title: Fine tuning of the catalytic effect of a metal-free porphyrin on the homogeneous oxygen reduction.
abstract: The catalytic effect of tetraphenylporphyrin on the oxygen reduction 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.
authors.affiliation: J. Heyrovský Institute of Physical Chemistry of ASCR, v.v.i, Dolejškova 3, 182 23 Prague 8, Czech Republic.
authors.forename: Antonín
authors.initials: A
authors.lastname: Trojánek
authors.forename: Jan
authors.initials: J
authors.lastname: Langmaier
authors.forename: Jakub
authors.initials: J
authors.lastname: Šebera
authors.forename: Stanislav
authors.initials: S
authors.lastname: Záliš
authors.forename: Jean-Michel
authors.initials: JM
authors.lastname: Barbe
authors.forename: Hubert H
authors.initials: HH
authors.lastname: Girault
authors.forename: Zdeněk
authors.initials: Z
authors.lastname: Samec