Ultrafast photochemical reactions in liquids occur on similar or shorter time scales compared
to the equilibration of the optically populated excited state. This equilibration involves the …

1. INTRODUCTION Photoemission from organic molecules originates normally from only the
lowest excited state of a given spin multiplicity, irrespective of the photon energy used for the …

Organic solar cells demonstrate external quantum efficiencies and fill factors approaching
those of conventional photovoltaic technologies. However, as compared with the optical gap …

Molecular systems where several apparently equivalent charge separation pathways exist
upon photoexcitation are presented. They encompass MQn (n≥ 2) architectures, where M is …

Ultrafast photochemical processes can occur in parallel with the relaxation of the optically
populated excited state toward equilibrium. The latter involves both intra-and intermolecular …

Among various excited state molecular interactions, photoinduced charge transfer (CT) and
electron transfer (ET) are the most important fundamental ones underlying most problems in …

It has been proposed that isotope effects could effectively downshift intramolecular
vibrational frequencies of light-harvesting materials, thereby reducing the non-radiative …

Owing to their light-harvesting properties, nickel–bipyridine (bpy) complexes have found
wide use in metallaphotoredox cross-coupling reactions. Key to these transformations are Ni …

The ultrafast photodynamics of porphyrin− fullerene dyads in which the distance between
the porphyrin and C60 moieties is varied systematically at close proximity has been …

To access the intrinsic, diffusion free, rate constant of bimolecular photoinduced electron
transfer reactions, fluorescence quenching experiments have been performed with 14 …