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Behavior of “proton sponge” in water-containing reverse micelles

✍ Scribed by Elisabeth Bardez; Bernard Valeur

Publisher
Elsevier Science
Year
1987
Tongue
English
Weight
433 KB
Volume
141
Category
Article
ISSN
0009-2614

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✦ Synopsis

Proton sponge (bis( 1,8-dimethylamino)naphthalene) is solubihzed in its neutral form in heptane and in its protonated form in the aqueous core of reverse micelles of AOT (sodium bis( 2-ethylhexyl)sulfosuccinate). Partition between the heptane phase and the water pools has been quantitatively analyzed by spectrophotometry at various concentrations of proton sponge and as a function of water content of the micelles. The results show that the pseudophase model is valid and reveals a strong solubiliiation effect due to the presence of surfactant. In addition, proton sponge permits determination "in situ" of the acidity in the water pool.

' Unite associee au CNRS No. 1103, "Physic0-Chimie Appliquee".

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