Browsing by Author "201-0010582"
Now showing items 1-20 of 63
-
García, Marycarmen; Bollo Dragnic, Soledad; Rivas, Gustavo A.; Ferreyra, Nancy F.; Yáñez, Claudia (Elsevier, 2016)The immobilization of three amino-beta-cyclodextrin derivatives on gold surfaces via different bottom-up approaches was evaluated using cyclic voltammetry and surface plasmon resonance. Direct adsorption on gold and covalent ...
-
Cutiño López, Eduardo Andrés (Universidad de Chile, 2007)Se realizó un estudio voltamétrico de dos compuestos 4-nitroimidazólicos los que presentan diferentes substituyentes (-H, -CH3) en la posición 1 del anillo imidazólico. Se determinó el comportamiento electroquímico en medio ...
-
Finger Caraccioli, Sebastián (Universidad de Chile, 2007)En el presente estudio se investigó mediante técnicas electroquímicas tres derivados 4-(m-nitrosofenil)-1,4-dihidropiridina (m-NO-DHP) en medio acuoso. Las m-NO-DHP estudiadas: 2,6-dimetil-3,5-dimetoxicarbonil-4-(meta ...
-
López Menadier, Marcelo Leonardo (Universidad de Chile, 2006)En esta Memoria se estudió la reactividad de tres nuevas 1,4-dihidropiridinas (1,4-DHP) frente al anión radical superóxido (O2 .-), y se evaluó la influencia de los sustituyentes en posición 4 del anillo dihidropiridí ...
-
Eguílaz, Marcos; Venegas, Constanza; Gutiérrez, Alejandro; Rivas, Gustavo; Bollo Dragnic, Soledad (Elsevier, 2016)We report for the first time the use of glassy carbon electrodes (GCE) modified by drop-coating with multi-walled carbon nanotubes (MWCNTs) dispersed in cytochrome c as platform for the construction of bienzymatic biosensors, ...
-
Mosquera, Nerly; Aguirre, Maria J.; Ruiz León, Domingo; García, Camilo; Arce, Roxana; Bollo Dragnic, Soledad (Sociedad Chilena de Química, 2017)Hydrogen peroxide (H2O2) plays an important role as an intermediary in different biological, chemical and environmental systems. It has been widely used as an oxidizing and antimicrobial agent, in germicides production and ...
-
Yedinak, E.; Venegas, C. J.; Brito, T. P.; Ruiz León, Domingo; Bollo Dragnic, Soledad (Wiley-V C H Verlag GMBH, 2018)For the first time Co2SnO4 (CTO)/Carbon nanotubes (CNT) composites were prepared and used to modify glassy carbon electrodes for the amperometric determination of hydrogen peroxide. The catalytic activity of composites ...
-
Báez, Daniela F.; Bollo Dragnic, Soledad (Springer, 2016)A comparative study about the electrochemical response of glassy carbon electrode modified with four different carbon nanomaterial (CNM) against dsDNA is reported. The CNM used were oxidized and nonoxidized multiwalled ...
-
Primo, E. N.; Gutierrez, F. A.; Luque, G. L.; Dalmasso, P. R.; Gasnier, A.; Jalit, Y.; Moreno, M.; Bracamonte, M. V.; Eguílaz Rubio, M.; Pedano, M. L.; Rodríguez, M. C.; Ferreyra, N. F.; Rubianes, M. D.; Bollo Dragnic, Soledad; Rivas, G. A. (Elsevier, 2013)tThis review present a critical comparison of the electrochemical behavior and analytical performance ofglassy carbon electrodes (GCE) modified with carbon nanotubes (CNTs) dispersed in different polymers:polyethylenimine ...
-
Yáñez Soto, Claudia; Araya, M.; Bollo Dragnic, Soledad (SPRINGER, 2010-10)For first time the complexation of bentazon (Btz) with native b-cyclodextrin (b-CD) and modified sulfobutylether- b-CD (SBE-CD) was studied by differential pulse voltammetry. In addition, a spectrophotometry UV–Visible study ...
