Electron transfer between cytochrome c and metalloporphyrins at high exothermicities |
| |
| Affiliation: | 1. National Research and Development Institute for Isotopic and Molecular Technologies, Cluj-Napoca, Romania;2. Technical University of Cluj-Napoca, Romania;1. Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, Av. Professor Lineu Prestes, 748, 05513-970 São Paulo - SP, Brazil;2. Department of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom;1. Université de Carthage, Faculté des Sciences de Bizerte, Laboratoire de Chimie des Matériaux (LR13ES08), 7021 Bizerte, Tunisia;2. University of Monastir, Faculty of Sciences, Laboratory of Quantum and Statistical Physics (LR18ES18), Monastir 5079, Tunisia;3. Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226, F-35000 Rennes, France |
| |
| Abstract: | The electron-transfer rates between cytochrome c and the anion radical of two metalloporphyrins ZnTPPS and ZnTPPC (ΔE for the reaction is 1.42eV) have been measured by laser flash spectroscopy. The anion radicals were produced by reaction of the porphyrins with hydrated electrons which resulted from the photoionization of ferrocyanide ions. Together with results obtained previously, a reorganization energy of ≈ 1.1 eV was deduced for the cytochrome c-porphyrin system. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
