Conformation of the polar part in the AOT inverted micelles. Gadolinium ion-induced spin-lattice relaxation studies

Dynamic Structure and Chirality Effects on 1H and 13C NMR Chemical Shifts for Aerosol OT in Reversed Micelles Assisted by NOESY, ROESY, and 13CT1 Studies

“…Sodium 1,2-bis(2-ethylhexyl) sulfosuccinate (aerosol OT, AOT) is a well-known representative of 2-chain type surfactants, and its solution behavior continues to attract interest. 1 H, 2 H, and 13 C NMR spectra have played an important role in the study of the conformation and dynamics of AOT in its various aggregated structures. − It has been proposed that in organic solvents AOT forms reversed micelles, , which have the ability to solubilize large amounts of water in the polar core. − In particular, for 1 H and 13 C NMR studies, discussion on the molecular conformation 8,9 and dynamics 8,10-13 has previously been focused on the segments in the vicinity of the polar head and the ester groups. Until now, the separate dynamic structures of the two 2-ethylhexyl chains have not been elucidated because assignment of the 1 H and 13 C NMR signals arising from the two chains has remained incomplete.…”

“…1 H, 2 H, and 13 C NMR spectra have played an important role in the study of the conformation and dynamics of AOT in its various aggregated structures. [1][2][3][4][5][6][7][8][9][10][11][12][13] It has been proposed that in organic solvents AOT forms reversed micelles, 1,2 which have the ability to solubilize large amounts of water in the polar core. [3][4][5][6][7] In particular, for 1 H and 13 C NMR studies, discussion on the molecular conformation 8,9 and dynamics 8,[10][11][12][13] has previously been focused on the segments in the vicinity of the polar head and the ester groups.…”

“…[1][2][3][4][5][6][7][8][9][10][11][12][13] It has been proposed that in organic solvents AOT forms reversed micelles, 1,2 which have the ability to solubilize large amounts of water in the polar core. [3][4][5][6][7] In particular, for 1 H and 13 C NMR studies, discussion on the molecular conformation 8,9 and dynamics 8,[10][11][12][13] has previously been focused on the segments in the vicinity of the polar head and the ester groups. Until now, the separate dynamic structures of the two 2-ethylhexyl chains have not been elucidated because assignment of the 1 H and 13 C NMR signals arising from the two chains has remained incomplete.…”