The partitioning of primary alcohols into the aggregates of gemini amphiphiles determined from diffusion NMR experiments.

The partition constants (-values) of primary alcohols in solutions containing aggregates of symmetric gemini surfactants of the family ,'-dimethyl, -dialkyl-,-alkanediammonium dibromide (m-s-m = symmetric gemini surfactants) have been computed from the measured values of their diffusion coefficients obtained from NMR-diffusion experiments. From the -values, both mole-fraction and concentration-based partition coefficients and Gibbs energies of transfer for the alcohols from the bulk DO phase to the gemini aggregate phase have been calculated. As expected, the Gibbs energy of transfer decreased linearly with an increase in the alcohol carbon length for each of the primary alcohol/gemini amphiphile series studied.