Chemistry, Physics and Technology of Surface, 2014, 5 (1), 64-73.

Acid-base and tautomeric equilibria of fluorescein in mixed micelles of zwitterionic sulfobetaine surfactant with cationic, anionic and nonionic surfactants



N. A. Vodolazkaya

Abstract


Values of “apparent” ionization constants of fluorescein were determined in mixed zwitterionic surfactant micelles – cetyldimethylammoniopropanesulfonate – with cationic, anionic and nonionic surfactants by spectrophotometric method. The tautomerism of both molecular and ionic forms has been found from the absorption spectra of dyes.

Keywords


fluorescein; micelles; absorption spectra of dye; ionization constants

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