Catalysis of O-( para-nitrophenyl) O,O-dimethyl thiophosphate decomposition by chromonic mesophases based on polymerized ionic amphiphiles.

Autor: Bakeeva, R. F., Oehme, G., Fuhrmann, H., Zakirova, G. A., Sopin, V. F.
Předmět:
Zdroj: Kinetics & Catalysis; Jan2006, Vol. 47 Issue 1, p1-4, 4p, 1 Diagram, 2 Graphs
Abstrakt: The formation of a nematic chromonic mesophase in aqueous solutions of quaternized poly(ethylene imine) has been found using polythermal polarization microscopy. The reaction kinetics of O-( para-nitrophenyl) O,O-dimethyl thiophosphate hydrolysis has been studied by spectrophotometry, and a comparative analysis of the effects of lyotropic liquid crystals constructed as hexagonal and chromonic mesophases on this kinetics has been performed. It has been found that the hydrolysis of the substrate in a nematic chromonic mesophase is accelerated due to the concentration of the reactants. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index