FLUORESCENCE SPECTROSCOPY OF UNIAXIALLY ORGANIZED MOLECULAR MEDIA - STATE-DEPENDENT FLUOROPHORE-MATRIX ALIGNING INTERACTIONS

A description of time-resolved polarized fluorescence spectroscopy on the fluorophores incorporated into uniaxially organized molecular medi a and undergoing different ground- and excited-state aligning interact ions, is discussed. The excited-state aligning-potential-restricted ro tational diffusion model is considered. From the solution of the motio n equation the time-evolution of even and odd higher-rank molecular or der parameters can be recovered. This enables more precise reconstruct ion of the angular distribution of fluorophores aligned in electric fi eld, adsorbed at the solid(liquid)/air surfaces and at the solid(liqui d)/liquid interfaces and also aligned in membranes, liquid crystals an d Langmuir-Blodgett films. (C) 1998 Elsevier Science B.V.