The processes of the energy transfer between ionic dye molecules in model organized molecular systems (polyelectrolytes and micellar solutions) were studied by the laser fluorescence spectroscopy. The possibility of regulation of the efficiency of the energy transfer by reorganization of molecular structure was showed. INTRODUCTIONRecently the investigation of photoprocesses in the organized synthetic structures (ionic micelles, vesicles, linear polyelectrolytes, polymeric gels et a!) , intermolecular interactions of which are formed by hydrophobic and electric forces, have been great interest ,2 Organized synthetic structures like ionic micelle, polymer gels, bilayer and strong polyelectrolytes could be made to represent the biosystems like cell, protoplasm, membrane and NADH, respectfully. Of particular interest in such organized structures are bimolecular processes, especially transfer of electronic excitation and molecular association . Until recently, the structure and properties of such systems were studied only on a macroscopic level. However, the data on microstructure and local dynamic of such systems may provide important information. We believe that, for these purposes, the fluorescent probe technique appears to be very promising. This method involves placing the molecules of a fluorescent compound into a condensed medium and measuring their spectral-luminescence characteristics or effeciency of photophysics processes (for example, electronic excitation energy transfer (EEET)) in probe molecules, which are used to derive information on intermolecular interactions occuring in a system4. This paper presents the results of a study of processes of pre-and after relaxation EEET in aqueous solution of surfactants and polyelectrolyte. EXPERIMENTALThe subjects used in the study were luminescent cationic dyes: Rhodamine 1 10 (RhO), Rhodamine B (RB), Rhodamine 6G(R6G) , and Pyrene (Py) . The surfactants chosen were the anionic sodium dodecyl sulfate (SDS). The fluorescence spectra were recorded with laser spectrofluorimeter consisting of a LGN-503 argon ion and YAGlasers, a MDR-6 monochromator, and FEU-79 photomuiltiplier operating in the photon counting mode. 4. THE ENERGY TRANSFER BETWEEN DYE MOLECULES IN POLYELECTROLYTE SOLUTION 4.1. The processes of adsorption ionic dye molecules on polyelectrolyte (modeling) For the description of physical processes occurring in molecular systems under investigation, modeling the Brounian motion of dye molecules, conformational modification of polymer chains, sorption and desorption polymer and vessel's walls were carried out. The program describes non-inertial causal two-dimensional motional up to 1000 O-8194-2369-61961$6.OO SPIE Vol. 2965 113 Downloaded From: http://proceedings.spiedigitallibrary.org/ on 10/06/2015 Terms of Use: http://spiedigitallibrary.org/ss/TermsOfUse.aspx

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