使用梯形连接器增强孔环境复杂性:朝着多变量二元金属有机框架的逐步组装
Jiandong Pang1,2, Shuai Yuan1, Junsheng Qin1
1Department of Chemistry , Texas A&M University , College Station , Texas 77843-3255 , United States.
Journal of the American Chemical Society
|September 20, 2018
概括
低对称的连接器可以构建复杂的多元件金属有机框架 (MOF). 这项研究引入了PCN-609,一种具有可调节毛孔环境的新型MOF,用于高级应用.
科学领域:
- 材料科学
- 化学学
- 纳米技术
背景情况:
- 多组件金属有机框架 (MOF) 为科学进步提供了精确的功能组配置.
- 由于复杂的结构设计要求,合成复杂的MOF仍然是一个重大挑战.
研究的目的:
- 探索低对称性链接器在构建先进的多组件MOF中的实用性.
- 展示一种创建具有高度复杂和多变异孔环境的MOF的新策略.
主要方法:
- 设计和合成低对称的碳素四碳酸盐连接剂 (Cs点群对称).
- 使用设计的链接器和8连接Zr6集群构建一个新的金属有机框架,PCN-609.
- 合成后的修改涉及对PCN-609连续安装三种线性链接器,以形成二元MOF.
主要成果:
- PCN-609呈现了协调不和的Zr位点和三个不同的晶体口袋.
- 顺序连接器的成功安装导致了具有高结构复杂性的五元MOF.
- 插入链接器的功能化创造了前所未有的复杂性的多变孔环境.
结论:
- 低对称的链接器是复杂的多组件MOF架构的有效构建块.
- 开发的方法可以精确控制MOF的孔隙环境复杂性.
- 这种方法为基于MOF的先进功能材料的设计开辟了新的途径.
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