Supramolecular Catalytic Systems for Decomposition of Toxic Esters of Acids of Phosphorus
T. N. PASHIROVA1, A. Y. ZIGANSHINA1, B. M. KURAKBAY2, V. M. ZAKHAROV2
1Arbuzov Institute of Organic and Physical Chemistry, Russian Academy of Sciences Russia, Kazan, Russia
2Kazan National Research Technological University, Kazan, Russia
Keywords: супрамолекулярный катализ, каликс(4)резорцин, катионное поверхностно-активное вещество, 1,4-диазабицикло(2.2.2)октан, эфиры кислот фосфора, критическая концентрация мицеллообразования, supramolecular catalysis, calix(4)resorcinol, cationic surfactant, 1,4-diazabicyclo(2.2.2)octane, esters of acids of phosphorus, critical micelle concentration
Abstract
Efficient nanocontainers based on noncovalent electrostatic complexes, such as sulfonated calix(4)resorcinol - cationic surfactants (CR - CS) with regulated solubilization and catalytic activity, were developed. Mono-, di-, and tetra-quaternized derivatives of 1,4-diazabicyclo(2.2.2)octane were used as CS. Reaction kinetics for hydrolysis of esters of acids of phosphorus, namely, 4-nitrophenyl-O-ethyl chloromethyl phosphonate, in the presence of CR - CS mixed compositions was studied by UV spectroscopy method during variation in the number of cationic centres of CS and addition of a hydrophobic dye (Orange-OT). Reaction parameters (the specific reaction rate in the micellar phase, substrate binding constant with aggregates, and the critical micelle concentration) attest to the fact that CR - mono-cationic surfactant system has the maximum catalytic activity.
DOI: 10.15372/CSD20180106
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