Electrochemical Behavior of Complex Based
on Ruthenium(II) Phthalocyaninate

L. A. Khanova^{a, z}, L. I. Krishtalik^a, Yu. Yu. Enakieva^b, Yu. G. Gorbunova^b, and A. Yu. Tsivadze^{a, b}

^a Frumkin Institute of Physical Chemistry and Electrochemistry Russian Academy of Sciences,
Leninskii pr. 31, Moscow, 119991 Russia

^b Kurnakov Institute of General and Inorganic Chemistry Russian Academy of Sciences,
Leninskii pr. 31, Moscow, 119991 Russia

Received February 20, 2007

Abstract—The electrochemical reactions of ruthenium(II) bis(triethylenediamine)tetra-tret-butyl-phthalocya-
ninate in dimethylformamide are studied. Two reversible redox reactions on the platinum amalgam electrode
are revealed at the potentials of –0.73 and –1.16 V (Ag/AgCl). Similarly to several other phthalocyanines, these
redox reactions correspond to the successive transfer of two electrons to phthalocyanine ring. A new phenom-
enon, which has not been reported in the literature for phthalocyanines, namely, the cathodic polymerization,
is discovered. Thus formed polymer is redox-active, and only one cathodic reaction at the potentials from –0.78
to –0.84 V (a shift in the cathodic direction takes place as the film thickness increases) is observed in the poly-
mer. In addition, the polymer exhibits also considerable electron conductivity that enables one to perform var-
ious electrochemical reactions in a wide potential range on the electrode modified with the polymer.

Key words: ruthenium, phthalocyanine, redox potential, cathodic polymerization, redox-active polymer, elec-
tron-conducting polymer

DOI: 10.1134/S1023193507120038

Pleiades Publishing home page | journal home page | top

If you have any problems with this server, contact webmaster.