单晶共价有机框架的连续流合成和合成后转换
Michael Traxler1, William R Dichtel1
1Department of Chemistry, Northwestern University 2145 Sheridan Road Evanston IL 60208 USA wdichtel@northwestern.edu.
Chemical science
|May 24, 2024
概括
研究人员开发了一种连续流程过程,用于快速合成高质量的共价有机框架 (COF). 这种可扩展的方法产生具有高表面积的晶体COF,并允许合成后的修饰,为工业应用铺平了道路.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 纳米技术纳米技术
背景情况:
- 联有机框架 (COF) 的合成受到缓慢的反应动力学和严格的条件控制的阻碍.
- 扩大高质量的COF生产规模仍然是广泛应用的重大挑战.
研究的目的:
- 开发一种快速可扩展的连续流法,用于合成二维 (2D) COF单晶.
- 为了证明连续流方法的多功能性,用于COFs的合成后修改.
主要方法:
- 采用连续流反应过程来聚合因胺结合的COFs.
- 优化反应条件,包括冷却到室温,以促进微米大小的单晶的生长.
- 在连续流系统中证明了合成COF的合成后去甲基化.
主要成果:
- 实现了六边形 (CF-TAPB-DMPDA) 和形 (CF-TAPPy-PDA) COFs的面状单晶的快速合成.
- 经过证明的可扩展性,生产速度超过1g/h,产生具有高晶度和多孔度 (>2000 m2/g) 的材料.
- 成功执行了合成后的修饰 (去甲基化),同时保持了COF形态,结晶性和多孔性.
结论:
- 连续流合成为生产高质量的2D COF单晶提供了一种快速,可扩展和多功能方法.
- 这种方法促进了COF的合成和合成后的修改,这代表了向工业规模生产迈出的重要一步.
- 控制晶体生长和执行流量修改的能力为设计功能性COF材料开辟了新的途径.
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