作为合成后结构互转和孔壁修改平台的氨基联结共价有机框架
Lars Grunenberg1,2, Gökcen Savasci1,2,3, Maxwell W Terban1
1Max Planck Institute for Solid State Research, Heisenbergstrasse 1, 70569 Stuttgart, Germany.
Journal of the American Chemical Society
|February 24, 2021
概括
研究人员开发了一种创建氨基链共价有机框架 (COF) 的新方法. 这些先进的材料提供了可调节的性能和增强的稳定性,用于催化.
科学领域:
- 材料科学
- 有机化学
- 聚合物化学
背景情况:
- 共价有机框架 (COF) 是具有调节性质的晶体聚合物.
- 现有的COF合成方法在功能和稳定性方面存在局限性.
研究的目的:
- 开发一种用于直接合成氨基联结COF的新策略.
- 为了使孔壁的修改和链接在COF的相互转换.
- 为催化应用创造具有增强水解稳定的COF.
主要方法:
- 使用酸和酸盐的Leuckart-Wallach还原方法.
- 采用一个结晶-减少方法.
- 合成的氨基联结COF (rPI-3-COF,rTTI-COF,rPy1P-COF) 来自氨基联结前体或结合剂.
主要成果:
- 通过直接合成具有高晶度和大表面积的氨基联结COF.
- 具有二次氨基链接,混合氨基/氨基键和形式氨基链接的生成框架.
- 通过二次胺证明了孔壁的合成后功能化.
结论:
- 这种新方法可以获得多功能氨基联结COF.
- 这些COF表现出改善的水解稳定性和异质催化剂的潜力.
- 该战略允许针对特定应用程序量身定制的功能化.
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