ABSTRACT
Photoinduced energy and charge transfer events in biological
and material functional systems are often ultrafast and involve
delocalized excitations-that is, molecular excitons-and strong
electron-vibration (vibronic) coupling effects which necessitate a
nonperturbative treatment. The ultrafast nature of these processes
is a result of nonadiabatic interactions by which electronically
excited states undergo nonradiative transfer and decay processes.
Examples include biological systems like chromophore-protein
complexes, natural and artificial light-harvesting systems, organic
materials like semiconducting polymers, and various other mole-
cular assemblies. A number of studies involving these and related
systems are presented in this volume.
