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基于Diazapyrene的二维合有机框架的超细空间调制

Zhuowei Li¹, Takahiro Tsuneyuki¹, Rajendra Prasad Paitandi¹

¹Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan.

Journal of the American Chemical Society

|August 8, 2024

概括

研究人员使用迪亚zapyrene构建块合成了新的二维共价有机框架 (COF). 这些高度结晶的COF具有出色的电和质子导电性,为先进的材料应用铺平了道路.

科学领域:

材料科学
超分子化学
有机化学

背景情况:

同价有机框架 (COF) 通过量身定制的合成提供可调节的特性.
高晶度对于COF性能至关重要.
基于Pyrene的COF以其有序的晶体结构而闻名.

研究的目的:

通过使用2,7-迪亚zapyrene构建块来合成和描述新的二维 (2D) COF 层.
探讨对COF结构,电子性质和导电性的代沙替代的影响.
评估这些材料在电气和质子导电应用中的潜力.

主要方法:

使用功能化构件的COF自下而上的合成.
结构特征以确定拓和结晶性.
用光谱分析来确定光学带隙.
微波导电测量以评估电特性.
质子导电性测量

主要成果:

酸盐的替代导致了几乎"平坦"的2DCOF层与受控的扭转角度.
实现了高热力学稳定性 (∼500°C) 的有序面对面 (滑动式AA) 堆叠安排.
在2D框架中扩展电联,光学带间距很小 (∼2.1 eV).
显示显著的微波导电性和最大的质子导电性为10−2 S cm−1.
单元中的中心作为质子转移的活性场所.

结论:

基于二氧化的四边形COF是高度结晶的二维材料.
这些材料具有独特的电和质子导电能力.
平面结构和中心有助于它们的导电性.
在需要高效的电荷和质子传输的应用中,基于迪亚zapyrene的COF具有前景.

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