Acid-base and tautomeric equilibria of fluorescein dyes in water micellar solutions of zwitterionic sulfobetaine surfactant

Ionization constants of fluorescein and six its derivatives in water micellar solutions of zwitterionic surfactant, N -cetyl- N,N -dimethyl-3-ammonium-1-propanesulfonate were evaluated spectrophotometrically. On the basis of absorption spectra of dyes conclusions concerning the tautomerism of molecu...

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Bibliographic Details
Published in:Russian journal of general chemistry 2009-07, Vol.79 (7), p.1437-1445
Main Authors: Vodolazkaya, N. A., Shakhova, P. V., Mchedlov-Petrosyan, N. O.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
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Summary:Ionization constants of fluorescein and six its derivatives in water micellar solutions of zwitterionic surfactant, N -cetyl- N,N -dimethyl-3-ammonium-1-propanesulfonate were evaluated spectrophotometrically. On the basis of absorption spectra of dyes conclusions concerning the tautomerism of molecular and ionic forms were made and the relationships between the p K a values were explained.
ISSN:1070-3632
1608-3350
DOI:10.1134/S1070363209070068