Yue Yan, Li Hanying, Chen Hongzheng, Huang Ning
MOE Key Laboratory of Macromolecular Synthesis and Functionalization, State Key Laboratory of Silicon Materials, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
J Am Chem Soc. 2022 Feb 23;144(7):2873-2878. doi: 10.1021/jacs.1c13012. Epub 2022 Feb 7.
A new kind of piperazine-linked covalent organic framework (COF) was synthesized through the nucleophilic substitution reaction between octaminophthalocyanines and hexadecafluorophthalocyanines. The two-dimensional (2D) frameworks are in tetragonally shaped polygon sheets, which stack in an AA stacking mode to constitute periodically ordered metallophthalocyanine columns and one-dimensional (1D) microporous channels. The piperazine-linked COFs exhibit excellent chemical stability and permanent porosity. By virtue of the neatly arrayed phthalocyanine columns and inbuilt cationic radicals, the piperazine-linked frameworks are highly conductive. The conductivity values of NiPc-NH-CoPcF COF reached up to 2.72 and 12.7 S m for pellet and film samples, respectively. Moreover, this -type conductive COF exhibited a high carrier mobility of 35.4 cm V s. Both the electric conductivity and carrier mobility set new records for conductive COFs.
通过八氨基酞菁与十六氟酞菁之间的亲核取代反应合成了一种新型的哌嗪连接共价有机框架（COF）。二维（2D）框架呈四边形多边形片层状，以AA堆积模式堆叠，构成周期性有序的金属酞菁柱和一维（1D）微孔通道。哌嗪连接的COF表现出优异的化学稳定性和永久孔隙率。由于酞菁柱排列整齐且内置阳离子自由基，哌嗪连接的框架具有高导电性。NiPc-NH-CoPcF COF的颗粒和薄膜样品的电导率值分别高达2.72和12.7 S m。此外，这种类型的导电COF表现出35.4 cm V s的高载流子迁移率。电导率和载流子迁移率均为导电COF创造了新记录。
