螺旋型聚乙烯在合性阴性液晶中的合成,使用皇冠类型的双纳衍生物作为合性补充剂
Kazuo Akagi1, Shouxue Guo, Taizou Mori
1Institute of Materials Science, University of Tsukuba, Ibaraki 305-8573, Japan. akagi@ims.tsukuba.ac.jp
Journal of the American Chemical Society
|October 20, 2005
概括
皇冠乙醇双纳衍生物 (CEBDs) 有效诱导了性阴性液晶 (N*-LCs). 它们的螺旋结构影响了螺旋型聚乙烯形态,纤维间距与N*-LC距离相匹配.
科学领域:
- 材料科学 材料科学 材料科学
- 有机化学 有机化学
- 聚合物科学 聚合物科学
背景情况:
- 状阴性液晶 (N*-LCs) 对于先进的光学材料至关重要.
- 在N*-LCs中诱导所需的螺旋结构时,状补充剂是必不可少的.
- 了解剂结构与N*-LC特性之间的关系是关键.
研究的目的:
- 合成新型皇冠乙烯类型双纳衍生物 (CEBDs) 作为合性兴奋剂.
- 为了研究CEBDs对由环 (PCH) 衍生的阴性液晶的扭转能力.
- 探索CEBD诱导的N*-LCs中的螺旋型聚乙烯的合成及其结构相关性.
主要方法:
- 一系列皇冠乙烯类型双纳衍生物 (CEBD) 的合成.
- 对CEBDs在由环素 (PCH) 衍生的阴性液晶上的扭转能力的评估.
- 在诱导的N*-LC中合成螺旋型聚乙烯和形态分析.
主要成果:
- CEBDs成功诱导了奇拉性阴性 (N*) 液晶.
- 随着皇冠乙环尺寸的减少,CEBD的扭转能力增加.
- 螺旋式聚乙烯的形态与N*-LC螺旋结构相关:纤维束间距离等于螺旋间距的一半,螺丝方向相反.
结论:
- 皇冠乙醇双纳衍生物是液晶的有效性剂.
- 由CEBDs控制的N*-LCs的螺旋结构决定了合成的螺旋聚乙烯的形态.
- 这项研究建立了液晶螺旋结构和聚合物形态学之间的直接联系.
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