Supramolecular systems based on polyethyleneimines and octa-2-hydroxyethylated calix[4]resorcinarenes. Aggregation and catalytic activity
- Authors: Pashirova T.N.1, Zhil´tsova E.P.1, Lukashenko S.S.1, Gibadullina E.M.1, Burilov A.R.1, Zakharova L.Y.1, Konovalov A.I.1
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Affiliations:
- A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences
- Issue: Vol 65, No 5 (2016)
- Pages: 1272-1277
- Section: Full Articles
- URL: https://journals.rcsi.science/1066-5285/article/view/238118
- DOI: https://doi.org/10.1007/s11172-016-1447-3
- ID: 238118
Cite item
Abstract
The aggregation of octa-2-hydroxyethylated calix[4]resorcines (CR) with different alkyl chain length (R = Et, n-C5H11, n-C11H23), hydrophobically modified polyethyleneimine (HPEI) and their mixed systems was investigated by the tensiometry and dynamic light scattering in water and water-organic solvents at different temperatures. The critical aggregation concentration (CAC) and the size of aggregates were determined. It was established that the temperature affects significantly the surface and aggregation properties of the CR. The hydrolysis of 4-nitrophenyl-О-butylchloromethyl phosphonate was investigated in the presence of CR, HPEI, and their mixed systems by spectrophotometry. The parameters of the reaction (rate constant in the micellar phase, binding constant of the substrate with aggregates, and CAC) testify that the catalytic activity of the HPEI system in the presence of СR with undecyl radicals is the highest.
About the authors
T. N. Pashirova
A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences
Author for correspondence.
Email: tatyana_pashirova@mail.ru
Russian Federation, 8 ul. Arbuzova, Kazan, 420088
E. P. Zhil´tsova
A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences
Email: tatyana_pashirova@mail.ru
Russian Federation, 8 ul. Arbuzova, Kazan, 420088
S. S. Lukashenko
A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences
Email: tatyana_pashirova@mail.ru
Russian Federation, 8 ul. Arbuzova, Kazan, 420088
E. M. Gibadullina
A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences
Email: tatyana_pashirova@mail.ru
Russian Federation, 8 ul. Arbuzova, Kazan, 420088
A. R. Burilov
A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences
Email: tatyana_pashirova@mail.ru
Russian Federation, 8 ul. Arbuzova, Kazan, 420088
L. Ya. Zakharova
A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences
Email: tatyana_pashirova@mail.ru
Russian Federation, 8 ul. Arbuzova, Kazan, 420088
A. I. Konovalov
A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences
Email: tatyana_pashirova@mail.ru
Russian Federation, 8 ul. Arbuzova, Kazan, 420088