加热诱导的切换到分层的液晶性,结合Zwitterionic分子中的合体和分子秩序
Lotta Gustavsson1, Zhong-Peng Lv1, Tomy Cherian1
1Department of Applied Physics, Aalto University, Puumiehenkuja 2, FI-00076 Espoo, Finland.
ACS omega
|October 30, 2023
概括
兹威特子分子在无溶剂状态下形成可切换的等级自组合. 这一发现揭示了一种新型的热otropic 液晶晶性,具有复杂材料设计的潜力.
科学领域:
- 软物质科学 软物质科学
- 超分子化学 超分子化学
- 材料科学 材料科学 材料科学
背景情况:
- 软物质中的等级自我组装对于创建由生物学启发的复杂,多功能材料至关重要.
- 在无溶剂状态下实现这样的组件,平衡竞争相互作用,是一个重大的科学挑战.
研究的目的:
- 为了研究zwitterionic bis-n-tetradecylphosphobetaine的无溶剂自组装行为.
- 探索热切换等级结构和新型液晶相的潜力.
主要方法:
- 使用同步微角X射线散射 (SAXS) 来分析结构变化.
- 研究是在无溶剂状态下进行的,有或没有塑化离子液体.
主要成果:
- 在没有溶剂的状态下,Bis-n-tetradecylphosphobetaine表现出复杂的,可热切换的等级自我组装.
- 在加热时,观察到从分子层面向层级组件 (结合合体和分子) 的可逆过渡.
- 高温阶段显示了双折流,表明了具有2D斜纳米板块的新型层次热otropic液晶相.
结论:
- 简单的zwitterionic分子可以在没有溶剂的情况下产生结构层次和可调整的复杂性.
- 平衡静电和纳米分离相互作用是控制大量软物质自我组装的关键.
- 这项工作引入了一种新的层次热热型液晶类型,在先进材料中具有潜在的应用.
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