Competitive inhibition of a metal-free porphyrin oxygen-reduction catalyst by water

Competitive inhibition of a metal-free porphyrin oxygen-reduction catalyst by water

A stopped-flow method is used to study the effects of water and reactant acid anion TB(-) = tetrakis(pentafluorophenyl)borate on the homogeneous oxygen reduction catalyzed by the protonated tetraphenylporphyrin. Observed competitive inhibition of the catalyst is linked to the DFT free energy of extr...

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Veröffentlicht in:Chemical communications (Cambridge, England) England), 2012-04, Vol.48 (34), p.4094-4096
Hauptverfasser: Trojánek, Antonín, Langmaier, Jan, Záliš, Stanislav, Samec, Zdeněk
Format: Artikel
Sprache:eng
Schlagworte:
Anions
Catalysts
Extraction
Free energy
Inhibition
Porphyrins
Reduction
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Beschreibung
Zusammenfassung:A stopped-flow method is used to study the effects of water and reactant acid anion TB(-) = tetrakis(pentafluorophenyl)borate on the homogeneous oxygen reduction catalyzed by the protonated tetraphenylporphyrin. Observed competitive inhibition of the catalyst is linked to the DFT free energy of extraction of O(2), water, and TB(-) from the porphyrin complex.
ISSN:1359-7345
1364-548X
DOI:10.1039/c2cc31082a