通过合成后链接器交换的金属-胺基框架
Lujia Liu1, Liang Li1, Michael E Ziebel2
1Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States.
Journal of the American Chemical Society
|February 5, 2020
概括
这项研究引入了一种使用后合成链接器交换合成金属有机框架 (MOF) 的新方法,使其能够创建具有独特金属键和多种协调模式的新材料.
科学领域:
- 材料化学
- 超分子化学
- 晶体学
背景情况:
- 具有基连接器的金属有机框架 (MOF) 具有理想的物理性质.
- 这些MOF的直接合成是具有挑战性的,因为它们具有强大的金属键.
研究的目的:
- 开发一种用于合成金属二胺基框架的合成后链接器交换方法.
- 研究具有不同捐赠原子和酸度的链接剂之间的交换机制.
主要方法:
- 单晶与单晶的合成后链接物交换反应.
- 使用NMR,拉曼和能量散射X射线 (EDX) 光谱进行表征.
- 通过13C NMR和空间分辨的EDX量化链接器交换.
主要成果:
- 从二二基前体成功合成金属二二基框架.
- 11 pKa 单位的捐赠原子之间的链接交换的证明.
- 在MOF晶体内交换的连接剂的均分布.
结论:
- 这项研究介绍了在MOF中与不同供体原子交换有机链接物的第一个方法.
- 这种后合成方法提供了一个创建具有异常协调模式的新型MOF的总体策略.
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