Salavagione, Horacio Javier, Arias Pardilla, Joaquín, Pérez Martínez, José María, Vázquez Picó, José Luis, Morallon, Emilia, Miras, María Cristina, Barbero, César Alfredo
Study of redox mechanism of poly(o-aminophenol) using in situ techniques: evidence of two redox processes
SALAVAGIONE, Horacio Javier, et al. "Study of redox mechanism of poly(o-aminophenol) using in situ techniques: evidence of two redox processes". Journal of Electroanalytical Chemistry. Vol. 576, Issue 1 (15 Febr. 2005). ISSN 0022-0728, pp. 139-145
URI: http://hdl.handle.net/10045/2558
DOI: 10.1016/j.jelechem.2004.10.013
ISSN: 0022-0728
Abstract: 
The poly(o-aminophenol) (POAP) redox process has been studied in aqueous acid solution using spectroscopic and optic in situ
techniques. The redox transition of the POAP from its completely oxidized state to its completely reduced state occurs through two
consecutive reactions in which a charged intermediate species takes part. UV–Vis and Raman signals agree with an increase of the
concentration of an intermediate species until the potential of the maximum redox peak, which later diminishes with the potential. The results of in situ FTIR spectroscopy agrees with Raman measurements. Probe beam deflection (PBD) suggests that during its
oxidation, the polymer incorporates anions in a first process and then expels protons in a second one.
Keywords:Poly(o-aminophenol), In situ Raman spectroscopy, Probe beam deflection
Elsevier
info:eu-repo/semantics/article