A Fourier transform pulsed-gradient spin echo nuclear magnetic resonance self-diffusion study of microemulsions and the droplet size determination

Fedotov, V. D.; Zuev, Yu. F.; Archipov, V. P.; Idiyatullin, Z. Sh.; Garti, Nissim

doi:10.1016/s0927-7757(97)03900-9

Cited by 25 publications

(19 citation statements)

References 28 publications

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“…(1) for correct calculations of R M only for dilute dispersions, when the medium viscosity is close to that of the pure solvent. Earlier it was shown [17] that it is possible to determine the micelle radius in rather concentrated dispersions with the help of a simple equation on the basis of the Stokes-Einstein relations written for the micelles and solvent molecules:…”

Section: Self-diffusion Datamentioning

confidence: 99%

Effects of solubilized dodecylamine on the microstructure of cetylpyridinium bromide-n-butanol-hexane-water system studied by pulsed-gradient spin echo NMR and ESR spin label methods

et al. 2003

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The effect of solubilized dodecylamine (DDA) on the structure of the cetylpyridinium bromide-n-butanol-hexane-water microemulsions has been studied by the Fourier-transform pulsed-gradient spin-echo ~H nuclear magnetic resonance and the electron spin resonance spin label method. The sample compositions were chosen to examine three different microemulsion structures: oil-in-water, water-in-oil and bicontinuous. In all systems the DDA mo|ecules are shown to be incorporated into the oil-water interface, resulting in essential changes in the microemulsion structure. In the micellar systems the DDA emergence in the interface causes an increase of the micelle size and a redistribution of butanol and water between micelle and bulk phases. In the oil-in-water mir of amine-containing systems the quantity of micellized butanol and water decreases. In the water-in-oil microemulsions the introduction of DDA leads to an increase of butartol and water involved in the micelle formation. The redistribution of butanol and water between polar and organic phases in the microemulsions would be expected to cause changes in the bicontinuous structure.

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Section: Self-diffusion Datamentioning

confidence: 99%

Effects of solubilized dodecylamine on the microstructure of cetylpyridinium bromide-n-butanol-hexane-water system studied by pulsed-gradient spin echo NMR and ESR spin label methods

et al. 2003

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“…To all appearance this fact is due to the (2), and P -(3) on hydratation power ω formation of large aggregates from micelles, so the micellar association takes place. The possibility of aggregates formation through the collisions in the reversed micelles systems is discussed also in [13,14].…”

Section: Results and Analysismentioning

confidence: 99%

Fluorescence saturation of dye molecules in water pools of reversed micelles

Потапов

Saletsky²

2005

Laser Phys. Lett.

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Rhodamine 6G has been used as a fluorescence probe in AOT reversed micelles systems with the different amounts of solubilized water (hydratation power ω). The saturation of fluorescence and the lifetime of dye molecules were measured. The absorption cross section values were calculated from the saturation curves. We showed the differences in values of the absorption cross section, lifetime and velocity of fluorescence saturation in micellar phase with different ω and in comparison to bulk phase. Additionally, the structure of hydrated reversed micelles has been studied by the method of correlation spectroscopy. The influence of ω on size and shape of micelles was detected.

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“…Its values are sensitive to friction, obstruction and solvatation phenomena, but in particular to confinement in closed domains. They can therefore be used to obtain information on solution microstructure (Fedotov et al, 1996;Yaghmur et al, 2003). Figure 9 shows the values of self-diffusion of bnPyrNTf 2 , TX-100 and toluene as a function of the total volume fraction of TX-100 and IL along dilution line (a) for samples 2, 3 and 4 in Figure 8.…”

Section: Structural Studies In the Microemulsion Il/o Region Pgse Nmmentioning

confidence: 99%

“…where D ∞ is the micelle diffusion coefficient at infinite dilution, k is a constant and Φ is the volume fraction of both TX-100 and IL (Fedotov et al, 1996;Nyden, 2001). R h values obtained are summarized in Table 4 for both PGSE NMR and DLS measurements.…”

Section: Structural Studies In the Microemulsion Il/o Region Pgse Nmmentioning

confidence: 99%

Aggregates in Ionic Liquids and Applications Thereof

Marty¹,

Viguerie²

2011

Ionic Liquids: Theory, Properties, New Approaches

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A Fourier transform pulsed-gradient spin echo nuclear magnetic resonance self-diffusion study of microemulsions and the droplet size determination

Cited by 25 publications

References 28 publications

Effects of solubilized dodecylamine on the microstructure of cetylpyridinium bromide-n-butanol-hexane-water system studied by pulsed-gradient spin echo NMR and ESR spin label methods

Effects of solubilized dodecylamine on the microstructure of cetylpyridinium bromide-n-butanol-hexane-water system studied by pulsed-gradient spin echo NMR and ESR spin label methods

Fluorescence saturation of dye molecules in water pools of reversed micelles

Aggregates in Ionic Liquids and Applications Thereof

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