Columnar Liquid-Crystalline Imidazolium Salts. Effects of Anions and Cations on Mesomorphic Properties and Ionic Conductivities
نویسندگان
چکیده
منابع مشابه
Surfactant properties of ionic liquids containing short alkyl chain imidazolium cations and ibuprofenate anions.
Interfacial tension, electrical conductivity, NMR self-diffusion and DLS experiments have been used to investigate the self-aggregation in water of ionic liquids associating an ibuprofenate anion and 1-alkyl-3-methylimidazolium [C(n)MIm](+) (n = 4, 6, 8) cations. Despite the short alkyl chain on imidazolium cations (n ≤ 8), these ionic liquids exhibit particularly low Critical Aggregation Conce...
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Branched thermotropic liquid crystals were successfully obtained from ionic interactions between hyperbranched polyamidoamine and sodium dodecylsulfate. These complexes present columnar rectangular and lamellar thermotropic mesophases as demonstrated by polarized optical microscopy, differential scanning calorimetry, and small-angle X-ray scattering. The relationships between the structural cha...
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A series of ionic liquids based on five kinds of polycyano 1,1,3,3-tetracyanoallyl anions with 2-substituents having different electron-withdrawing or -donating abilities were prepared. The influence of the chemical modification on their thermal properties, viscosity, ionic conductivity, ion association, and solvatochromic shifts was characterized and compared with the case of previously report...
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ژورنال
عنوان ژورنال: Bulletin of the Chemical Society of Japan
سال: 2007
ISSN: 0009-2673,1348-0634
DOI: 10.1246/bcsj.80.1836