Inclusion of the Fouml;rsterhyphen;rate orientation factor into the theory of concentration selfhyphen;quenching by statistical traps

摘要

The incorporation is studied of the orientation factor occurring in the complete Fouml;rster rate of incoherent energy transfer, into the theory of concentration selfhyphen;quenching by statistical pairs of luminescent molecules. Within Burshteinrsquo;s theory of hopping transport, exact results for the steady state donor fluorescence yield and emission anisotropy are obtained for threehyphen;dimensional systems. Two opposite limits to treat the orientations of the molecular transition dipoles within statistical pairs are considered, and it appears that in both cases the fluorescence yield is substantially influenced by inclusion of the orientation factor into the transfer kinetics.