Films formed by electro-oxidation of phenol derivatives
Anticorrosion coatings obtained by electrochemical polymerization

The acidic, neutral or alkaline nature of the electrolytic medium is the main parameter conditioning the nature of the species formed: in alkaline solution, when the $\text{C}—\text{O}$ coupling is not hindered by bulky ortho and/or para phenol groups (2,4 or 2,6-ditertbutyl or isopropylphenol, for example), the pathway leading to the formation of a stable aromatic polyether-type polymer is predominant. In contrast, an acidic or neutral environment favors the formation of phenoquinone-type species (figure