Abstract

Singlet exciton motion and annihilation (fusion) in molecular solids have been the subject of much experimental and theoretical work. Previous time-resolved fluorescence studies have resulted in several microscopic theories and pictures of such processes.^1,2 Our data, however, is the first to show direct evidence of the microscopic detail and discrete nature of these dynamical processes. These measurements were performed using subpicosecond time-resolved absorption spectroscopy.

© 1986 Optical Society of America