On the polymerization of 2-aminodiphenylamine: an electrochemical and spectroscopic study

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Title: On the polymerization of 2-aminodiphenylamine: an electrochemical and spectroscopic study
Authors: Cotarelo Méndez, María de los Ángeles | Huerta Arráez, Francisco | Mallavia Marín, Ricardo | Morallon, Emilia | 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 | Universidad Miguel Hernández. Instituto de Biología Molecular y Celular
Keywords: 2-Aminodiphenylamine | Electropolymerization | Cyclic voltammetry | In situ FTIR spectroscopy | NMR spectroscopy
Knowledge Area: Química Física | Ciencia de Materiales
Date Created: 29-Oct-2005
Issue Date: 1-Dec-2005
Publisher: Elsevier
Citation: COTARELO MÉNDEZ, Mª de los Ángeles, et al. "On the polymerization of 2-aminodiphenylamine: an electrochemical and spectroscopic study". Synthetic Metals. Vol. 156, Issue 1 (5 Jan. 2006). ISSN 0379-6779, pp. 51-57
Abstract: The electrochemical oxidation of 2-aminodiphenylamine (2ADPA) was performed by cyclic scanning of the potential in aqueous HCl solutions. A mixture of oligomeric compounds, named poly(2ADPA), was deposited on the surface of the electrode. The chemical structures present in poly(2ADPA) containing phenazine units and open-ring units were assigned by 1H NMR spectroscopy. CV results revealed that the redox transformation of poly(2ADPA) from the fully reduced to the fully oxidized state occurs under a single voltammetric peak. The SEM images obtained for the polymer deposited on platinum substrates showed a “fallen leaves” morphology. In situ FTIR spectroscopy experiments carried out during the reversible oxidation of the polymer revealed that the conversion of aromatic rings (1500 cm−1) into quinoid structures (1524–1590 cm−1) is of major significance. Besides, the transformation of secondary aromatic amines (1301 cm−1) into fully oxidized imines and polaronic structures (1470, 1389, 1330 and 1250 cm−1) has been observed.
Sponsor: Ministerio de Ciencia y Tecnlogía (MAT2004-1479); Comisión Europea (Fondos ERDF).
URI: http://hdl.handle.net/10045/7731
ISSN: 0379-6779
DOI: 10.1016/j.synthmet.2005.10.007
Language: eng
Type: info:eu-repo/semantics/article
Peer Review: si
Publisher version: http://dx.doi.org/10.1016/j.synthmet.2005.10.007
Appears in Collections:INV - GEPE - Artículos de Revistas

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