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技術學刊 EIScopus

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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OrganosiloxaneClearing temperatureRoom temperature liquid crystalEIScopusTSCI
出刊日期 201203

中文摘要

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。

英文摘要

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.

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