通过 π··π 堆叠和结构建基于 π-堆叠的超分子的等级自组件
Guo-Ling Li1,2, Zhu Zhuo1,2, Bin Wang1,2
1CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China.
Journal of the American Chemical Society
|July 16, 2021
概括
研究人员使用金属离子和有机配体开发了新型的π堆叠超分子. 这些体具有多功能分层自组,可封装多种客分子和反应性物种.
科学领域:
- 超分子化学
- 材料科学
- 协调化学
背景情况:
- 通过弱相互作用从多个子单元构建复杂的超分子是具有挑战性的.
- π 叠加的超分子仍然在很大程度上未被探索.
- 层次的自我组装为复杂的分子架构提供了途径.
研究的目的:
- 报告第一个π叠叠的超分子 (π-MX-).
- 调查这些子的等级自组.
- 证明 π-MX 在封装各种客分子和稳定反应物种中的多功能性.
主要方法:
- 从16个[MXL]+离子 (M=Mn2+,Co2+;X=Br-,SCN-,Cl-;L=tris{2-胺甲基) 组装 π-MX-,使用18个分子间的 π-堆叠相互作用.
- 由[MXL]+离子形成的顶点和边缘的四面体结构的特征.
- 通过变化的M2+/X-对来探索客体封装和层次上的上层结构形成.
主要成果:
- 成功合成具有四面体几何的π-堆叠 (π-MX-).
- 通过 π 堆叠和结合来证明层次的自组装.
- π-MnBr-cages封装的乙二或cis-1,3,5-cyclohexanetricarbonitrile和无机.
- π-CoSCN-稳定了含硫的反应性物种.
- π-CoCl-cages促进了与H2PO4-离子的无机半孔框架的形成.
结论:
- 这项研究提出了一种新型的π叠叠超分子.
- 这些子在等级自组和客人合并方面表现出了显著的多功能性.
- 这些发现为设计基于π-π堆叠相互作用的功能性超分子材料开辟了新的途径.
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