Zobrazeno 1 - 10 of 12 pro vyhledávání: '"Diego Villagra"'
1
Electrochemical reduction of nitrite at poly-[Ru(5-NO2-phen)2Cl] tetrapyridylporphyrin glassy carbon modified electrode
Autor: Mauricio Isaacs, María J. Aguirre, Paulina Dreyse, César Cáceres, A. E. Aliaga, Karla Calfumán, Diego Villagra
Publikováno v: ELECTROCHIMICA ACTA
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
This work describes the preparation of modified electrodes with Poly-tetraruthenated porphyrin. Also, a detailed Raman and electrochemical characterization of these surfaces is shown. Glassy carbon electrodes were modified with Ni (II), Zn (II) and m
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5c646848c042be1bca691d8d47dec1aa
https://doi.org/10.1016/j.electacta.2011.03.028
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2
Electrochemical preparation of conductive films of tetrapyridylporphyrins coordinated to four [Ru(5-NO2-phen)2Cl]+ groups
Autor: Mauricio Isaacs, Starla D. Glover, Clifford P. Kubiak, John Goeltz, Patricio E. Iturriaga, María J. Aguirre, Diego Villagra, Paulina Dreyse
Publikováno v: Journal of Electroanalytical Chemistry. 648:98-104
This work describes the preparation of a new tetraruthenated porphyrin and the corresponding polymeric film. This macromolecule consists of a Ni(II) tetrapyridylporphyrin coordinated to four [Ru(5-NO 2 -phen) 2 Cl] + moieties. The 5-NO 2 -phen ligand
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::33005eedb8e6a9893b613ab22c63f9fe
https://doi.org/10.1016/j.jelechem.2010.08.007
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3
Nafion/tetraruthenated porphyrin glassy carbon-modified electrode: characterization and voltammetric studies of sulfite oxidation in water–ethanol solutions
Autor: Betty Matsuhiro, Carmen Arévalo, Claudia Yáñez, Karla Calfumán, Diego Villagra, Leonora Mendoza, Mauricio Isaacs, María J. Aguirre
Publikováno v: Journal of Solid State Electrochemistry. 14:1065-1072
In this work, the modification of a glassy carbon electrode with tetraruthenated porphyrins electrostatically assembled onto a Nafion film, previously adsorbed on the electrode surface, is reported. This modified electrode was characterized by scanni
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::15ae3d904fef0671377f43047a4ac011
https://doi.org/10.1007/s10008-009-0916-0
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4
Synthesis, structure and electrochemical properties of the cationic complex tris-(imidazolidine-1,10-phenanthroline)iron(II)
Autor: María J. Aguirre, Camilo García, Mauricio Isaacs, Betty Matsuhiro, Diego Villagra, Leonora Mendoza, Miriam Rossi, Francesco Caruso
Publikováno v: Inorganic Chemistry Communications. 12:392-395
The complex [FeII(Imz-phen)3](PF6)2, (Imz-phen = imidazolidine-[4,5-f]-1,10-phenanthroline) has been prepared and characterized using X-ray diffraction, UV–vis and IR spectroscopy, elemental analysis, fast atomic bombardment (FAB) mass spectrometry
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::58142a967e816c786a618e2ea2b3d150
https://doi.org/10.1016/j.inoche.2009.02.017
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5
Preparation and properties of heterometallic cube derivatives Mo3M′S4 from [Mo3S4(H2O)9]4+ with M′ = Pt, Rh and Re, and [W3S4(H2O)9]4+ analogues
Autor: Chee-Hun Kwak, William Clegg, A. Geoffrey Sykes, Diego Villagra, Ahmed M. El-Hendawy, Maxim N. Sokolov, Mark R. J. Elsegood
Publikováno v: Journal of the Chemical Society, Dalton Transactions. :2611-2615
Three heterometallic Mo3M′S4 derivatives (M′ = Pt, Rh, Re) of the incomplete single-metal depleted cube [Mo3S4(H2O)9]4+ have been prepared by reactions with [PtCl4]2− (+ H3PO2 reductant), RhCl3 and [Re(CO)5Br], respectively. With [PtCl4]2−, t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b3444e169ea500ee240a39a191734e19
