Preparation of cobalt polyporphine and its catalytic properties in oxygen electroreduction


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A new member of the polyporphine series—cobalt polyporphine of type I (pCoP-I)—was prepared from the starting magnesium polyporphine of type I (pMgP-I) by ion exchange, i.e. by sequential processing of the pMgP-I polymer film on the electrode surface with solutions of trifluoroacetic acid (forming metalfree polyporphine of type I, pH2P-I) and cobalt(II) acetate in organic solvents. The completeness of each stage of ion exchange can be judged from the change in the electrochemical and spectral characteristics of the obtained polymer films of unsubstituted porphine (?H2P-I) and cobalt porphine (pCoP-I) of type I. Oxidative transformation of this polyporphine pCoP-I was performed, which led to the formation of additional bonds between the neighboring porphine units in the polymer film (transition of polymer of type I into polymer of type II, pCoP-II). The behavior of the polymer films of cobalt polyporphine of types I and II in oxygen electroreduction was studied. The films showed catalytic activity in this process.

作者简介

D. Konev

Institute of Problems of Chemical Physics; Mendeleev Institute of Chemical Technology of Russia

编辑信件的主要联系方式.
Email: dkfrvzh@gmail.com
俄罗斯联邦, Chernogolovka, Moscow oblast; Moscow

K. Lizgina

Moscow State University

编辑信件的主要联系方式.
Email: ks09@inbox.ru
俄罗斯联邦, Moscow

D. Khairullina

Mendeleev Institute of Chemical Technology of Russia

Email: ks09@inbox.ru
俄罗斯联邦, Moscow

M. Shamraeva

Moscow State University

Email: ks09@inbox.ru
俄罗斯联邦, Moscow

C. Devillers

Institut de Chimie Moléculaire

Email: ks09@inbox.ru
法国, Dijon

M. Vorotyntsev

Institute of Problems of Chemical Physics; Mendeleev Institute of Chemical Technology of Russia; Moscow State University; Institut de Chimie Moléculaire

Email: ks09@inbox.ru
俄罗斯联邦, Chernogolovka, Moscow oblast; Moscow; Moscow; Dijon

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