resumo
This paper describes the synthesis and the characterization of poly(phenylene oxide)-based nanoelectrode arrays. Using a hybrid organic/inorganic "sol-gel" solution, FTO (fluoro-tin-oxide) nanoelectrode arrays were synthesized with well-defined order, and controlled diameter of the nanoelectrode and the center-to-center distance. These FTO/ZrO2 nanoelectrodes were modified with ultrathin, polymer coatings based on the self-limiting electropolymerization of phenol. The polymer coated mainly the Fro nanoelectrodes. Impedance coupled with FTIR spectroscopies studies shows that the electrodeposited polymer coating is uniform, conformal and pin-hole free. The CP-AFM (conductive probe-AFM) imaging studies confirm that the ultrathin, uniform insulating poly(phenylene oxide) (PPO) layer homogeneously coats the FTO nanoelectrodes. (C) 2011 Elsevier Ltd. All rights reserved.
palavras-chave
ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY; CHEMICAL SOLUTION DEPOSITION; PARTIALLY BLOCKED ELECTRODES; CYCLIC VOLTAMMETRY RESPONSE; SELF-ASSEMBLED MONOLAYERS; MICROELECTRODE ARRAYS; CAPILLARY-ELECTROPHORESIS; CHLORINATED PHENOLS; CHARGE-TRANSFER; PART II
categoria
Electrochemistry
autores
Mosa, J; Fontaine, O; Ferreira, P; Borges, RP; Vivier, V; Grosso, D; Laberty-Robert, C; Sanchez, C
nossos autores
Paula Celeste da Silva Ferreira
Investigador Coordenadoragradecimentos
The authors are grateful to FCT and Programa Operacional Factores de Competitividade for financial support (PTDC/CTM/98130/2008). They also acknowledge the Exchange Cooperation Program CNRS/FCT. The authors acknowledge the use of the atomic force microscope at the Centro de Fisica da Materia Condensada, Universidade de Lisboa. J.M. acknowledges the CNRS for financial support and L Pelaez for her assistance with the experimental techniques. O.F. acknowledges the TERAGMASTOR program. We acknowledge S. Borensztajn (L.I.S.E - UPR 15 CNRS) for assistance in SEM characterizations.