Enhanced decay of excited dyes measured by competing charge transfer at the phase boundary of molecular crystals

Abstract

In the present paper, the sensitized charge transfer efficiency of an excited oxacarbocyanine dye absorbed on the surface of a molecular crystal of p-chloranil is measured. It depends on the competing energy transfer to a metal layer due to life time shortening of the excited state. The charge transfer rate constant for this system can be calculated to be kCT = (4 ± 2) × 108 s−1.