Mixed anionic and zwitterionic surfactant based microemulsions as vehicles for solubilizing organodiselenides

Spectral and physiochemical behavior of water/sodium bis-(2-ethylhexyl)sulfosuccinate (AOT)/isooctane (ME-I) and water/AOT + lecithin (LC)/isooctane (ME-II) microemulsions has been investigated in the presence of organodiselenides. It was found that the OH, CO and C–O–C FTIR stretching frequency of the formulated microemulsions change with the addition of organodiselenides. Interaction with Acridine Orange (AO) indicates organodiselenide presence at the interface. Estimates of the micropolarities of the microemulsions at different water contents were carried out in terms of an empirical polarity parameter ET(30). The values increase with the increase in ω = [H2O]/[surfactant]. The emission spectra of AO reveal the quenching capacities of the added organodiselenides. The temperature induced percolation process has also been studied. The results indicate a subsequent increase in solubilization of organodiselenide in ME-II as compared to ME-I.

The interactions of organodiselenides with anionic and anionic + zwitterionic microemulsions have been studied by spectroscopic and conductivity techniques. The introduction of lecithin leads to enhanced intake capacity of organodiselenides.Figure optionsDownload as PowerPoint slide