通过在可逆相隔下进行组件再分配来调整因胺成分的动态共价系统以适应介质变化
1Institut de Science et d'Ingénierie Supramoléculaires, ISIS Université de Strasbourg, Strasbourg 67000, France.
Journal of the American Chemical Society
|July 13, 2012
概括
这项研究表明,动态共价图书馆可以在分开成不同阶段时重组和适应,然后在重组时进行改革. 这个过程在每个阶段内选择最稳定的组件.
科学领域:
- 化学 化学 化学
- 材料科学 材料科学 材料科学
- 超分子化学 超分子化学
背景情况:
- 动态共价化学 (DCC) 允许创建适应性材料.
- 立宪动态图书馆 (CDL) 是相互转换的分子的集合,可以调整它们的组成.
- 阶段分离是一种可以用来控制分子组织的现象.
研究的目的:
- 为了研究一个正在经历可逆相分离的动态共价图书馆的行为.
- 为了展示CDL如何根据相位变化调整其组成.
- 探索2D宪法动态网络转化为3D网络的过程.
主要方法:
- 一个动态的共价图书馆的imine成分被准备在一个acetonitrile/水混合物.
- 使用物理刺激 (热) 或化学效应剂 (盐,碳水化合物,有机溶剂) 诱导相分离.
- 分析了图书馆的宪法重组和阶段分离期间的组件选择.
- 在阶段统一之后,该过程的可逆性得到了证实.
- 演示了从2D网络转变为3D网络的过程.
主要成果:
- 在诱导阶段分离后,CDL经历了宪法重组.
- 该系统表现出可逆相位分离和重聚,再生了最初的库.
- 组件选择导致每个阶段对最适合的组件进行上调.
- 一个2D (正方形) 宪法动态网络成功地被分割成一个3D (立方体) 网络.
结论:
- 动态共价图书馆可以根据可逆相分离来调整它们的组成.
- 阶段分离在CDL中起到选择和重组的刺激作用.
- 这项工作展示了一种创新方法,可以从二维前体创建自适应的3D网络.
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