Browsing by Author "Gatica, N."
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- ItemBIOSENSORS' PREPARATION TO BE USED FOR ENTRAPMENT METHOD WITH COPOLYMERS POLYANILINE DERIVATIVES(SOC CHILENA QUIMICA, 2010) Sanchez, C. O.; Isla, A.; Bustos, C.; Diaz, F.; Gatica, N.The entrapment method was used to prepare electrochemical biosensors. Using controlled potential method, copolymers were synthesized between aniline y sulfonated-anilines in aqueous media at pH 4.9 on Platinum disc. The copolymers were characterized by elemental analysis and spectroscopy. Glucose-oxidase was entrapped in the electropolymerization process, at 4.9 in aqueous media. The copolymers modified electrodes and copolymer/enzyme were studied as working electrodes for the oxidation of different H2O2 concentrations and indirect D-glucose quantification at pH 7, using controlled potential and the cyclic voltammetry methods (CV) correspondingly. A linear relationship between the hydrogen peroxide (or D-glucose) concentration and the electrochemical response was obtained at pH 7. The modified-electrodes displayed a fast time of current response, limited by the cycle numbers of the cyclic voltammetry, 232 s, and enough stability to allow for the measurements to be taken after several days.
- ItemEffect of triphenylamine as electron-donor evenly spaced in 2, 4, 6 and 8 thiophene units of the main chain : synthesis and properties(2015) Salas Sánchez, Cristián Osvaldo; Schott Verdugo, Eduardo Enrique; Zarate, Ximena; Macleod-Carey, D.; Sobarzo Aucal, Patricio Antonio; Gatica, N.; Salas Sánchez, Cristián Osvaldo; Schott Verdugo, Eduardo Enrique; Zarate, Ximena; Macleod-Carey, D.; Sobarzo Aucal, Patricio Antonio; Gatica, N.
- ItemPreparation and ESR characterization of polyalkyl-s-indacenyl anion-radicals from polyalkyl-1,5-dilithio-s-indacenes(2011) Adams Wrighton, Christopher William; Araneda, Juan Felipe; Morales Verdejo, César Aarón; Chávez, Irvin; Manríquez M., Juan Manuel; Mac Leod Carey, Desmond; Katir, Nadia; Castel, A.; Rivière, Pierre; Rivière-Baudet, M.; Dahrouch, M.; Gatica, N.
- ItemSynthesis, characterization, thermal stability and fluorescence of hybrid polymers prepared from amino-phenyl esters(2007) Sánchez, C. O.; Alvarado, F.; Bustos, C. J.; Schott Verdugo, Eduardo Enrique; Gatica, N.; Valdebenito, Kelly