Related Experiment Video
Updated: May 22, 2026

Characterizing Electron Transport through Living Biofilms
Published on: June 1, 2018
Ultrafast photoinduced electron transfer at electrodes: the general case of a heterogeneous electron-transfer
1Department of Chemistry & Biochemistry, University of Delaware, 109 Lammot DuPont Laboratory, Newark, DE 19716, USA. larsg@udel.edu
Abstract:
The general case of a heterogeneous electron-transfer reaction is realized by ultrafast electron transfer from a light-absorbing molecule to a wide continuum of electronic acceptor states, realizing the so-called wide band limit. Experimental data obtained for perylene dye/TiO(2) systems confirm the predictions of fully quantum mechanical model calculations of the dynamics. The energy distribution of the injected electron shows an energy loss due to excitations of high-energy (quantum) vibrational modes in the ionized perylene moiety. The electron-transfer mechanism is non-adiabatic and the reaction is ultrafast, for example, with a time constant of 9 fs for the COOH anchor-bridge group. The underlying strong coupling of the electronic states to high-energy vibrational modes is a characteristic feature of sensitizer molecules.
More Related Videos
Related Concept Videos
Photochemical Electrocyclic Reactions: Stereochemistry
Selection Rules: Photochemical Activation
Thermal and Photochemical Electrocyclic Reactions: Overview
Fast Reactions
The Photochemical Reaction Center
The Z-Scheme of Electron Transport in Photosynthesis
Processes at Electrodes

