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Liquid Crystals and their Application
Russian Journal Zhidkie kristally i ikh prakticheskoe ispol'zovanie Жидкие кристаллы и их практическое использование |
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Zhidk. krist. ikh prakt. ispol'z. = Liq. Cryst. and their Appl., 2008, 2, 54—62. |
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Supramolecular Catalytic Systems Based on the Alkylated Polyethyleneimine, Cationic Surfactants and Calix[4]Arene
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E. P. Zhiltsova, Yu. I. Abdyusheva, S. S. Lukashenko, E. M. Kasymova, A. R. Kayupov, A. R. Burilov, A. P. Timosheva, L. A. Kudryavtseva
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Author affiliations
A. E. Arbuzov Institute of Organic and Physical Chemistry
Kazan Scientific Center of the Russian Academy of Sciences
420088 Kazan, Akad. Arbuzova Str., 8.
E-mail: Zhiltsova@iopc.knc.ru
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Abstract
The aggregation and the catalytic properties of the systems based on the alkylated polyethyleneimine, cationic surfactants and calix[4]arene in chloroform have been investigated by dielcometric titration and UV-spectrophotometry methods. The formed mixed aggregates accelerate the process of the interaction of polymer with 4-nitrophenyl-bis(chloromethyl)phosphinate. The catalytic effect depends on the surfactant concentration, the structure of surfactant and the presence of calixarene in solution.
Keywords: dielcometric titration, UV-spectrophotometry, supramolecular catalytic systems, polyethyleneimine, aggregation and the catalytic properties
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