Resumen:
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A cyclodextrin derivative (Mod-CD) was synthetized through the monoesterification of b -cyclodextrin with 3-((E)-dec-2-enyl)-dihydrofuran-2,5-dione. The compound is an interesting surfactant which can form big aggregates not only through the interaction of the hydrophobic tails as in common amphiphilic compounds, but also through the inclusion of the alkenyl chain into the cavity of another Mod-CD molecule. The self inclusion of the chain in the cavity of cyclodextrin as well as the intermolecular inclusion was demonstrated by 1H NMR measurements which were able to detect methyl groups in three different environments. Besides, in the aggregates of Mod-CD, the cavity is available to interact with external guests such us phenolphthalein, 1-amine adamantane, and Prodan. Phenolphthalein have the same binding constant with Mod-CD and with b -CD but the equilibrium constan