On the Concentration Quenching of Fluorescence Polarization

Abstract

Applying Forster’s “excitation master equations” which describe the motion of the excitation energy among the molecules of a solution, an expression is found for the probability $\overline \rho$ _lk that the excitation terminates on the same molecule which served as the absorber of the incident photon. With the quantity $\overline \rho$ _lk we obtain for the emission anisotropy as a function of concentration, the same expression obtained previously for the multilayer model.