LAUSR

Methods of absorption and fluorescence spectroscopy and, in some cases, small angle X-ray scattering, are used to study solubilization and supramolecular organization of octa[(4'-benzo-15-crown-5)-oxy]phthalocyanines (Pc), H2cr8Pc, and Mgcr8Pc in an aqueous medium in the presence of polyelectrolytes, sodium polystyrene sulfonate, and sodium carboxymethyl cellulose or their mixtures with anionic surfactants: sodium dodecyl benzene sulfonate and sodium deoxycholate. The obtained results indicate the appearance of a monomeric, fluorescent state of Mgc8Pc in the presence of sodium polystyrene sulfonate and at the further increase in its concentration with an increase in the solution ionic strength and addition of anionic sodium deoxycholate. In all cases, the monomeric state of Mgcr8Pc is confirmed by the data of fluorescence spectroscopy. Photobleaching of Mgcr8Pc solubilized in the monomer form is observed in aqueous micellar solutions of sodium dodecylsulfate and sodium dodecyl benzene sulfonate. In the presence of PSS/NaCl, aqueous solutions of Mgcr8Pc were also studied using dynamic light scattering and small-angle X-ray scattering.