Yakubovska G. Protolytic equilibria and phophysical properties of functionalized xanthenes and some other dyes in organized solutions

Investigated objects: asid-base turning oforganic dyes in organized solutions of surfactants. Purpose: to set up the basic principle of the influence of organized solutions on the acid-base properties and absorption and emission spectra of amino- and hydroxyxanthene dyes and dinitrophenols in organized solutions; to recommend the acid-base indicators useful for determining of the electrical surface potential of micelles and microemulsions. Methods: spectrophotometry, spectrofluorimetry, potentiometry. The principles of the influence of fifteenth liophylic colloid systems on the acid-base and spectral properties of twelve dyes series of amino- and hydroxyxanthene and dinitrophenols has been studied. These dyes has been applied for determine the values of the electrical surface potential of micellar interfaces. The optimal surface indicator for determining of electrical surface potential of any pseudophase was recommended. The peculiarites of influence of mixed anion-nonionic micelles on protolytic equilibria of aminoxanthene dyes with type of charge +/? has been found out. There is the influence of size of hydrocarbon radical and position of functional groups in moleculas of dyes even in condition of complete binding of hydrophobical fluoresceins and dinitrophenols. The compare of data of protolytic equilibria hydrophobical fluoresceins has been done. There is breach of classic electrostatic model has been found out. Degree of application: the results are used in time of execution national budget topics and dissertation works of chair of physical chemistry and further work of publications autors.