Supramolecular catalytic systems based on anionic amphiphiles and polyethyleneimine for hydrolytic cleavage of phosphorus ester bonds |
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| Authors: | L Ya Zakharova F G Valeeva A R Ibragimova M A Voronin L A Kudryavtseva V V Syakaev E Kh Kazakova Yu E Morozova N A Makarova N B Mel’nikova O E Zemnyakova A I Konovalov |
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| Institution: | (1) A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Research Center of the Russian Academy of Sciences, 8 ul. Akad. Arbuzova, 420088 Kazan, Russian Federation;(2) Kazan State Technological University, 68 ul. K. Marksa, 420015 Kazan, Russian Federation;(3) Nizhny Novgorod State Medical Academy, 10/1 pl. Minina, 603600 Nizhny Novgorod, Russian Federation |
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| Abstract: | Self-organization in individual and binary systems based on polyethyleneimine (PEI) and amphiphilic sulfonatocalix4]resorcinarene
was studied by conductometry, tensiometry, dynamic light scattering, and 1H NMR spectroscopy. The critical concentrations of micelle formation and aggregate sizes were determined. The enhancement
of the catalytic effect on the hydrolysis of O-ethyl O-p-nitrophenyl chloromethylphosphonate was shown in the following series of the systems: PEI-water < PEI—calixarene-water <
PEI—calixarene—LaIII—water.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 2, pp. 366–373, February, 2008. |
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| Keywords: | amphipilic sulfonatocalix[4]resorcinarenes polyethyleneimine lanthanum ions self-organization esters of phosphorus acids hydrolysis kinetics supramolecular catalysis |
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