Relationship between electron transfer and the structure of a quinone-linked zinc porphyrin with a flexible peptide spacer
Abstract
The solvent-dependent conformational change of the covalently linked porphyrin–peptide–quinone triad 1, as determined by 1H NMR and electronic absorption spectra, obviously reflects an intramolecular electron transfer reaction from the zinc porphyrin to quinone in both polar and nonpolar solvents.