using standard IR and NMR …
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Molekulare Architekturen auf Basis von oligofunktionellen Pyridinliganden
… Palladium(II)- und Kupfer(II)-Komplexen. Aussagen zum Phasentransfer und zur Selektivität wurden durch Flüssig-Flüssig-Extraktion und Membrantransportuntersuchungen erhalten. Neue Ligandmoleküle wurden durch die Anknüpfung der chelatisierenden Donorfunktionseinheiten 2,2’-Dipyridylamin bzw. …
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Tripodale Azaliganden - Ambivalente Rezeptoren für Kationen und Anionen
… gegenüber den Kationen Ag(I), Co(II), Ni(II), Cu(II), Zn(II) und Cd(II) sowie den Anionen Cl-, Br-, I-, H2PO4-, SO42- und HCrO4- wurden durch Flüssig-Flüssig-Extraktion und Flüssigmembrantransport, 1H-NMR-Spektroskopie sowie Silberpotentiometrie untersucht; …
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Transition Metal Complexes of Novel Phenanthroline Derivatives and their Antibacterial Activity
… of oxazine-based derivative of phen and its Ag(I), Cu(II) and Mn(II) complexes. The antimicrobial effects of this ligand and its metal complexes were studied using a Gram-positive (Staphylococcus aureus) and Gram-negative (Escherichia coli) bacteria and a fungal (Candida albicans) strain. In …
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Exploration of a template-directed approach for the synthesis of silver nanoparticles
… one-pot synthesis of silver nanoparticles (AgNPs) using Tollens' reagent as a silver source. The project focuses on the preparation of a series of sugar triazole ligands to template the formation of monodisperse AgNPs in a size- and shape-controlled manner. Chapter 1 introduces the optical …
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Compuestos homo y heterometalicos del grupo 11 con ligandos tipo terpiridina: Estudio de propiedades ópticas y biológicas
… poliméricos heterometálicos de Au(I) y Ag(I) con interesantes propiedades fotofisicas. El segundo bloque de estudio en esta tesis consiste en la búsqueda de nuevos complejos homometálicos de Cu(I), Ag(I) y Au(I) con ligandos tipo terpiridina con potenciales aplicaciones como agentes …
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Characterization of Metal Binding Peptides Derived from Copper Trafficking Proteins
… bacteria roughly 2.7 billion years ago. While it proved to be poisonous to early life on Earth, those that met the evolutionary challenge utilized the metal as a cofactor in enzymes to perform biochemically significant functions, while controlling intracellular levels of copper with …
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Synthesis, Characterization and Study of Luminescent Au/Ag and Au/Tl Heterometallic Compounds with Mixed Donor Macrocyclic Derivatives
… de complejos heterometálicos Au(I)/M(I) (M(I)= Ag(I), Tl(I)) con ligandos macrocíclicos y derivados. Asimismo, se ha realizado el estudio experimental de las propiedades ópticas de los nuevos complejos y los cálculos teóricos correspondientes que ayuden a la interpretación del origen de estas …
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Design and Synthesis of Novel Cage-Functionalized Crown Ethers: A New Class of Ag Complexants.
Three different types of cage crown ethers have been prepared and their complexation properties with Ag(I) have been studied. Atomic absorption, fluorescence quenching, and UV absorption have been used to study the interaction between the hosts (cage crown ethers) and guests (Ag+). For the …
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Investigation of factors influencing the d-Aminolevulinic acid dehydratase assay of blood-lead with a specific reference to the in vitro effects of monovalent cations
… cations of Li, Na, K, Cs, NH4, Tl, Hg, and Ag on the pH-activity profile of ALAD from human blood over a seven day period from the date of blood acquisition were investigated and displayed. Several interferences, most notably Hg(II) from HgCl2, were identified and it was found that Cu(I) and …
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Synthese, Elektrochemie und thermisches Verhalten von Metallkomplexen
… Niedertemperaturfügen umfasst die Synthese von Ag(I)-Carboxylaten wie [AgO2CCR2OC(O)OMe] (R = H, Me) und deren Verwendung als Basis-Komponenten in der Entwicklung von Fügepasten. Zur Erzeugung von MgO- und ZnO-Schichten wurden Metall-Dialkoholate des Typs [M(OCHMeCH2NMeCH2)2] (M = Mg, Zn) …
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Compuestos heterometálicos de iones de capa cerrada con ligandos macrocíclicos
… heterometálicos de Au(I)/Cu(I), Au(I)/Ag(I) y Au(I)/Tl(I) frente a ligandos macrocíclicos de diferente naturaleza y capacidad coordinativa ([9]aneS3, [14]aneS4, [24]aneS8, [12]aneS3N-CH2Quinolina y [12]aneS2N2-(CH2Quiniolina)2) da lugar a la obtención de nuevos derivados que, en la …
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The acidic sulfonimidation of aryl–oxazolines and the electrophilic fluorination of aryl–oxazolines
… of arenes. Using NFSI as the fluorinating agent, and a Pd(II), Ag(I) catalytic system, electrophilic C(sp2–H) ortho–fluorination took place on a variety of aryl substrates to afford the corresponding mono and di–fluorinated products. The oxazoline directing group was then hydrolyzed …
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Efeito in vitro dos ácidos glutárico e 3-hidroxiglutárico sobre alguns parâmetros do sistema glutamatérgico em córtex cerebral de ratos e em astrócitos cultivados de córtex de ratos
A acidemia glutárica tipo I (AG I) é um erro inato do metabolismo de herança autossômica recessiva que se caracteriza bioquimicamente pela deficiência da atividade da enzima glutaril-CoA desidrogenase da rota de degradação dos aminoácidos lisina, hidroxilisina e triptofânio. O bloqueio da rota na …
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Metallo-supramolecular cylinders and their peptide conjugates. Synthesis, dynamics and DNA recognition
… of the DNA molecular recognition by synthetic agents and biomolecules is presented, with a section dedicated to the selective recognition of DNA. In Chapter 2 the study of the dynamic behaviour of the Fe(II) supramolecular cylinder is explored. The behaviour of the complex at variable …
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Estudio de diferentes estrategias para la síntesis de compuestos de oro(I) con propiedades luminiscentes de alta eficiencia
… Thus, by making modifications to the molecular fragments involved in the electronic transitions responsible for the emissive properties, a direct impact on the wavelength tuning is observed. Interestingly, the photophysical properties of this type of compounds have allowed us to carry out an …
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Patterns of intraspecific and intergeneric agonistic behavior in the male and female Mongolian gerbil (<i>Meriones unguiculatus</i>)
<p>Although the agonistic patterns of behavior of the adult male gerbil (<i>Meriones unguiculatus</i>) have been examined in previous work, the behavior of the female gerbil has not been given careful examination. Understood to an even lesser extent is the plasticity of the agonistic response in …
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Amino acid-derived imidazolium salts: platform molecules for N-Heterocyclic carbene metal complexes and organosilica materials
… ligands within metal complexes. Complexes of Ag(I), Pd(II), and Ir(I) were successfully produced using known procedures using ligands derived from glycine, alanine, β-alanine and phenylalanine. The complexes were characterized in solid state using X-Ray crystallography, which allowed for the …
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