series differ by the length of the methylene unit of (CH2)n, where n, varied following ascending order from 5 to 10. The molecular structure was characterized by elemental (C, H and N) analysis and spectroscopic methods including Fourier Transform Infrared (FT-IR) and Proton Nuclear Magnetic Resonance (1H NMR). The texture and the phase transition temperatures were investigated by using polarizing optical
                                    已成功合成了一系列新的三亚苯基核心,该核心由六个带有末端乙氧基单元的
苯并噻唑-偶氮的外围臂连接,并表征了其液晶性能。该系列的成员的不同之处在于(CH 2)n的亚甲基单元的长度,其中n按从5到10的升序变化。分子结构通过元素(C,H和N)分析和光谱方法表征包括傅立叶变换红外(FT-IR)和质子核磁共振(11 H NMR)。通过使用偏振光学显微镜(POM)和差示扫描量热法(
DSC)研究了织构和相变温度。具有较短间隔(n = 5)的盘状分子显示出单向性向列相。n = 8-10的较高同系物表现出对映向列相和单向近晶C相。X射线衍射研究进一步证实了近晶C的存在,而没有任何盘状柱状相。