通过安装离子连接器调整稳定的金属有机框架的离子性
Jiandong Pang1, Shuai Yuan1, Jun-Sheng Qin1
1Department of Chemistry , Texas A&M University , College Station , Texas 77843-3255 , United States.
Journal of the American Chemical Society
|January 29, 2019
概括
研究人员用离子链接器设计了金属有机框架 (MOF),为选择性染料捕获和离子交换创造了新的多孔材料. 这些修改后的MOF在催化中具有潜力,特别是在光催化应用中.
科学领域:
- 材料科学
- 纳米技术
- 化学学
背景情况:
- 金属有机框架 (MOF) 提供可调节的结构,但在高级应用中面临着孔环境工程方面的挑战.
- 修改MOF孔隙环境对于扩大它们在不同领域的用途至关重要.
研究的目的:
- 在基于Zr的MOF (PCN-700和PCN-608) 中开发和实施离子连接器安装,以创建功能性的离子框架.
- 研究这些改性MOF的特性和应用,重点是选择性捕获和催化.
主要方法:
- 在微孔和中孔Zr基MOF上进行了离子连接器安装.
- 进行了选择性离子染料捕获实验以确认框架的离子性质.
- 用于离子交换和催化而修改的PCN-608中保存了半孔结构.
- 通过离子交换将光活性离子Ru ((bpy) 3^2+封装成阳离子半孔PCN-608-SBDC.
主要成果:
- 在基于Zr的MOF中使用离子链接器安装成功合成了离子框架.
- 证明了选择性离子染料捕获,证实了工程MOF的离子特性.
- 在PCN-608中保持中孔性,使交换和随后的Ru (bpy) 3^2+封装成为可能.
结论:
- 离子连接器安装是MOF中孔隙环境工程的一个有效策略.
- 由此产生的离子MOF具有选择性捕获,离子交换和光催化潜力.
- 在多个周期的aza-Henry反应中,Ru(bpy) 3^2+封装的MOF表现出良好的催化性能.
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