Anodic Doping of Electropolymerized Copper 2,9,16,23-Tetraaminophthalocyanine
Source: Russian Journal of Electrochemistry, Volume 37, Number 10, October 2001 , pp. 1012-1016(5)
Publisher: MAIK Nauka/Interperiodica
Anodic polymerization of 2,9,16,23-tetraamino substituted copper phthalocyanine is studied in 0.1 M Bu_4NBF_4and Bu_4NClO_4in dimethylformamide (DMF). The electropolymerization rate in DMF is two to three times that in dimethyl sulfoxide, due to a lesser donor ability of DMF and a weaker blocking of radical cations formed during the oxidation of initial copper phthalocyanine. According to a study of the electrochemical behavior of polymerized copper phthalocyanine in neutral aqueous solutions, the anodic doping of the polymer is accompanied by one redox transition. The two redox transitions, observed in an aqueous solution of acid, are explained by two successive steps of oxidation of an aniline-like structure or by the involvement of two protonated systems in the doping process, specifically, a stacked system (phthalocyanine ligands collected in parallel stacks) and a polyaniline system.
Document Type: Regular paper
Affiliations: 1: Frumkin Institute of Electrochemistry, Russian Academy of Sciences, Leninsky pr. 31, Moscow, 117071 Russia 2: Institute of Physiologically Active Substances, Russian Academy of Sciences, p/o Chernogolovka, Noginsk raion, Moscow oblast, 142432 Russia 3: Institute of Physical Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 117915 Russia
Publication date: 2001-10-01