https://doi.org/10.1039/b104755h
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6
Determination of S(IV) Oxoanions at Poly[Ru(5-NO2-Phen)2Cl] Tetrapyridylporphyrin Glassy Carbon Modified Electrode
Autor: Paulina Dreyse, Diego Villagra, Diego Quezada, Leonora Mendoza, Mauricio Isaacs, Betty Matsuhiro, María J. Aguirre, Jessica Honores
Publikováno v: ELECTROANALYSIS
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
Glassy carbon electrodes modified with conducting polymers of Ni(II), Zn(II) and metal free tetraruthenated porphyrin were evaluated for reduction and oxidation processes of S(IV) oxoanions in Na2SO3/water-ethanol at pH 1.0 and 3.5, showing electroca
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::18002ffd41ccae5a97cde2a4e77f22ec
https://doi.org/10.1002/elan.201200038
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7
Akademický článek
Dosis de radiación en tomografía computarizada: observación en tres hospitales de la Región de Valparaíso, Chile
Autor: Yaneet Reyes, Mario G. Santamarina, Diego Villagrán, Francisco Torres, Iván Vial, Cristóbal Villarroel, Rodrigo Salas, Stéren Chabert
Publikováno v: Revista Chilena de Radiología, Vol 28, Iss 3 (2022)
Las dosis de radiación ionizante en tomografía computarizada (TC) tienen el potencial de generar efectos deletéreos. El tema no es trivial y la pregunta permanece en cuanto a cómo se sitúa el manejo de dosis, en concreto, en Chile. El objetivo d
Externí odkaz: https://doaj.org/article/c92204cdabd644149172c8946d5eb67e
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8
EFFECT OF THE NUMBER OF SUBSTITUENTS ON THE BEHAVIOR OF MODIFIED ELECTRODES WITH COBALT PORPHYRINS SUBSTITUTED WITH A DIFFERENT NUMBERS OF BIS(METHOXYPHENYL) GROUPS TOWARD THE OXIDATION OF SULFITE
Autor: M.I Azócar, Mauricio Isaacs, William Cheuquepan, Betty Matsuhiro, María J. Aguirre, Diego Villagra, Leonora Mendoza, Galo Ramírez, Yo-Ying Chen
Publikováno v: Journal of the Chilean Chemical Society v.55 n.2 2010
SciELO Chile
CONICYT Chile
instacron:CONICYT
JOURNAL OF THE CHILEAN CHEMICAL SOCIETY
Artículos CONICYT
Journal of the Chilean Chemical Society, Volume: 55, Issue: 2, Pages: 253-256, Published: JUN 2010
In this study, we compared four glassy carbon electrodes modified with adsorbed porphyrins of cobalt containing one, two, three, or four bis(methoxyphenyl) groups as substituents of the ligand. The aim of this work was to determine the effect of thes
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1a5645ebc632bd41e51b9ea0f2b6cb6b
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072010000200024
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9
ELECTROCHEMICAL REDUCTION OF NITRITE AT POLYMERIC Co (II)-TETRA-3-AMINO-PHENYL-PORPHYRIN MODIFIED ELECTRODE
Autor: Camilo García, Paulina Dreyse, Diego Villagra, Karla Calfumán, Mauricio Isaacs, Cristian San Martín
Publikováno v: Journal of the Chilean Chemical Society v.52 n.4 2007
SciELO Chile
CONICYT Chile
instacron:CONICYT
Journal of the Chilean Chemical Society, Volume: 52, Issue: 4, Pages: 1305-1308, Published: 2007
This paper describes the electrochemical reduction of nitrite ion in basic media 0.2M KHC0(3), with glassy carbon or ITO electrodes modified with a conducting polymer derived from Co(II)tetra-3-aminophenyl-porphyrin. Cyclic voltammetry results show a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ddbed15b92171863dae9293b7d85de18
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072007000400008
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10
Akademický článek
Dipyridophenazine as Electronic Tunable Ligands for the Palladium-Catalyzed Synthesis of Polyketones.
Autor: Diego Villagra, Rosa López, Sergio A. Moya, Carmen Claver, Amaia Bastero
Publikováno v: Organometallics; Feb2008, Vol. 27 Issue 6, p1019-1021, 3p
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