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| 研究生： |
林純瑜 Chun-Yu Lin |
|---|---|
| 論文名稱： |
非旋光性棒狀分子添加於膽固醇型液晶之螺旋節距研究 The Study of The Helical Pitch of Cholesteric Liquid Crystals by Introducing Achiral Rod-like Molecules |
| 指導教授： |
李俊毅
Jiunn-Yih Lee |
| 口試委員: |
陳志堅
Jyh-Chien Chen 邱顯堂 Hsien-Tang Chiu |
| 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： | 2012 |
| 畢業學年度： | 100 |
| 語文別： | 中文 |
| 論文頁數： | 66 |
| 中文關鍵詞： | 膽固醇型液晶 、非旋光性分子 、螺旋節距 |
| 外文關鍵詞： | cholesteric liquid crystal, achiral molecules, helical pitch |
| 相關次數： | 點閱：149 下載：1 |
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設計並合成非旋光性棒狀酯基化合物4-n-octyloxybiphenyl-4′-octyloxybenzoate ，此化合物類似4-octyloxyphenyl 4-octyloxybenzoate，預期能有像是旋光物質的特性。 n-4′-methoxybenzylidene-n-butylaniline(MBBA)也是一非旋光性棒狀分子，沒有構形上的旋光性。兩化合物分別添加於數種膽固醇型液晶混合且常溫下具有液晶相的膽固醇型液晶，發現摻有4-n-octyloxybiphenyl-4′-octyloxybenzoate的膽固醇型液晶其螺旋節距傾向變長。另一化合物MBBA加入膽固醇型液晶則傾向使螺旋節距變短，其特性猶如旋光性分子添加於膽固醇型液晶中一樣。
To design and synthesize achiral rod-like ester compounds, 4-n-octyloxybiphenyl-4′-octyloxybenzoate. The compound is similar to 4-octyloxyphenyl 4-octyloxybenzoate, which could provide expectantly with effects like chiral materials. n-4′-methoxybenzylidene-n-butyl aniline(MBBA) is also an achiral rod-like molecular, which is not chiral in terms of conformation. Two compounds were added in a mixture with several types of cholesteric liquid crystals that are in liquid crystal phase at room temperature, and it was found that the helical pitch of cholesteric crystal that were mixed with 4-n-octyloxybiphenyl-4′- octyloxybenzoate inclined to become longer. The other compound, MBBA, added in cholesteric liquid crystal have the inclination to make helical pitch shorter. The feature is the same as chiral molecular added in cholesteric liquid crystal.
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