彎曲型氫鍵液晶材料掺雜金奈米粒子表面修飾彎曲型液晶分子之合成與應用

Abstract

本實驗成功合成出硬核中心為單苯環、雙苯環結構的彎曲型氫鍵液晶，除了規劃一系列香蕉型氫鍵液晶系統，以得到一個較寬廣的SmCPF phase 溫寬系統 (SiA-PyBVF14)，再將所得到的彎曲型氫鍵液晶材料掺雜金奈米粒子，而奈米金粒子的表面是受到彎曲型液晶藉由硫醇鍵修飾，透過POM、DSC、XRD及光電量測來探討掺雜金奈米粒子前後的液晶行為。並成功利用電場誘導香蕉型氫鍵液晶具有單方向的規則排列，並由In-Situ 之通電的XRD觀察其排列。

In this research, we successfully synthesized a series of banana-shaped hydrogen-bonded liquid crystalline molecules, containing either single or double-membered benzene rings, in order to obtain broader temperature ranges of SmCPF phase (SiA-PyBVF14). Furthermore, these banana-shaped hydrogen-bonded liquid crystalline molecules were doped with gold nanoparticles, which were surface-modified by banana-shaped liquid crystalline surfactant through thiol bonding. Correspondingly, we investigated the liquid crystalline behavior both before and after doping of nanoparticles by dint of a variety of instruments, such as POM, DSC, XRD and optical-electro measurement. More importantly, we acquired a well-structured liquid crystalline phase by an in-situ electric-field induction monitored through XRD.