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- W1574143005 abstract "The anodic oxidation of ortho-aminophenol (oAP) in acid aqueous media on different electrode materials, leads to the formation of an electroactive polymer, poly(oAP). Cyclic voltammetric studies allow the inference of a quite complex mechanism for the formation of this film. These studies and the spectroscopie data suggest that the structure of poly(oAP) is mainly a polymer of phenoxazine rings. To confirm these studies the electroactive polymer was also prepared by chemical oxidation of oAP and its properties were compared with those of the electrochemically produced poly(oAP). Moreover, a film was obtained by electrooxidation of the cyclic dimer of oAP, the 3-aminophenoxazone (3APZ). The differences between these films are discussed, leading to the conclusion that the actual monomer in the formation of poly(oAP) is 3APZ. However, the fact that the film obtained from pure 3APZ has an ideal nernstian behavior while the one obtained from oAP does not, gives evidence that side reactions and consequently a “side” polymer make the real structure of poly(oAP) more complex. Then the conditions for obtaining reproducible poly(oAP) modified electrodes are proposed. In addition, the electrochemical oxidation of compounds structurally related to oAP was carried out. The studies with m- and p-aminophenol show that o-hydroxy-substitution of anilines is required for the formation of ring chain films like poly(oAP). The o-anisidine gives a linear polymer of the polyaniline type, since the formation of a cyclic dimer is hindered. The mechanism of electropolymerization of o-phenylenediamine and its cyclic dimer (2,3-aminophenazine) seems to have similar features to that of oAP." @default.
- W1574143005 created "2016-06-24" @default.
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- W1574143005 date "1989-05-01" @default.
- W1574143005 modified "2023-09-26" @default.
- W1574143005 title "Formation of a novel electroactive film by electropolymerization of ortho-aminophenol" @default.
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- W1574143005 doi "https://doi.org/10.1016/0022-0728(89)85103-4" @default.
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