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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/6257


    Title: 具有Benzobisthiazoles和Benzobisoxazoles結構之盤狀液晶材料;Columnar Phases Formed by Heterocyclic Benzobisthiazoles and Benzobisoxazoles
    Authors: 周龍君;Lung-Chun CHOU
    Contributors: 化學研究所
    Keywords: 發光;雜環;Benzobisoxazoles;Benzobisthiazoles
    Date: 2007-07-09
    Issue Date: 2009-09-22 10:16:31 (UTC+8)
    Publisher: 國立中央大學圖書館
    Abstract: 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。 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.
    Appears in Collections:[Graduate Institute of Chemistry] Electronic Thesis & Dissertation

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