Browsing by Author "Squella Serrano, Juan"
Now showing items 61-80 of 231
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Sierra Rosales, Paulina; Torres, Rodrigo; Sepulveda, Carlos; Kogan Bocian, Marcelo; Squella Serrano, Juan (Wiley, 2018)Gold nanoparticles (AuNPs) have unique properties, making them attractive for electronic and energy-conversion devices and as (electro)catalysts for electrochemical sensors. In addition to the size and shape of AuNPs, the ...
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Núñez Vergara, Luis; Bontá, M.; Sturm, J. C.; Navarrete Encina, Patricio; Bollo Dragnic, Soledad; Squella Serrano, Juan (PERGAMON-ELSEVIER SCIENCE, 2001-08-31)This paper reports a comprehensive study by tast polarography, d.p.p., and cyclic voltammetry on the electrochemical reduction in different electrolytic media of ortho- and meta-nitrotoluene derivatives. Controlled potential ...
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Bollo Dragnic, Soledad; Muñoz,; Núñez Vergara, Luis; Squella Serrano, Juan (2000)Tacrine, 9-amino-1,2,3,4-tetrahydroacridine, an antialzheimer's disease agent was electrochemically studied and a polarographic method for its quantitative determination in pharmaceuticals was developed. Tacrine was ...
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Bollo Dragnic, Soledad; Muñoz, L.; Núñez Vergara, Luis; Squella Serrano, Juan (WILEY-V C H VERLAG GMBH, 2000-03)Tacrine, 9-amino-1,2,3,4-tetrahydroacridine, an antialzheimer's disease agent was electrochemically studied and a polarographic method For its quantitative determination in pharmaceuticals was developed. Tacrine was ...
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Sierra Rosales, Paulina; Toledo Neira, Carla; Squella Serrano, Juan (Elsevier B.V., 2017)© 2016 Elsevier B.V.Food colorants are chemicals added to foods and soft drinks during manufacturing or processing. However, some of these chemicals represent potential risks to human health, especially if they are consumed ...
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Squella Serrano, Juan; Iribarren, Anny E.; Sturm, Juan C.; Núñez Vergara, Luis (1999)Lacidipine is an antihypertensive drug that is oxidizable at the glassy carbon electrode. The voltammetric oxidation of lacidipine in aqueous-alcoholic solutions (70 + 30) produces a well-defined voltammetric peak when ...
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Núñez Vergara, Luis; Squella Serrano, Juan (1983)The a.c polarographic method has been applied in the study of the glutathione-ampicillin interaction at pH 7.4 and 37°C. Ampicillin shifted the peak potentials of glutathione to less negative values. A linear relation was ...
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Núñez Vergara, Luis; Squella Serrano, Juan (1983)The a.c polarographic method has been applied in the study of the glutathione-ampicillin interaction at pH 7.4 and 37°C. Ampicillin shifted the peak potentials of glutathione to less negative values. A linear relation was ...
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Núñez Vergara, Luis; Farías Oddone, Daniel Rodrigo; Bollo Dragnic, Soledad; Squella Serrano, Juan (ELSEVIER SCIENCE, 2001-01)This paper reports the feasibility of free radicals formation from flutamide by using cyclic voltammetry. The electrochemical characteristics and the reactivity of the one-electron reduction product from flutamide in mixed ...
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Squella Serrano, Juan; González, P.; Bollo Dragnic, Soledad; Núñez Vergara, Luis (KLUWER ACADEMIC/PLENUM PUBL, 1999-01)
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Núñez Vergara, Luis; Ortiz, Luis J.; Bollo Dragnic, Soledad; Squella Serrano, Juan (1997)This paper reports a comprehensive study by cyclic voltammetry on the electrochemical characteristics and the reactivity of the one-electron reduction product from a series of nitro aryl 1,4-dihydropyridines in mixed and ...
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Salazar González, Ricardo Andrés; Navarrete Encina, Patricio; Camargo Grandón, Rodrigo; Squella Serrano, Juan; Núñez Vergara, Luis (ELSEVIER SCIENCE SA, 2008-10-01)This work reports the electrochemical oxidation of two new synthetic C4-vanillin and -isovanillin-1,4-dihydropyridines in aprotic medium. Its reactivity with alkylperoxyl radicals ABAP-derived at pH 7.4 is also studied. ...
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Squella Serrano, Juan; Cassels Niven, Bruce; Arata, M.; Bavestrello, M. P.; Núñez Vergara, Luis (Pergamon Press Ltd., 1993-03-23)Four amphetamine derivatives bearing a methylenedioxy group at positions 3 and 4 of the benzene ring and differing in their substitution at C(6) were studied by differential pulse voltammetry in aqueous media. These ...
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Squella Serrano, Juan; Cassels Niven, Bruce; Arata, M.; Bavestrello, M. P.; Núñez Vergara, Luis (1993)Four amphetamine derivatives bearing a methylenedioxy group at positions 3 and 4 of the benzene ring and differing in their substitution at C(6) were studied by differential pulse voltammetry in aqueous media. These ...
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Álvarez Lueje, Alejandro; Pessoa Mahana, Hernán; Núñez Vergara, Luis; Squella Serrano, Juan (ELSEVIER SCIENCE, 1998-08)The electrochemical reduction of four 2,5-dimethoxy nitrobenzene 6-substituted derivatives in aqueous and mixed media by cyclic voltammetry, tast and differential pulse polarography were studied. In aqueous media, pH > 8, ...
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Squella Serrano, Juan; Campero, A.; Maraver, J.; Carbajo, J. (PERGAMON-ELSEVIER SCIENCE, 2006-10-25)The electrochemical reduction of 2-nitroimidazole in a non-aqueous medium using cyclic voltammetry (CV) at a mercury electrode was carried out. The 2-nitroimidazole derivative in DMF + 0.1 M tetra(n-butyl)ammonium ...
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Núñez Vergara, Luis; Santander, Paola; Navarrete Encina, Patricio; Squella Serrano, Juan (ELSEVIER, 2005-06-15)A comprehensive study of the electrochemical reduction in protic media of parent C-4 nitrophenyl 1,4-DHPs and their corresponding nitrosophenyl 1,4-DHPs was carried out. The reduction potentials of synthesized aromatic ...
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Sturm, J. C.; Núñez Vergara, Luis; Squella Serrano, Juan (1992)Electrochemical reduction of nicergoline was studied at different pH and concentrations using differential pulse polarography and linear sweep voltammetry. Both techniques reveal that the reduction process occurs with ...
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Núñez Vergara, Luis; Bontá, M.; Sturm Schaub, Juan; Navarrete Encina, Patricio; Bollo Dragnic, Soledad; Squella Serrano, Juan (ELSEVIER SCIENCE, 2001-06-15)A comprehensive study of the electrochemical reduction, in different electrolytic media, of two nitroso compounds, i.e. ortho- and meta-nitrosotoluene derivatives has been carried out. Furthermore, UV-vis and EPR spectroscopic ...
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Squella Serrano, Juan; Huerta, M; Bollo Dragnic, Soledad; Pessoa, H; Núñez Vergara, Luis (Elsevier, 1997)The electrochemical reduction of three nitrotetralone derivatives by tast and differential pulse polarography and cyclic voltammetry in a wide pH range was studied. In aqueous media, the reduction of mono- and dinitrotetralone ...