Wajih al-Soufi | University of Santiago de Compostela (original) (raw)

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Papers by Wajih al-Soufi

Molecules

The critical micellar concentration (cmc) is a fundamental property of surfactant solutions. Many... more The critical micellar concentration (cmc) is a fundamental property of surfactant solutions. Many proposed methods for the definition and determination of the cmc from property-concentration plots yield values, which depend on the studied property, on the specific technique used for its analysis and in many cases on the subjective choice of the chosen type of plot and concentration interval. In this focus review, we revise the application of a surfactant concentration model we proposed earlier that defines the cmc directly based on the surfactant concentration. Known equations for the concentration-dependence of different surfactant properties can then be combined with this concentration model and fitted to experimental data. This modular concept makes it possible to determine the cmc and the transition width in a systematic and unambiguous way. We revise its use in the literature in different contexts: the determination of the cmc of surfactants and their mixtures from different pr...

Journal of Agricultural and Food Chemistry, Feb 1, 2002

The potential increase in water solubility of three benzimidazole-type fungicides (thiabendazole,... more The potential increase in water solubility of three benzimidazole-type fungicides (thiabendazole, carbendazim, and fuberidazole) due to complexation with alpha- and beta-cyclodextrins was investigated. Fluorescence emission spectra of the fungicides in the presence of different concentrations of the cyclodextrins were measured. Analysis of these spectra by the method of principal components global analysis (PCGA) yielded precise values for the association constants and the emission spectra of the fungicide-cyclodextrin inclusion complexes. Phase-solubility diagrams confirmed the formation of inclusion complexes between each of the fungicides and beta-cyclodextrin and showed significant increases of their solubilities due to complexation.

Supramolecular Chemistry, 2003

Supramolecular Chemistry, 2002

Http Dx Doi Org 10 1080 1061027031000078211, May 13, 2010

Supramolecular Chemistry, 2003

The complexation of three trihydroxy sodium bile salts--cholate, glycocholate, and taurocholate--... more The complexation of three trihydroxy sodium bile salts--cholate, glycocholate, and taurocholate--and their three related sodium dihydroxy bile salts--deoxycholate, glycodeoxycholate, and taurodeoxycholate--by f-, g-and n-cyclodextrins (f-CD, g-CD and n ...