一种有支柱层的协调聚合物,具有可旋转的支柱,作为客分子分子的分子门
Joobeom Seo1, Ryotaro Matsuda, Hirotoshi Sakamoto
1Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan.
Journal of the American Chemical Society
|August 18, 2009
概括
这项研究引入了一种具有分子门的新型多孔协调聚合物. 这种材料表现出独特的客响应转换和选择性气体吸附特性.
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
- 晶体学 晶体学是指结晶学.
背景情况:
- 设计具有量身定制毛孔性质的多孔协调聚合物 (PCP) 对于高级功能至关重要.
- 灵活的图案和功能组是实现所需PCP的关键.
- 了解客户与框架之间的交互对于开发响应性材料至关重要.
研究的目的:
- 合成和描述一种具有分子门的新型3D支柱层协调聚合物.
- 调查框架的灵活性和客户响应行为.
- 为了探索材料的气体吸附特性和潜在的应用.
主要方法:
- 单晶X射线衍射以确定结构变化.
- 在不同温度下测量气体吸附异热 (H2O,CO2,N2,O2).
- 分析客人包容对框架动态的影响.
主要成果:
- 一个3D协调聚合物{[Cd(2)(pzdc)(2)L(H(2)O)(2)].5(H(2)O). (CH3) 合成,其中一个可旋转的柱子作为分子门.
- 在客分子去除/重新结合时观察到可逆的单晶到单晶的转化.
- 该材料证明了对N2和O2的选择性CO2吸收,以及与框架功能相关的逐步吸附水.
结论:
- 合成的材料作为一个具有锁定/解锁系统的分子门,使得门可打开的吸附配置文件.
- 框架灵活性,包括柱子旋转和层滑动,是其响应性行为的关键.
- 该研究提供了对动态多孔材料中客体吸收机制的基本见解.
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