Interfacial tension and wetting behavior of air/oil/ionic liquid systems

Matsukawa, Takashi; Mishima, Yu; Azizian, Saeid; Matsubara, Hiroki; Takiue, Takanori; Aratono, Makoto

doi:10.1007/s00396-007-1732-7

Cited by 21 publications

(30 citation statements)

References 24 publications

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“…The main focus of most studies regarding the surface tension of ionic liquid mixtures has been on the effect of the nature of the ionic liquid or co-solvent (including CMC determinations) and not on temperature effects. This means that, with only a few exceptions, 15,24,33,78,86,88,90,101,105,110,131 most surface tension determinations have been performed only at temperatures near room temperature (293 K or 298 K).…”

Section: Temperature Effectsmentioning

confidence: 99%

Surface tension of ionic liquids and ionic liquid solutions

Tariq

Freire

Saramago³

et al. 2012

Chem. Soc. Rev.

395

360

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Some of the most active scientific research fronts of the past decade are centered on ionic liquids. These fluids present characteristic surface behavior and distinctive trends of their surface tension versus temperature. One way to explore and understand their unique nature is to study their surface properties. This critical review analyses most of the surface tension data reported between 2001 and 2010 (187 references).

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Section: Temperature Effectsmentioning

confidence: 99%

Surface tension of ionic liquids and ionic liquid solutions

Tariq

Freire

Saramago³

et al. 2012

Chem. Soc. Rev.

395

360

View full text Add to dashboard Cite

show abstract

“…Values for these properties for a variety of commonly used ionic liquids and nanoparticles are available in the literature. 116 From eqn (2)-(5) we can see that the electrostatic and van der Waals interactions are computed as a function of the distance (d) between neighboring particles. 115 The value for v e is typically around 3 Â 10 15 s À1 for ionic liquids.…”

Section: Electrostatic Interactions and Van Der Waals Interactionsmentioning

confidence: 99%

“…115 The value for v e is typically around 3 Â 10 15 s À1 for ionic liquids. 116 From eqn (2)-( 5) we can see that the electrostatic and van der Waals interactions are computed as a function of the distance (d) between neighboring particles. The distance (d) can be calculated via the nanoparticle size and concentration, parameters related to physicochemical properties of each ionic liquid (e,n,v e ), and environment temperature (T).…”

Section: Electrostatic Interactions and Van Der Waals Interactionsmentioning

confidence: 99%

Nanoparticles in ionic liquids: interactions and organization

Alexandridis

2015

Phys. Chem. Chem. Phys.

326

221

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Ionic liquids (ILs), defined as low-melting organic salts, are a novel class of compounds with unique properties and a combinatorially great chemical diversity. Ionic liquids are utilized as synthesis and dispersion media for nanoparticles as well as for surface functionalization. Ionic liquid and nanoparticle hybrid systems are governed by a combined effect of several intermolecular interactions between their constituents. For each interaction, including van der Waals, electrostatic, structural, solvophobic, steric, and hydrogen bonding, the characterization and quantitative calculation methods together with factors affecting these interactions are reviewed here. Various self-organized structures based on nanoparticles in ionic liquids are generated as a result of a balance of these intermolecular interactions. These structures, including colloidal glasses and gels, lyotropic liquid crystals, nanoparticle-stabilized ionic liquid-containing emulsions, ionic liquid surface-functionalized nanoparticles, and nanoscale ionic materials, possess properties of both ionic liquids and nanoparticles, which render them useful as novel materials especially in electrochemical and catalysis applications. This review of the interactions within nanoparticle dispersions in ionic liquids and of the structure of nanoparticle and ionic liquid hybrids provides guidance on the rational design of novel ionic liquid-based materials, enabling applications in broad areas.

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“…Such a side by side arrangement has been reported with respect to the adsorbed films of imidazorium ionic liquids having BF4 -as their counter ion on the basis of the results of the sum frequency generation method applied to the adsorbed film, 19 the phase diagram of adsorption of an ionic liquid and alcohol mixture, 22 and the surface properties of neat ionic liquids. 23 Therefore, it is an important issue to get information on the location of Br -at the air/water interface and then on the difference of distributions at the interface among counter ion species. An examination of hydration state of Brusing the XAFS method is expected to be advantageous on this important issue.…”

Section: Resultsmentioning

confidence: 99%

“…15 Actually many reports have been published with respect to surface properties and structures not only of neat ILs but also of their aqueous solutions. [16][17][18][19][20][21][22][23][24][25] Nevertheless, researches on the surface properties and structures of IL systems are not satisfactory but rather have just started in these last few years. The present study was performed with a view to elucidating the adsorption of 1-decyl-3-methylimidazolium bromide (DeMIMB), a typical of IL, at the air/water surface from the viewpoints of the macroscopic thermodynamic quantity such as surface excess concentration and the molecular level structure such as the coordination number of bromide ions.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of 1-Decyl-3-methylimidazolium Bromide and Solvation Structure of Bromide at the Air/Water Interface

et al. 2008

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The adsorbed film of 1-decyl-3-methylimidazolium bromide (DeMIMB) at the air/water interface was investigated employing the surface tension measurement and the x-ray absorption fine structure method under the total reflection condition (TRXAFS). From the surface tension measurement, the surface excess concentrations of ions were determined. From the XAFS measurement, two solvation states of bromide ion were found in the adsorbed film, which were assigned to be "free-Br" and "bound-Br". The hydration number of the former was estimated to be 6 while that of the latter was estimated to be 4. The results based on the XAFS analysis provided significant information on the formation of domains in the adsorbed film; the most conceivable situation is that the adsorbed molecules are definitely not homogeneously dispersed, but domains (islands or clusters) are dispersed in the adsorbed film. A regular and rather tight stacking of immidazolium rings may be formed in the domains.

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Interfacial tension and wetting behavior of air/oil/ionic liquid systems

Cited by 21 publications

References 24 publications

Surface tension of ionic liquids and ionic liquid solutions

Surface tension of ionic liquids and ionic liquid solutions

Nanoparticles in ionic liquids: interactions and organization

Adsorption of 1-Decyl-3-methylimidazolium Bromide and Solvation Structure of Bromide at the Air/Water Interface

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