-
Bollo Dragnic, Soledad; Yáñez Soto, Claudia; Sturm Schaub, Juan; Núñez Vergara, Luis; Squella Serrano, Juan (AMER CHEMICAL SOC, 2003-04-15)Potassium ferricyanide ([Fe(CN)(6)](3-)) reduction and ferrocenemethanol (Fe-OH) oxidation at a beta-cyclodextrin (beta-CD)-modified gold electrode were investigated by cyclic voltammetry (CV) and scanning electrochemical ...
-
Bollo Dragnic, Soledad; Núñez Vergara, Luis; Squella Serrano, Juan (ELSEVIER SCIENCE, 2004-01-15)PA-824 (2-nitro-6-(4-trifluoromethoxy-benzyloxy)-6,7-dihydro-5H-imidazo[2,1-b][1,3]oxazine) is being tested as antituberculosis drug. Little is known on the action mechanism of PA-824; however the reduction of the nitro ...
-
Bollo Dragnic, Soledad; Núñez Vergara, Luis; Bontá, M.; Chauviere, G.; Perie, J.; Squella Serrano, Juan (ELSEVIER SCIENCE, 2001-09-21)Megazol (2-amino-5-(1-methyl-5-nitro-2-imdazolyl)-1,3,4-thiadiazol, CAS 19622-55-0) and related nitroimidazole compounds are being tested as antichagasic drugs. Little is known on the mode of action of megazol. However, ...
-
Carbajo, J.; Bollo Dragnic, Soledad; Núñez Vergara, Luis; Campero, A.; Squella Serrano, Juan (ELSEVIER SCIENCE, 2002-08-23)We have chosen 4-nitroimidazole (4-NIm) as a prototype of nitroimidazolic compounds in order to carry out an exhaustive cyclic voltammetric study in protic media, 0.1 M Britton-Robinson buffer+0.3 M KCl with ethanol as a ...
-
Cyclic voltammetry and digital simulation of the electroreducction of ortho-and meta-nitro aryl ... Bollo Dragnic, Soledad; Núñez Vergara, Luis; Squella Serrano, Juan (Sociedad Chilena de Química, 1999)Cyclic voltammetry (CV) and digital simulation methods are utilezed to elucidate the mechanism of electrochemical reduction of a series of nitro aryl 1,4-dihydropyridines im protic (aqueous) and mixed media. The experimental ...
-
Bollo Dragnic, Soledad; Finger Caraccioli, Sebastián; Sturm Schaub, Juan; Núñez Vergara, Luis; Squella Serrano, Juan (PERGAMON-ELSEVIER, 2007-04-20)The heterogeneous electron transfer reaction for the reduction of some nitroso aromatic derivatives in aqueous-alcoholic medium was studied on both mercury and glassy carbon electrodes (GCE) by using cyclic voltammetry ...
-
Fuente Salvat, Elizabeth de la (Universidad de ChilePrograma Cybertesis, 2007)
-
Primo, Emiliano N.; Cañete Rosales, Paulina; Bollo Dragnic, Soledad; Rubianes, María D.; Rivas, Gustavo A. (2013)We report for the first time the use of double stranded calf-thymus DNA (dsDNA) to successfully disperse bamboo-like multi-walled carbon nanotubes (bCNT). The dispersion and the modified electrodes were studied by different ...
-
Maya Arango, Juan; Morello Casté, Antonio; Repetto Scaramelli, Yolanda; Tellez Neubauer, Rowena; Rodríguez, A.; Zelada, U.; Puebla, P.; Caballero S., Esther; Medarde, M.; Núñez Vergara, Luis; Squella Serrano, Juan; Bontá, M.; Bollo Dragnic, Soledad; Feliciano M., Arturo San (PERGAMON-ELSEVIER SCIENCE, 2000-01)A series of 3-chloro-phenyl-1,4-dihydropyridine derivatives produced different degrees of inhibition of parasite growth and respiration on clone Brener, LQ and Tulahuen strains of Trypanosome cruzi epimastigotes. Respiratory ...
-
Báez Cornejo, Daniela; Ramos Peroni, Gabriel; Corvalán Aguilar, Alejandro; Cordero Garayar, María Luisa; Bollo Dragnic, Soledad; Kogan Bocian, Marcelo (Elsevier, 2020)Artificial micromotors evolve to improve multitasking performance in different research areas, and different power sources are combined to give rise to hybrid micromotors. Such combinations can alter physical features and ...