研究生: |
吳政隆 Cheng-Long Wu |
---|---|
論文名稱: |
具丁基乳酸旋光性結構之強誘電型液晶合成、物性與光電性質探討 Synthesis, Characterization and Electro-optical Properties of Ferroelectric Liquid Crystalline with a Chiral Structure of Butyl 2-hydroxypropanoate |
指導教授: |
李俊毅
Jiunn-Yih Lee |
口試委員: |
邱士軒
Shih-Hsuan Chiu 王英靖 Ing-Jing Wang |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 材料科學與工程系 Department of Materials Science and Engineering |
論文出版年: | 2011 |
畢業學年度: | 99 |
語文別: | 中文 |
論文頁數: | 100 |
中文關鍵詞: | 矽氧烷 、大傾斜角 、旋轉行為 |
外文關鍵詞: | organosiloxane, large tilt angle, switching behavior |
相關次數: | 點閱:417 下載:0 |
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本文目的為合成具丁基乳酸( Butyl 2-Hydroxypropanoate )之旋光性結構液晶材料,以4'-Hydroxybiphenyl-4-yl 4-Hydroxybenzoate為核心,並在非旋光末端基加上矽氧烷基團,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 Scannin Calorimeter; DSC)、X射線繞射儀(X-ray Diffraction; XRD)、及相關光電實驗進行化合物液晶相的鑑定與討論。最後,對SmC*相之光電性質,如:傾斜角(Tilt Angle)、、旋轉行為(Switching Behavior)等性質進行測量,並對化學結構與光電性質的相互關係進行探討研究,因所研究之液晶光電材料主要應用於反射式元件中,本研究除了量測其光電性質外,並利用反射式模式,進一步觀察其元件是否能控制穿透及反射。
The present paper is a study of the ferroelectric behaviour in liquid crystal materials with butyl 2-hydroxypropanoate. A few novel compounds with large tilt angle have been synthesized, and the mesophases exhibited by them have been compared. The mesophases under discussion were investigated by means of polarizing microscopy, differential scanning calorimetry, X-ray diffraction as well as electro-optical experiments. The influence of the molecular structure on the occurrence of the SmC* phase was investigated. Finally, the electro-optical properties of the SmC* phase, such as tilt angle and switching behavior were also measured. As a consequence, the correlation between their electro-optical properties and chemical structures of these compounds are investigated. Because the main application in cell for reflection, this study measured the electro-optical properties. To observe the cell can control between transmission and reflection.
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