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ISSN 1998-9539

Electrochemical Characterization of β-Alkyl Substituted Porphyrins and Mn(III) Complexes in Alkaline Solution

Nadezhda M. Berezina,a@ Maria E. Klueva,b and Mikhail I. Bazanova
aIvanovo State University of Chemistry and Technology, Research Institute of Macroheterocyclic Compounds,
153000 Ivanovo, Russia
bIvanovo State Medical Academy of the Ministry of Healthcare of the Russian Federation, 153000 Ivanovo, Russia
@Corresponding author E-mail:
DOI: 10.6060/mhc170507b
Macroheterocycles 2017 10(3) 308-312
A comparative study of electrochemical and electrocatalytic properties of 3,7,12,18-tetramethyl-2,8,13,17-tetraethylporphine (H2TMeTEtP, Etio IV), 2,3,7,8,12,13,17,18-octaethylporphyrin (H2OEtP) and their complexes ((Cl)MTMeTEtP, (Cl)MOEtP, M=Mn(III)) was conducted by cyclic voltammetry in 0.1 M KOH. The sequence and areas of electrochemical processes were established. Values of the half-wave potentials of the first and second electroreduction processes of the π-electron macrocycle system as a whole were correlated with the increase in the length of alkyl substituents. The positive effect of increasing length of a functional substituent at β-positions in a porphine molecule on the electrocatalytic activity of the compounds in the oxygen reduction reaction (ORR) was established.


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