淡江大學機構典藏:Item 987654321/110886
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    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/110886


    Title: 五炔苯基苯二聚物液晶相之分子堆疊延伸性質研究探討
    Other Titles: Study of correlation length in molecular packing of liquid crystalline dimer of pentakis(phenylethynyl)benzene
    Authors: 洪嘉宏;Hong, Jia-Hong
    Contributors: 淡江大學化學學系碩士班
    徐秀福;Hsu, Hsiu-Fu
    Keywords: 五炔苯基苯衍生物;液晶;盤狀向列型;筒狀　　;discotic nematic;Pentakis(phenylethynyl)benzene drivative;liquid crystal;columnar
    Date: 2016
    Issue Date: 2017-08-24 23:38:32 (UTC+8)
    Abstract: 本論文之液晶分子研究以五炔苯基苯的雙聚物為主體，化合物A至D已由實驗室成員合成，其中具烷氧鏈者易形成盤狀向列相，而具烷鏈者則易形成筒狀相。本文先純化化合物A至D並取得光譜數據，再另外合成具長烷鏈的化合物E，以比較液晶行為。
    In this thesis, the liquid crystal properties of dimers of pentakis(phenylethynyl)benzene were studied. Compounds A to D, synthesized by former members, are further purified to obtain complete spectroscopic and liquid crystalline property data. Disc dimers with alkoxy chains tend to form the discotic nematic phase. Disc dimers with alkyl chains are prone to form the columnar phase. A new disc dimer E with longer alkyl chains has been prepared to show lower transition temperatures.
    Appears in Collections:[Graduate Institute & Department of Chemistry] Thesis

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