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Composition effect on the aggregate/solution interface of a nematic lyotropic liquid crystal

机译：关于向列型液晶的骨料/溶液界面的成分效应

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摘要

Lyotropic nematic liquid crystals (lnlc) have attracted attention due to their resemblance to natural membranes and several technological applications. The effect of tetradecyltrimethyl ammonium chloride (TTAC) in the viscosity of a new lnlc containing also decanol, NaCl and natural lipids, was studied. In this article we study how the concentration of phospholipids, decanol and NaCl affects the bilayer and the liquid crystal/solution interface structures. H-2-NMR quadrupole splittings and longitudinal relaxation times of several deuterated species were measured. Polarized light microscopy, transmission electron microscopy and kinematic viscosity measurements were also obtained. The structure of the bilayer is dominated by the surface charge density of TTAC. Water rotation, translation and ion solvation depend on the charge and distance from the interface. With increasing TTAC, MD predicts hydrocarbon chain inter-digitation and lipid rafts formation. This was rationalized using energy arguments.
机译：因与天然膜的相似性和几种技术应用而引起了润喉甲型液晶（LNLC）。研究了四亚甲基氯化铵（TTAC）在含有癸醇，NaCl和天然脂质的新LNLC的粘度中的作用。在本文中，我们研究了磷脂，癸醇和NaCl的浓度如何影响双层和液晶/溶液界面结构。测量了几种氘代物种的H-2-NMR四极杆分裂和纵向松弛时间。还获得偏振光显微镜，透射电子显微镜和运动粘度测量。双层的结构由TTAC的表面电荷密度主导。水旋转，翻译和离子溶剂取决于界面的电荷和距离。随着TTAC的增加，MD预测烃基相互分数和脂质筏形成。这是利用能源争论合理化的。

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  • 来源
    《RSC Advances》 |2016年第88期|共9页
  • 作者

    Ruiz-Fernandez A. R.; Lopez-Cascales J. J.; Giner-Casares J. J.; Araya-Maturana R.; Diaz-Banose F. G.; Weiss-Lopez B. E.;

  • 作者单位

    Univ Chile Fac Ciencias Dept Quim Casilla 653 Santiago Chile;

    Univ Politecn Cartagena Grp Bioinformat &

    Macromol BioMac Area Quim Fis Aulario 2 Campus Alfonso 13 Murcia 30203 Spain;

    CIC BiomaGUNE Biofunct Nanomat Lab Parque Tecnol San Sebastian Ed Miramon 182 Donostia San Sebastian 20009 Guipuzcoa Spain;

    Univ Talca Inst Quim Recursos Nat Casilla 747 Talca Chile;

    Univ Murcia Fac Quim Dept Quim Fis Campus Espinardo E-30100 Murcia Spain;

    Univ Chile Fac Ciencias Dept Quim Casilla 653 Santiago Chile;

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  • 正文语种 eng
  • 中图分类 化学;
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