The stability of poly(o-phenylenediamine) as an electrode material

Electropolymerization of aniline in acid media on the bare and chemically pre-treated aluminum electrodes

“…It is seen that the anodic peak current diminishes in all applied potential. However, the rate of PANI degradation depends on the potential applied, being greater for higher potential values [30]. The data shown in Fig.…”

Electro-oxidation of 1-amino-9,10-anthraquinone and O-phenylenediamine and the Influence of Its Copolymerizaton in the Modified Electrode Properties

“…In turn, after electro-polymerization, a linear growth has also been reported for this compound 7,[28][29][30][31] allowing thus to go deeper into its guiding and stabilizing properties in polymeric matrices obtained once the copolymer has been synthesized; [17][18][19]28,32 this helps to improve redox signals, coatings quality, pH stability, 27 and so on. Consequently, the goal of this work is the obtention of a novel copolymer, made of OPD and 1AAQ, hoping that synergistic effect enables the synthesis of a material with the properties of each homopolymer; these features would confer interesting projections as electrochemical sensor, being thus essential its obtention directly on an electrodic substrate that in this case, owing to its low cost, would be stainless steel, SS.…”

“…1), 7,18,26,27 has also been widely studied by electrochemical means, mainly because its polymer presents no redox response within a broad potential range, so that it has been mainly attempted as a platform for electrocatalysis studies.…”

Electrodeposition of PANi films on platinum needle type microelectrodes. Application to the oxidation of ascorbate in human plasma

“…The increase in current at approximately +0.6 V is due to the beginning of the oxidation to the second redox state, emeraldine/pernigraniline. As the PANi film grows, a small redox peak can appear at around 0.5 V. This peak can be used as a fingerprint to the formation of degradation products of the films caused by chemical reactions of the fully oxidized polymer and can be phenazine type groups [20,[29][30][31] or quinoneimine groups [32,33] which increase the film capacitance and may lead to less conducting PANi films.…”