title: Ion selectivity of a poly(3-pentylmethoxythiophene) LB-layer modified carbon-fiber microelectrode as a consequence of the second order filtering in voltcoulometry.
abstract: Ion selective properties of poly(3-pentylmethoxythiophene) Langmuir-Blodgett film modified carbon-fiber microelectrode are described. The study of the electrode behavior indicates that important features occur if two electrochemical methods, one of them being kinetics sensitive, are used. While in case of the typical steady-state voltammetry the electrode remains sensitive to both the cations and anions, the kinetics-sensitive properties of voltcoulometry based on the second-order filtering scheme disable the observation of anions. As a model system a mixture of copper and dopamine ions is used.
authors.affiliation: Institute of Physics, Slovak Academy of Sciences, SK-845 11 Bratislava, Slovak Republic. gmucova@savba.sk
authors.forename: Katarína
authors.initials: K
authors.lastname: Gmucová
authors.forename: Martin
authors.initials: M
authors.lastname: Weis
authors.forename: Drahoslav
authors.initials: D
authors.lastname: Barancok
authors.forename: Július
authors.initials: J
authors.lastname: Cirák
authors.forename: Pavol
authors.initials: P
authors.lastname: Tomcík
authors.forename: Juraj
authors.initials: J
authors.lastname: Pavlásek
mesh_terms: D002244:Carbon; D020099:Coated Materials, Biocompatible; D004563:Electrochemistry; D008839:Microelectrodes; D011108:Polymers / Q000737:chemistry*; D013876:Thiophenes / Q000737:chemistry*
chemical_list: D020099:Coated Materials, Biocompatible; D011108:Polymers; D013876:Thiophenes; D002244:Carbon