Acidities and Basicities in Reversed Micellar Systems

  • Omar A. El Seoud
Part of the Forschung Soziologie book series


The determination of the “effective” acidities and basicities in reversed micelles (RM’s) is fundamental for the rationalization of any pH-dependent interaction taking place in the micellar “water pool, WP”. The subject also bears on the basic question of whether reversed micellar catalysis is due, at least partially, to a change in the physico-chemical properties of the reactants when they are solubilized in the WP. A nice example of an enhanced reactivity due to the substrate inclusion in the micellar pseudo-phase is provided by the case of the enzyme a-chymotrypsin. The reactivity of this enzyme in the WP of the anionic surfactant bis(2-ethylhexyl)sodium sulfosuccinate (AOT) is actually higher than it is in water, and the pKa of the enzyme active site is shifted to a higher value1,2.


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Copyright information

© Springer Science+Business Media New York 1984

Authors and Affiliations

  • Omar A. El Seoud
    • 1
  1. 1.Institute de QuimicaUniv. de São PauloSão PauloBrazil

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