Self-Association of Octaaminoamide Derivatives of Calix[4]resorcinarene in Aqueous Medium and Efficient Gelation of Aqueous Solution

Author： Kazakova E. Kh. Morozova Yu. E. Prosvirkin A. V. Gubanov E. F. Timoshina T. V. Muslinkin A. A. Habicher W. D. Konovalov A. I.

Publisher： MAIK Nauka/Interperiodica

ISSN： 1061-933X

Source： Colloid Journal, Vol.66, Iss.2, 2004-03, pp. : 153-159

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Abstract

Novel aminoamide calix[4]resorcinarenes with hydrophobic groups of various lengths (methyl group, compounds 1 and 2, and undecyl, compounds 3 and 4) and various peripheral groups (NH₂ group, compounds 1 and 3, and NMe₂, compounds 2 and 4) were synthesized. Surface activity and self-organization of compounds 2, 3, and 4 in aqueous solutions were studied (compound 1 is insoluble in neutral aqueous solution); critical micellization concentrations of these compounds were determined. It was found that compound 3 is an efficient gelator in neutral aqueous solutions. Temperatures of gel–solution transition were determined in relation to the concentration of compound 3. IR spectroscopy data, along with the data on viscometry and tensiometry, allowed us to suggest the qualitative model of gel structure formation.