篇名 | 室溫型強誘電性液晶之合成 |
---|---|
卷期 | 27:1 |
並列篇名 | Synthesis of Novel Siloxane Room Temperature Liquid Crystalline |
作者 | 吳政隆 、 廖健同 、 李俊毅 |
頁次 | 037-044 |
關鍵字 | 矽氧烷 、 澄清點溫度 、 室溫型液晶 、 Organosiloxane 、 Clearing temperature 、 Room temperature liquid crystal 、 EI 、 Scopus 、 TSCI |
出刊日期 | 201203 |
此篇文章目的為合成室溫型含矽氧烷之液晶材料,以 4'-hydroxybiphenyl-4-yl 4-hydroxybenzoate 為核心,在旋光基的選擇上使用了butyl 2-hydroxypropanoate,
並在非旋光末端基加上矽氧烷,並對矽氧烷是否影響液晶相轉移行為及液晶相進行研究觀察。在實驗中利用偏光顯微鏡 (polarizing optical microscope,POM)、示差掃描式卡計 (differential scanning calorimeter, DSC)、X射線繞射儀 (X-ray diffraction, XRD) 進行化合物液晶相的鑑定與討論,發現該液晶澄清點溫度有下降的趨勢,並具有寬廣的液晶相溫度範圍,並於文中進一步探討該液晶結構對於液晶相 (SmC*) 的影響。
This article’s goal was to analyze the synthesis of room temperature
liquid crystal materials with low molar mass organosiloxane. The structures contain 4'-hydroxybiphenyl-4-yl 4-hydroxybenzoate core and chiral butyl 2-hydroxypropanoate unit, and organosiloxane on the end of the achiral molecules. A few novel series of room temperature compounds
were synthesized, and the mesophases exhibited by them were compared.
The mesophases under discussion were investigated using polarizing
microscopy, differential scanning calorimetry, and X-ray diffraction. The
substituent had a strong influence in reducing the clearing temperatures and increasing temperature range. The influence of the molecular structure on the occurrence of the SmC* phase was investigated in the article.