External electric fields have been combined with spectroscopic observations to obtain information about charge distributions in molecules and molecular aggregates and to study electronic energy transfer processes. Recent work has centered on electro-optical properties, principally nonphotochemical spectral hole burning and energy transfer and relaxation processes, of molecularly doped polymer films. The research associated with this fellowship was conducted in collaboration with T.E. Madey and R. Stockbauer. Synchrotron radiation was utilized to study the adsorption and desorption of simple molecules and molecular fragments on single crystal metal surfaces under ultrahigh vacuum conditions. Recently work along these lines has been extended to studies of gas phase molecules and to the soft x-ray region of the spectrum using facilities at the National Synchrotron Light Source, Brookhaven National Laboratory.
New work is directed at elucidating soft x-ray induced photochemistry on surfaces and in solids.