Time Dependence of Anisotropy of Frequency-Unshifted Fluorescence of Randomly Oriented Nonrotating Bichromophore Molecules with Identical or Similar Chromophores. I

摘要

Expressions are obtained and analyzed for the time dependence of anisotropy of the frequency-unshifted fluorescence of bichromophore molecules excited by a short light pulse with the frequency close to the frequency of purely electronic transitions of chromophores from the ground state to the first excited state. This dependence reveals a number of new special features caused by the difference in the energies of resonance levels of the chromophores and by the influence of the dynamic and dissipative interaction between them.