Angewandte Chemie International Edition · 1998 · 158 citations · 0 references
Natural SciencesBiochemistryChemistryElectrochemistryMolecular PhysicsSpectroscopyCharge Transfer ReactionsElectron Transfer ReactionsOxidation-reduction ReactionsPhotochemistryRedox ChemistryRedox ReactionsCharge Transfer DynamicsElectron TransferElectron Transfer DynamicsElectron Transfer KineticsElectronic CouplingIntermolecular Electron TransferIntervalence Charge TransferIntramolecular Electron Transfer
Radical monocations of symmetrical triarylamines such as 1 show intense intervalence charge-transfer (IV-CT) bands in the NIR spectra. These bands refer to photoinduced degenerate electron transfers (ET) between two amine redox centers. Hush analysis of the IV-CT bands revealed a very strong electronic coupling between the redox centers in 1+ compared to the total reorganization energy for the ET process. This results in a very fast thermal electron transfer.