自组装的"孔脂质"对外部刺激有反应的光物理和液晶特性
Yi Ren1, Wang Hay Kan, Matthew A Henderson
1Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, AB T2N 1N4, Canada.
Journal of the American Chemical Society
|October 1, 2011
概括
新的两性材料表现出可调节的光物理特性. 这些材料显示聚合诱导的增强辐射和对外部刺激的响应行为,为先进的功能材料铺平了道路.
科学领域:
- 材料科学 材料科学 材料科学
- 超分子化学 超分子化学
- 有机电子 有机电子
背景情况:
- 孔化学提供了独特的电子特性.
- 脂质自我组装原理使得可控的物质组织成为可能.
- 两性分子可以形成有序的相位.
研究的目的:
- 合成新型的双胞胎材料.
- 研究它们的自我组装和相位行为.
- 探索它们的光物理特性和刺激反应.
主要方法:
- 核磁共振 (NMR) 光谱用于结构和形状分析.
- 不同扫描热量计 (DSC),极化光学显微镜 (POM) 和可变温度粉末X射线衍射 (VT-PXRD) 用于相位行为研究.
- 稳态和时间分辨率光谱学用于研究光物理过程,如聚合诱导增强发射 (AIEE) 和光诱导电子转移 (PET).
主要成果:
- 合成的两胞性材料表现出由分子间相互作用引发的分子内部形状变化.
- 观察到由结合的骨干和对抗离子影响的液晶和软晶相行为.
- 在dithieno[3,2-b:2",3"-d]化合物中显示的聚合诱导增强排放 (AIEE).
- 通过分子间电荷转移 (ICT) 进行光诱导电子转移 (PET) 的抑制.
- 确认了对外部刺激有反应的光物理性质 (温度,机械力).
结论:
- 合成的两胞性材料具有动态形状和自组装特征.
- 它们的固态和溶液特性可以通过分子设计和外部刺激来调整.
- 这些材料有可能用于先进的功能材料和有机电子.
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