Self-Aggregation and Solubilizing Properties of the Supramolecular System Based on Azobenzenesulfonate Calix[4]arene and CTAB

Abstract

The intermolecular interaction of azobenzenesulfonate calix [4]

Self-Organization and Physicochemical Properties of Aqueous Solutions of the Sodium Salt of Azosulphonate Calix[4]arene

“…Synthesis of sodium salt of para-(sulfophenylazo)calix [4] arene (1) was carried out based on published method [7] with modification of yielding. The data of IR and 1 H NMR spectra of 1 corresponded to the previously published ones.…”

“…The data of IR and 1 H NMR spectra of 1 corresponded to the previously published ones. [7] The self-organization and physicochemical properties of solutions of 1 in the range of dilutions corresponding to the calculated concentrations ranging from 1•10 -10 to 1•10 -1 M were studied by dynamic (DLS) and electrophoretic (ELS) light scattering on a Zetasizer Nano ZSP analyzer (Malvern Instruments, Great Britain), UV spectroscopy (UV/Vis Cary 100 spectrophotometer, Sodium Salt of Azosulphonate Calix [4]arene varies non-monotonously from 6585 to 5.0 µS/cm. Three inflection points are observed on the nonmonotonic concentration dependence plot of χ for aqueous solutions of 1: at 2.5•10 -2 М (Figure 2, inset), which coincides with the system's CMC found by tensiometry, at 1•10 -3 М and 1•10 -5 M (Figure 2).…”

“…[1][2][3][4][5] In the last decade, much attention has been paid to the study of the synthesis methods, properties and applications of azosulfonate calix [4] arenes (ASC) and their derivatives. [6,7] Water-soluble ASC are promising compounds that may have photo-switching properties, [8,9] which allows managing the self-organization and physicochemical properties of the substance in solution. However, the processes of self-organization and physicochemical properties of ASC solutions have not been systematically studied in a wide range of concentrations.…”

Improvement effect of p-sulfonatocalix[4]arene on the performance of the PEG/salt aqueous two-phase system

“…[22][23][24][25] In addition, calixarenes can combine with surfactants to form calixarene-based supra-amphiphiles; the critical micelle concentration of super amphiphiles is several times lower than that of surfactants. [26][27][28][29] However, so far, calixarenes and calixarene-based supra-amphiphiles have not been used to improve the performance of ATPSs.…”

Aggregation of Supramolecular System Based on N-Methyl-D-glucamine Calix[4]resorcinol and CTAB in Aqueous Medium

“…Агрегаты на основе супрамолекулярных амфифилов, напротив, более стабильны в биологических водных средах, поэтому в настоящее время создаются смешанные ансамбли на основе ПАВ и макроциклов, в частности каликс [4]аренов. [15] Поэтому в данной работе комплексом физико-химических и биологических методов были изучены супрамолекулярные амфифилы на основе классического катионного цетилтриметиламмония бромида (ЦТАБ) и каликс [4]резорцина с N-метил-Dглюкаминовым фрагментом на верхнем ободе и сульфонатными группами на нижнем ободе (Рисунок 1). [16] Структура N-метил-D-глюкаминового каликс[4] резорцина (ГКР) позволяет предложить наличие отрицательно заряженного нижнего обода из-за диссоциации сульфонатных групп.…”