Ionic liquid crystalline phases in 3-hexadecylimidazolium bromide and binary mixtures with 1-decanol

Li, Cuihua; He, Juan; Chen, Jiahui; Liu, Jianhong; Zhang, Qianling; Yu, Zhen‐Qiang

doi:10.1016/j.jcis.2011.04.014

Cited by 8 publications

(4 citation statements)

References 22 publications

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“…At high temperatures, the chain tails occupy more free space due to an increase of both the chain motion and the chain conformational disorder resulting in a high degree of interdigitation and hence a decrease of the layer spacing. This temperature dependence of the layer spacing D is consistent with those reported in [35]for the [C16mim][Br] IL crystalline phases. It is important to emphasize that even at high temperature of 120°C there exists a distinct structural peak at low scattering vector q = 0.…”

Section: Structural Studies By Saxs/waxssupporting

confidence: 90%

Triborheology and orientational dynamics of ionic liquid crystals

Pogodina

Amann

Dold

et al. 2014

Journal of Molecular Liquids

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Section: Structural Studies By Saxs/waxssupporting

confidence: 90%

Triborheology and orientational dynamics of ionic liquid crystals

Pogodina

Amann

Dold

et al. 2014

Journal of Molecular Liquids

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“…This is in good agreement with similar structures found in IL systems. [34,[43][44][45] Figure 6. SAXS curve of 85 wt % C 14 mimCl in C 2 mimFeCl 4 .…”

Section: The Lamellar Phase Determined By Saxsmentioning

confidence: 99%

Self‐Assembly of Imidazolium‐Based Surfactants in Magnetic Room‐Temperature Ionic Liquids: Binary Mixtures

2014

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The phase behaviour of binary mixtures of ionic surfactants (1-alkyl-3-imidazolium chloride, C(n)mimCl with n=14, 16 and 18) and imidazolium-based ionic liquids (1-alkyl-3-methylimidazolium tetrachloroferrate, C(n)mimFeCl4, with n=2 and 4) over a broad temperature range and the complete range of compositions is described. By using many complementary methods including differential scanning calorimetry (DSC), polarised microscopy, small-angle neutron and X-ray scattering (SANS/SAXS), and surface tension, the ability of this model system to support self-assembly is described quantitatively and this behaviour is compared with common water systems. The existence of micelles swollen by the solvent can be deduced from SANS experiments and represent a possible model for aggregates, which has barely been considered for ionic-liquid systems until now, and can be ascribed to the rather low solvophobicity of the surfactants. Our investigation shows that, in general, C(n)mimCl is a rather weak amphiphile in these ionic liquids. The amphiphilic strength increases systematically with the length of the alkyl chain, as seen from the phase behaviour, the critical micelle concentration, and also the level of definition of the aggregates formed.

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“…Ionic liquid crystals (ILCs) have become an attractive functional soft material that combine the characteristics of ionic liquid and liquid crystal to exhibit anisotropic structure organization over a range of temperature . It has been reported that the liquid‐crystalline behavior of ILCs depends on the nature of the cations and anions that the ILCs have . Some typical cations ILCs with pyridinium, imidazolium, pyrrolidinium, quaternary ammonium, and quaternary phosphonium salts have been reported, as well as anions ILCs with BF 4 − , PF 6 − , CF 3 SO 3 − , and so on .…”

Section: Introductionmentioning

confidence: 99%

Main‐chain ionic liquid‐crystalline polymers bearing quaternary phosphonium ions

Bai

Tang

Kong

et al. 2018

Polymers for Advanced Techs

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A series of quaternary phosphonium ions-containing main-chain ionic liquid-crystalline polymers with tri-tolylphosphines as cationic groups have been synthesized and characterized. The molecular structures of all compounds have been determined. Test results show that the liquid crystal properties of the polymer, the quaternary phosphonium ions-containing main-chain ionic liquid-crystalline polymers, have lower glass transition temperature and wider liquid-crystalline range, and the BF 4 − and PF 6 − even can make the glass transition temperature drop to more than 10°. The polymers exhibit liquid crystal properties only during temperature rising, the quaternary phosphonium ions-containing main-chain ionic liquid-crystalline polymers show smectic A phase, and the main-chain liquid-crystalline polymers show chiral nematic mesophases. The ionic liquid-crystalline polymers with phosphorus cations show good bactericidal performance, but the anion has no effect on bactericidal properties.

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Ionic liquid crystalline phases in 3-hexadecylimidazolium bromide and binary mixtures with 1-decanol

Cited by 8 publications

References 22 publications

Triborheology and orientational dynamics of ionic liquid crystals

Triborheology and orientational dynamics of ionic liquid crystals

Self‐Assembly of Imidazolium‐Based Surfactants in Magnetic Room‐Temperature Ionic Liquids: Binary Mixtures

Main‐chain ionic liquid‐crystalline polymers bearing quaternary phosphonium ions

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