The conductivity of the anionic surfactant sodium bis(2-ethylhexyl) sulfosuccinate (AOT) is measured in binary mixed solvent media containing 0.000, 0.080, 0.252, and 0.440 mass fractions of methanol, ethanol, and propan-1-ol at temperatures of 298.15, 308.15, and 318.15 K, separately, within the concentration range of ∼1.89 × 10 −2 to 2.20 × 10 −4 mol•kg −1 . The addition of alcohols separately in water decreases the dielectric constant and solvophobic effect and increases the viscosity of the mixed media in the entire range of investigations. The dissociation of AOT gives rise to a simple cationic sodium ion and a bulky anionic dioctyl sulfosuccinate (DS) ion composed of a hydrophobic tail and a polar head. The conductivity was found to be positively correlated with the dielectric constant, solvophobic effect, and temperature, while it was found to decrease with the increase in viscosity for the given mixed medium. To support the experimental measurement, we performed molecular dynamics (MD) simulations for different mixed media, wherein reasonable agreement was found for the electrical conductivity of AOT. Furthermore, density functional theory (DFT) calculations were performed for the pristine DS and AOT to study their electronic properties in the absence of solutions. It turns out that the electronic conductivity arises in the AOT mixture, supporting the findings of experimental and MD simulations.
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