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  • Evidence against the hopping mechanism as an important electron transfer pathway for conformationally constrained oligopeptides.

Evidence against the hopping mechanism as an important electron transfer pathway for conformationally constrained oligopeptides.

Journal of the American Chemical Society (2005-01-13)
Federico Polo, Sabrina Antonello, Fernando Formaggio, Claudio Toniolo, Flavio Maran
RESUMEN

The rate constant of intramolecular electron transfer through oligopeptides based on the alpha-aminoisobutyric acid residue was determined as a function of the peptide length and found to depend weakly on the donor-acceptor separation. By measuring the electron-transfer activation energy and estimating the energy gap between donor and bridge, we were able to discard the electron hopping mechanism.

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4-Cyanobenzoic acid, 99%