臺灣博碩士論文加值系統

摘要
本論文的研究內容主要以含醯胺和酸根取代之咪唑配位基與Ag(I)、Au(I)、Zn(II)、Cu(II)金屬合成出配位或有機金屬液晶化合物。由於醯胺（amide）和酸（acid）皆屬晶體工程學中常用之分子模塊（synthon），因此希望運用其所形成的有方向性且強的O-H…O、N-H…O氫鍵至我們原有的雙烷基咪唑鹽類系統中，改變離子性金屬液晶的head group，及所形成的氫鍵網路進而控制分子堆積來得到新型的金屬液晶。
含醯胺基之金(I)、銀(I)系列化合物受到醯胺基所形成的amide catemer影響，形成了新的堆積模式，從鑑定數據中我們得知兩系列化合物除具有熱致性液晶性質外，亦是一個metallogel，可在DMSO中成膠，並在MeOH中形成260nm的fiber，在外觀的表現上有相當特異之處。根據文獻和實驗室之前的發表，我們預測化合物應為螺旋管狀結構，這樣的結構在經由相變化的時候，更在POM下觀察到有thermochromism的現象。
含酸根之鋅(II)、銅(II)系列化合物，較文獻上之不同處在於我們所使用之zwitter ion配位基，由於電荷間的差異，使得銅(II)系列方面仍傾向形成層狀液晶而非盤狀液晶，值得一提是其液晶相的表現上更是有優於傳統中性分子的性質。

Abstract
Amide functionalized of N-heterocyclic carbene complexes of silver(I) and gold(I) were prepared. All the complexes prepared are thermotropic liquid crystals. These compounds also exhibit gellating properties in DMSO. Porous donut shaped solids composed of fibers of 260nm thickness were obtained from MeOH solvent. Interesting thermochromism phenomenon occurs in the phase transition. A helical structure were proposed.
Liquid crystalline zinc(II) and copper(II) complexes of carboxylates containing imidazolium cations were prepared. Liquid crystalline behaviors of these compounds are different from those simple carboxylate compounds, because of the zwitter ionic properties of the ligands we used. The Cu(II) series trends to form lamellar mesophase instead of discotic mesophase observed in the carboxylate compouns.

目錄
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圖目錄
表目錄
中文摘要
英文摘要
第一章 緒論 1
1-1 前言 1
1-2 液晶的發現與分類 2
1-3 離子性液晶 3
1-4 金屬液晶 4
1-5 分子作用力 5
第二章 含醯胺之咪唑金屬液晶的合成及物性研究 6
2-1 研究動機 6
2-2 實驗部份 9
2-2-1 實驗流程 9
2-2-2 合成方法 10
2-3 結果與討論 14
2-3-1 銀(I)化合物系列 14
2-3-1-1 鑑定數據分析 14
2-3-1-2 熱分析 17
2-3-2 金(I)化合物系列 19
2-3-2-1 鑑定數據分析 19
2-3-2-2 熱分析 22
2-3-2-3 X-ray粉末繞射分析 25
2-3-3 構型之討論 28
2-4 結論 35
第三章 含酸根之咪唑金屬液晶的合成及物性研究 36
3-1 研究動機 36
3-2 實驗部份 38
3-2-1 實驗流程 38
3-2-2 合成方法 39
3-3 結果與討論 43
3-3-1 鋅(II)化合物系列 43
3-3-1-1 鑑定數據分析 43
3-3-1-2 IR光譜分析 44
3-3-1-3 熱分析 45
3-3-1-4 X-ray粉末繞射分析 47
3-3-2 銅(II)化合物系列 50
3-3-2-1 鑑定數據分析 50
3-3-2-2 IR光譜分析 51
3-3-2-3 熱分析 52
3-3-2-4 X-ray粉末繞射分析 55
3-4 結論 59
第四章 藥品與儀器 60
第五章 參考資料 62
附錄

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