Abstract

In the photochemistry of molecules on a metal or semiconductor, the surface can play a very important role by strongly perturbing, promoting or inhibiting the process.⁽¹⁾ Excitation to repulsive states is an important class of surface photochemical processes as they are: simple, bond specific, produce important reactive radicals, and are fast enough (5 to 100 fs) to largely escape electronic quenching due to surface interactions. However, charge transfer processes are still fast enough to perturb or dominate on this time scale.⁽²⁾

© 1989 Optical Society of America