The electrochemical co-polymerization of p-aminodiphenylamine and aniline: effect of pH

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Title: The electrochemical co-polymerization of p-aminodiphenylamine and aniline: effect of pH
Authors: Cotarelo Méndez, María de los Ángeles | Huerta Arráez, Francisco | Quijada Tomás, César | Cases Iborra, Francisco Javier | Vázquez Picó, José Luis
Research Group/s: Electrocatálisis y Electroquímica de Polímeros
Center, Department or Service: Universidad de Alicante. Departamento de Química Física | Universidad Politécnica de Valencia. Departamento de Ingeniería Textil y Papelera
Keywords: Aniline | 4-ADPA | Cyclic voltammetry | Co-polymerization
Knowledge Area: Química Física | Ciencia de Materiales
Date Created: 8-Oct-2004
Issue Date: 20-Aug-2004
Publisher: Elsevier
Citation: COTARELO MÉNDEZ, María de los Ángeles, et al. "The electrochemical co-polymerization of p-aminodiphenylamine and aniline: effect of pH". Synthetic Metals. Vol. 148, Issue 1 (3 Jan. 2005). ISSN 0379-6779, pp. 81-85
Abstract: The electrochemical oxidation of p-aminodiphenylamine (4ADPA) in the presence of aniline in phosphate medium of pH ranging from 1 to 10.5 has been investigated. Mixtures of both monomers can be co-polymerized to produce electroactive poly aniline-co-4ADPA (Pan-4adpa) films if the pH of the medium is kept, approximately, within 3 and 9 and the upper potential limit is lower than the oxidation potential of aniline. Pan-4adpa growth rates are pH dependent and are also affected by the amount of polymeric material deposited on the electrode surface. It has been suggested the existence of a certain inhibition effect of both H+ and OH− on the polymerization reaction. Contrary to what is observed for those films synthesized at pH 5 and 7, the growth of Pan-4adpa at pH 8 seems to be an autocatalytic process until the inhibition of the polymerization reaction takes place.
Sponsor: Ministerio de Ciencia y Tecnología MAT2001-1007, MAT2004-01479 y REN2001-2304-C02-02/TECNO
ISSN: 0379-6779
DOI: 10.1016/j.synthmet.2004.08.035
Language: eng
Type: info:eu-repo/semantics/article
Peer Review: si
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Appears in Collections:INV - GEPE - Artículos de Revistas

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