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聚合有机框架的键调节机械化学合成:限制装配的晶前体策略

Hongguang Chen¹, Daming Feng¹, Fengxia Wei²

¹College of Chemistry, Liaoning University, Shenyang, 110036, China.

Angewandte Chemie (International ed. in English)

|October 8, 2024

概括

一个新的机械化学策略使用共晶前体来高效合成二维胺共价有机框架 (COFs). 这种方法控制了键和共价键,进步了对COF组装机制的理解.

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
有机化学有机化学

背景情况:

二维 imine 共价有机框架 (2D imine-COFs) 是具有显著应用潜力的晶体多孔材料.
2D imine-COFs的形成机制尚未完全理解,这阻碍了它们的高效合成.

研究的目的:

为2D imine-COFs开发一个高效的合成策略.
用机械化学方法阐明2D imine-COF形成的机制方面.

主要方法:

一个一,两步机械化学合成使用 4,4',4''-(1,3,5-triazine-2,4,6-triyl) trianiline (TAPT) 和 p-toluenesulphonic acid (PTSA) 的共晶前体.
描述技术和理论研究,以调查共晶前体在COF组装中的作用.
在调节形成过程中分析结,π-π相互作用和质子化程度.

主要成果:

同晶体前体有效调节了由此产生的2D imine-COFs 的晶体结构.
由TAPT-PTSA共晶体形成的螺旋式键网络促进了有组织的堆叠,层次排列和层间间距.
TAPT氨基的受控质子使得连续的内层和层间的氨基凝结成为可能,防止无形聚合物形成.

结论:

该研究提出了一种新的键调节的机械化学策略,用于合成2D imine-COFs.
这种方法提供了对COF形成的更深入的机制理解,促进了先进的多孔材料的设计和合成.

关键词:

在Cocrystal中使用.协价有机框架协价有机框架机械化学合成机械化学合成非共价相互作用促进了封闭组装.

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