UNIGE document Scientific Article
previous document  unige:5378  next document
add to browser collection
Title

Molecular electrocatalysis for oxygen reduction by cobalt porphyrins adsorbed at liquid/liquid interfaces

Authors
Su, B.
Hatay, I.
Trojanek, A.
Samec, Z.
Khoury, T.
Gros, C.
Barbe, JM.
show hidden authors show all authors [1 - 10]
Published in Journal of the American Chemical Society. 2010, vol. 132, p. 2655-2662
Abstract Molecular electrocatalysis for oxygen reduction at a polarized water/1,2-dichloroethane (DCE) interface was studied, involving aqueous protons, ferrocene (Fc) in DCE and amphiphilic cobalt porphyrin catalysts adsorbed at the interface. The catalyst, (2,8,13,17-tetraethyl-3,7,12,18-tetramethyl-5-p-aminophenylporphyrin) cobalt(II) (CoAP), functions like conventional cobalt porphyrins, activating O2 via coordination by the formation of a superoxide structure. Furthermore, due to the hydrophilic nature of the aminophenyl group, CoAP has a strong affinity for the water/DCE interface as evidenced by lipophilicity mapping calculations and surface tension measurements, facilitating the protonation of the CoAP-O2 complex and its reduction by ferrocene. The reaction is electrocatalytic as its rate depends on the applied Galvani potential difference between the two phases.
Identifiers
Full text
Article (Author postprint) (4.3 MB) - document accessible for UNIGE members only Limited access to UNIGE
Structures
Research group Pharmacochimie
Citation
(ISO format)
SU, B. et al. Molecular electrocatalysis for oxygen reduction by cobalt porphyrins adsorbed at liquid/liquid interfaces. In: Journal of the American Chemical Society, 2010, vol. 132, p. 2655-2662. https://archive-ouverte.unige.ch/unige:5378

253 hits

0 download

Update

Deposited on : 2010-03-09

Export document
Format :
Citation style :