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    請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/5817


    題名: 含特殊金屬中心半盤狀及盤狀之液晶材料;Ionic columnar metallomesogen derived from three- coordinated copper(I) complexes.
    作者: 林宏達;Hon-Da Lin
    貢獻者: 化學研究所
    關鍵詞: 筒狀液晶相;半盤狀與盤狀構型;一價三配位之銅金屬中心;columnar liquid crystal phases;half- discotic an
    日期: 2001-05-04
    上傳時間: 2009-09-22 10:07:56 (UTC+8)
    出版者: 國立中央大學圖書館
    摘要: 本篇論文將探討由三配位銅一價離子型錯合物所形成之含金屬筒狀液晶原其蘊含之有趣現象與液晶特性。{2-[3’-(N”-alkoxyphenyl)-5’-methyl-1’-pyrazolyl]ethyl ether}copper(Ⅰ) tetrafluoroborates之三系列與{2-[3’-(N”-alkoxyphenyl)-5’-(N”-alkoxyphenyl)-1’-pyrazolyl]ethyl ether}copper(Ⅰ) tetrafluoroborates之二系列已被製備並鑑定其性質。此前三系列半盤狀構型之離子型銅一價錯合物藉由2-[3’-(N”-alkoxyphenyl)-5’-methyl-1’-pyrazolyl]ethyl ethers與[Cu(CH3CN)4]BF4在acetonitrile中反應而得,而之後盤狀結構之二系列乃利用2-[3’-(N”-alkoxy-phenyl)-5’-(N”-alkoxyphenyl)-1’-pyrazolyl]ethyl ethers在相同條件下反應而得。此經分離而得,淡綠色固體之三稜銅一價錯合物已經核磁共振光譜與元素分析之結構鑑定,而其液晶特性亦已藉由偏光顯微鏡(POM),熱示差掃描卡量計(DSC)及X射線粉末繞射儀(XRD)進行測定。結果顯示此型錯合物表現出具有不規則六角排列筒狀液晶相(disordered hexagonal columnar phases; Colhd)。此型錯合物之澄清點相對較低(81-112℃)且由測量計算得到其液晶相溫度範圍為45-68℃。 除了將在本篇論文中探討中心甲基存在與否對液晶相構形之影響外,也將詳細比較並探究側鏈基總數與碳鏈長度(側鏈基碳數多寡)所造成之不同液晶特性。其他相關之特性研究將於本實驗室繼續進行中。 The thesis will discuss some interesting phenomena and L.C. characteristics of columnar metallomesogens formed by three-coordinated ionic copper(Ι) complexes. Three series of {2-[3’-(N”-alkoxyphenyl)-5’-methyl-1’-pyrazolyl]ethyl ether}copper(Ι) tetrafluoroborates and two series of {2-[3’-(N”-alkoxy-phenyl)-5’-(N”-alkoxyphenyl)-1’-pyrazolyl]ethyl ether}copper(Ι) tetrafluoroborates were prepared and characterized. The previous three series of half-disk constructions of the ionic copper(Ι) complexes were obtained by reaction of 2-[3’-(N”-alkoxyphenyl)-5’-methyl-1’-pyrazolyl]ethyl ethers and [Cu(CH3CN)4]BF4 in acetonitrile, and the later two series of disk structures were under the same conditions using 2-[3’-(N”-alkoxyphenyl)-5’-(N”-alkoxyphenyl)-1’-pyrazolyl]ethyl ethers. These three-coordinated copper(Ι) complexes isolated, slightly green solids, were characterized by NMR spectroscopy and elemental analysis, and their mesomorphic properties were also studied by polarized optical microscope(POM), differential scanning calorimetry(DSC) and powder X-ray diffraction(XRD). Results indicated that these complexes exhibited disordered hexagonal columnar phases (Colhd). The clearing points were relatively low(81-112℃) and the temperature range of mesophases was ca. 45-68℃. The effect on the formation of mesophases by existence of methyl group will be studied as well in this thesis. In addition, the formation of mesomorphic properties on the numbers of side chains and the length of the carbon chains will be investigated in detail. Other relative researches will be in progress in our laboratory continuously.
    顯示於類別:[化學研究所] 博碩士論文

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