Synthesis and Applications of Hydrogen-Bonded Bent Core Liquid Crystal Hosts Doped with Gold Nanoparticles Decorated with Bent Core Liquid Crystal Surfactants
|關鍵字:||彎曲型液晶;奈米粒子;bent core LC;nanoparticles|
|摘要:||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.
|Appears in Collections:||Thesis|