论文部分内容阅读
合成一种在咪唑环C-2上不含酸性质子的新型离子液体,六氟磷酸1,2-二甲基-3-十六烷基咪唑.采用偏光显微镜(polarizing optical microscope,POM)、示差扫描量热法(differential scanning calo-rimetry,DSC)和变温型广角X-射线衍射(wide X-ray diffraction,WXRD)等研究其热致液晶行为,研究该离子液体的液晶结构和自组装过程.结果显示,该疏水性离子液体在加热和冷却过程中呈双向热致液晶行为,存在固-固、固-液晶和液晶-液态3个相转变,其层间距和半峰宽均与温度相关.
A novel ionic liquid containing no acidic protons on imidazole ring C-2 and 1,2-dimethyl-3-hexadecylimidazolium hexafluorophosphate were synthesized. Polarizing microscope (POM) The thermotropic liquid crystal behavior was investigated by differential scanning calorimetry (DSC) and wide-angle X-ray diffraction (WXRD). The liquid crystal structure and self-assembly of the ionic liquid were studied. The results show that the hydrophobic ionic liquid exhibits a two-way thermotropic liquid crystal behavior during heating and cooling. There are three phase transitions of solid-solid, solid-liquid crystal and liquid crystal-liquid phase. The interlayer spacing and half-width are related to temperature.