ABSTRACT

Four new series of ionic liquid crystals derived from imidazole bromonium and benzimidazole bromonium salts with spacer alkyl chain (C_n, n = 2, 4) were synthesised and characterised. The following tests and measurements have been performed: the FT-IR, ¹H-NMR and ¹³C-NMR spectroscopy in addition to a CHN elemental analysis techniques. Both the differential scanning calorimetry and the polarising optical microscopy measurements are applied for the evaluation of liquid crystals properties. The outcome confirms the existence of a smectic A liquid crystalline phase. A Density Functional Theory computations were performed to obtain the shape of the molecular structure that corresponds to the ground-state energy.

摘要

合成并表征了四个新的系列离子液晶，这些离子液晶是由具有间隔烷基链（C _n，n = 2，4）的咪唑溴和苯并咪唑溴盐衍生而来的。除CHN元素分析技术外，还进行了以下测试和测量：FT-IR，¹ H-NMR和¹³ C-NMR光谱。差示扫描量热法和偏振光学显微镜法测量均用于评估液晶性能。结果证实了近晶A液晶相的存在。进行密度泛函理论计算以获得与基态能量相对应的分子结构的形状。