Issue 19, 2011
From the journal:

Chemical Communications

Fine tuning of the catalytic effect of a metal-free porphyrin on the homogeneous oxygenreduction†

Antonín Trojánek,a   Jan Langmaier,a   Jakub Šebera,a   Stanislav Záliš,a   Jean-Michel Barbe,b   Hubert H. Giraultc  and  Zdeněk Samec*a  

* Corresponding authors

a J. Heyrovský Institute of Physical Chemistry of ASCR, v.v.i, Dolejškova 3, 182 23 Prague 8, Czech Republic
E-mail: zdenek.samec@jh-inst.cas.cz
Fax: +420 286582307
Tel: +420 266052011

b Institut de Chimie Moléculaire de l’Université de Bourgogne, ICMUB (UMR 5260 du CNRS), 9 avenue Alain Savary, BP 47870, 21078 Dijon Cedex, France

c Laboratoire d’Electrochimie Physique et Analytique, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland

Abstract

The catalytic effect of tetraphenylporphyrin on the oxygenreduction with ferrocene in 1,2-dichloroethane can be finely tuned by varying the molar ratio of the acid to the catalyst present in the solution. The mechanism involves binding of molecular oxygen to the protonated free porphyrin base, in competition with ion pairing between the protonated base and the acid anion present.

Graphical abstract: Fine tuning of the catalytic effect of a metal-free porphyrin on the homogeneous oxygenreduction

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Article information

DOI
https://doi.org/10.1039/C1CC11075F
Article type
Communication
Submitted
23 Feb 2011
Accepted
21 Mar 2011
First published
05 Apr 2011

Chem. Commun., 2011,47, 5446-5448

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Fine tuning of the catalytic effect of a metal-free porphyrin on the homogeneous oxygenreduction

A. Trojánek, J. Langmaier, J. Šebera, S. Záliš, J. Barbe, H. H. Girault and Z. Samec, Chem. Commun., 2011, 47, 5446 DOI: 10.1039/C1CC11075F

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