Vapour pressure of ionic liquids

Bier, Markus; Dietrich, S.

doi:10.1080/00268971003604609

Cited by 83 publications

(47 citation statements)

References 19 publications

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“…(12)-(14) below), also a uniform density profile ̺(r r r, ω ω ω) demands a value for d entering into Eq. (14). However, the corresponding results do not depend on such a choice of d; any value d > 0 is valid.)…”

Section: Formalismmentioning

confidence: 91%

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Smectic phases in ionic liquid crystals

Bartsch

Bier

Dietrich

2017

J. Phys.: Condens. Matter

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Ionic liquid crystals (ILCs) are anisotropic mesogenic molecules which carry charges and therefore combine properties of liquid crystals, e.g. the formation of mesophases, and of ionic liquids, such as low melting temperatures and tiny triple-point pressures. Previous density functional calculations have revealed that the phase behavior of ILCs is strongly affected by their molecular properties, i.e. their aspect ratio, the loci of the charges, and their interaction strengths. Here, we report new findings concerning the phase behavior of ILCs as obtained by density functional theory and Monte Carlo simulations. The most important result is the occurrence of a novel, wide smectic-A phase [Formula: see text], at low temperature, the layer spacing of which is larger than that of the ordinary high-temperature smectic-A phase [Formula: see text]. Unlike the ordinary smectic S phase, the structure of the [Formula: see text] phase consists of alternating layers of particles oriented parallel to the layer normal and oriented perpendicular to it.

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Section: Formalismmentioning

confidence: 91%

“…Thus, the coefficients Q i in Eqs. (13) and (14) represent the first coefficients of a Fourier expansion of the spatially periodic function ̺(r r r, ω ω ω). Note, that the factor 2 for w 1 , w 2 , w 4 , and w 5 in Eq.…”

Section: Formalismmentioning

confidence: 99%

Smectic phases in ionic liquid crystals

Bartsch

Bier

Dietrich

2017

J. Phys.: Condens. Matter

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“…1a), whereas S ow(a) < 0 implies otherwise (Fig. 1b) 27 , and therefore they mitigate 20 the concern of the lubricant loss through evaporation. Goniometric measurements of the advancing and receding contact angles of these liquids in the presence of air and water as well as their interfacial tensions were performed and are presented in Tables S1 and S2 (see Supplementary Material).…”

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confidence: 99%

Droplet mobility on lubricant-impregnated surfaces

et al. 2013

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“…Besides the strikingly low melting point, RTILs exhibit a number of remarkable general, i.e., materialindependent, physical properties such as an extremely low vapour pressure [4,5] and a high viscosity at ambient temperature -the lowest viscosity of RTILs at 298 K observed by now, 21 cP for [C 2 mim][N(CN) 2 ] [6], is more than twenty times that of water. All these properties are related to the combination of strong electrostatic and highly anisotropic steric forces.…”

Section: Introductionmentioning

confidence: 99%

Static dielectric properties of dense ionic fluids

Zarubin

Bier

2015

The Journal of Chemical Physics

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The static dielectric properties of dense ionic fluids, e.g., room temperature ionic liquids (RTILs) and inorganic fused salts, are investigated on different length scales by means of grandcanonical Monte Carlo simulations. A generally applicable scheme is developed which allows one to approximately decompose the electric susceptibility of dense ionic fluids into the orientation and the distortion polarization contribution. It is shown that at long range, the well-known plasma-like perfect screening behavior occurs, which corresponds to a diverging distortion susceptibility, whereas at short range, orientation polarization dominates, which coincides with that of a dipolar fluid of attached cation-anion pairs. This observation suggests that the recently debated interpretation of RTILs as dilute electrolyte solutions might not be simply a yes-no-question but it might depend on the considered length scale.

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Vapour pressure of ionic liquids

Cited by 83 publications

References 19 publications

Smectic phases in ionic liquid crystals

Smectic phases in ionic liquid crystals

Droplet mobility on lubricant-impregnated surfaces

Static dielectric properties of dense ionic fluids

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