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Title

Role of surface potential in the catalytic action of micelles of cationic surfactants with a hydroxyalkyl fragment in the head group.

Authors

Mirgorodskaya, A.; Bogdanova, L.; Kudryavtseva, L.; Lukashenko, S.; Konovalov, A.

Abstract

The surface potential in aqueous micellar solutions of a series of cetyltrialkylammonium bromides containing a hydroxyalkyl fragment in the head group was determined with a spectral probe ( p-nitrophenol). It was found that the catalytic effect exerted by these surfactants in solution on the base hydrolysis of carboxylic acid esters is determined by two factors. First, the charged nucleophile is concentrated at the micelle surface. Second, hydrogen bonding of the substrate with the hydroxyalkyl substituents results in its activation.

Subjects

CATALYSTS; MICELLES; SURFACE active agents; HYDROGEN bonding; CARBOXYLIC acids; ESTERS; HYDROLYSIS

Publication

Russian Journal of General Chemistry, 2008, Vol 78, Issue 2, p163

ISSN

1070-3632

Publication type

Academic Journal

DOI

10.1134/S1070363208020023

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