1. Electrochemically prepared polypyrrole-2-carboxylic acid films: synthesis protocols and studies on biosensors
- Author
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Débora Gonçalves, Didier Léonard, Mauricio Foschini, François Bessueille, Ronaldo C. Faria, Alexandre Marletta, Nicole Jaffrezic-Renault, Instituto de Física, Universidade federal de uberlandia, Departamento de Química, Universidade Federal de Sao Carlos, SIMS - Surfaces-(bio)Interfaces - Micro & Nano Systèmes (2011-2014), Institut des Sciences Analytiques (ISA), Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Instituto de Física de São Carlos (IFSC-USP), Universidade de São Paulo (USP), the Brazilian agencies FAPESP, the CNPq, theCAPES, and bilateral cooperation project between France and Brazil : COFECUB Project 507/05
- Subjects
POLYPHENOL OXIDASE ,ELECTRODES ,Carboxylic acid ,Inorganic chemistry ,POLÍMEROS (MATERIAIS) ,Conducting polymers ,Infrared spectroscopy ,02 engineering and technology ,Electrolyte ,OXIDATION ,010402 general chemistry ,Polypyrrole ,01 natural sciences ,Analytical Chemistry ,chemistry.chemical_compound ,[CHIM.ANAL]Chemical Sciences/Analytical chemistry ,ACETONITRILE ,ELECTROPOLYMERIZATION ,Electrochemistry ,Fourier transform infrared spectroscopy ,Acetonitrile ,Voltammetry ,chemistry.chemical_classification ,CONSTRUCTION ,PHENOLIC-COMPOUNDS ,021001 nanoscience & nanotechnology ,0104 chemical sciences ,TYROSINASE ,Biosensors ,IMMOBILIZATION ,chemistry ,POLYPYRROLE FILMS ,Cyclic voltammetry ,0210 nano-technology ,Functionalized polypyrrole - Abstract
Instituto de Fsica de S¼o Carlos, Universidade de S¼o Paulo, Av. Trabalhador S¼o-carlense 400, S¼o Carlos, SP, postcode 369,13560-970, Brazil*e-mail: gdebora@ifsc.usp.brReceived: October 17, 2012Accepted: December 4, 2012Published online: February 22, 2013AbstractThe process for obtaining polypyrrole-2-carboxylic acid (PPY-2-COOH) films in acetonitrile was investigated usingcyclic voltammetry, electrochemical quartz crystal microgravimetry (EQCM), and infrared spectroscopy (FTIR).Different potential ranges were applied during cyclic voltammetry experiments with the aim of obtaining films with-out and with the presence of controlled amounts of water added in acetonitrile. The FTIR spectra of the films haveevidenced that cations and anions from the electrolyte solution were incorporated into the PPY-2-COOH structure,with a preferential adsorption of cations. After chemically immobilizing polyphenoloxidase (tyrosinase, PPO), PPY-2-COOH/PPO films were build for amperometric detection of catechol, establishing a linear limit of concentrationsranging from 5.010
- Published
- 2013
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