Computational analysis of water dynamics in AOT reverse micelles

Crowder, Max; Tahiry, Frozan; Rodriguez, Stephanie; Peña, Nathaly; Sharma, Arun K.

doi:10.1016/j.molliq.2023.121340

Cited by 4 publications

(1 citation statement)

References 58 publications

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“…The reorientation processes of water molecules near the interface of the surfactant are affected by the amphiphilic interface and become different with water molecules located in the center of a nanopool. The dynamics of water within a confined environment has been widely studied in the last few decades with various technologies, such as terahertz (THz) dielectric relaxation spectroscopy [6,7] , IR pump probe [8,9] , FT-IR spectroscopy [10] , X-ray diffraction (XRD) [11] , 2D infrared vibrational spectroscopy [12] , and membrane distillation (MD) simulation [13] . Most of these techniques utilize the relationship between electromagnetic wave and intermolecular or intramolecular dipoles of water molecule to obtain dynamic information of water.…”

Section: Introductionmentioning

confidence: 99%

Terahertz spectroscopy of water in nonionic reverse micelles

Zhang,

Yan,

Liu

et al. 2024

中国光学快报

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The dynamics of water within a nanopool of a reverse micelle is heavily affected by the amphiphilic interface. In this work, the terahertz (THz) spectra of cyclohexane/Igepal/water nonionic reverse micelle mixture are measured by THz timedomain spectroscopy and analyzed with two Debye models and complex permittivity of background with volume ratios. Based on the fitted parameters of bulk and fast water, the molar concentration of all kinds of water molecules and hydration water molecule number per Igepal molecule are calculated. We find that slow hydration water has the highest proportion in water when the radius parameter ω 0 < 10, while bulk water becomes the main component when ω 0 ≥ 10. The feature radius ratio of nonhydrated and hydrated water to total water nanopool is roughly obtained from 0.39 to 0.85 with increasing ω 0 .

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