具有Benzobisthiazoles和Benzobisoxazoles結構之盤狀液晶材料

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姓名

周龍君(Lung-Chun CHOU) 查詢紙本館藏

畢業系所

化學學系

論文名稱

具有Benzobisthiazoles和Benzobisoxazoles結構之盤狀液晶材料
(Columnar Phases Formed by Heterocyclic Benzobisthiazoles and Benzobisoxazoles)

相關論文

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摘要(中)

設計一系列以benzobisthiazole以及benzobisoxazole為主要結構的液晶分子，利用其芳香雜環為中心硬核期望能在半導體上有所應用，並且在側邊加上六根側鏈基而形成一盤狀液晶。其液晶特性以熱差式分析儀(DSC)、偏光顯微鏡(POM)及粉末X光繞射儀(XRD)進行鑑定，並藉由體積量測方法試圖找出液晶分子排列的方式與規則度。然而在熱穩定性及發光特性上，則以熱重分析儀(TGA)、UV-Vis可見光譜儀、PL放射光譜儀進行測試探討，以期望此實驗的化合物有潛力成為發光電子材料。

摘要(英)

The synthesis, characterization and mesomorphic properties of a series of benzobisthiazole and benzobisoxazole compounds were reported. The mesomorphic properties were studied and investigated by thermal analysis, polarized optical microscopy and powder X-ray diffraction. The results indicated that the compounds appended with six side chains exhibited columnar hexagonal (Colh) and rectangular phase (Colr). In order to better understand the molecular arrangement in columnar mesophases, the molecular volume dilatomery and other parameters were also measured and discussed. Their luminescence properties were also studied by UV-Vis and fluorescence spectrometry.

關鍵字(中)

★ 發光
★ 雜環

關鍵字(英)

★ Benzobisoxazoles
★ Benzobisthiazoles

論文目次

摘要 I
Abstract II
謝誌 III
目錄 IV
圖目錄 VI
表目錄 IX
第一章緒論 1
1-1 盤狀液晶的基本架構以及分類 2
1-2 盤狀液晶材料的應用 5
1-3 Polybenzobisazoles 的應用 13
1-4 OLED與PLED之間的差異 14
1-5 研究動機 15
第二章實驗部分 17
2-1 實驗藥品 18
2-2 儀器設備 20
2-3 實驗流程 26
2-4 實驗步驟 27
第三章結果與討論 34
3-1結果討論 36
3-1-1 元素分析與質譜分析(EA & FAB - MS) 36
3-1-2 熱分析數據與偏光紋理圖 37
3-1-2-1 化合物trans-Bt-Cn之熱分析數據比較與偏光紋理圖 37
3-1-2-2 化合物cis-Bo-Cn之熱分析數據比較與偏光紋理圖 40
3-1-2-3 雜環取代原子不同之熱分析數據比較與偏光紋理圖 42
3-1-3 電子雲分佈圖 47
3-1-4 Powder X-ray繞射 49
3-1-4-1 Columnar Rectangular Phase( Colr) 之特徵峰鑑定 49
3-1-4-2 Columnar Hexagonal Phase (Colh) 之特徵峰鑑定 50
3-1-4-3 Power X-ray 繞射數據整理 51
3-1-5 盤狀液晶體積量測法 59
3-1-5-1 體積量測公式之推導 59
3-1-4 熱重分析儀TGA 63
3-1-6 UV-Vis可見光譜及PL放射光譜 64
3-2 結論 67
參考文獻………………………………………………………………..68
附圖 71

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指導教授

賴重光(Chung K. Lai)

審核日期

2007-7-24

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