Ogoshi Tomoki, Sakatsume Yuma, Onishi Katsuto, Tang Rui, Takahashi Kazuma, Nishihara Hirotomo, Nishina Yuta, Campéon Benoît D L, Kakuta Takahiro, Yamagishi Tada-Aki
Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, Japan.
WPI Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kakuma-machi, Kanazawa, Japan.
Commun Chem. 2021 May 21;4(1):75. doi: 10.1038/s42004-021-00515-0.
Carbon materials with controlled pore sizes at the nanometer level have been obtained by template methods, chemical vapor desorption, and extraction of metals from carbides. However, to produce porous carbons with controlled pore sizes at the Ångstrom-level, syntheses that are simple, versatile, and reproducible are desired. Here, we report a synthetic method to prepare porous carbon materials with pore sizes that can be precisely controlled at the Ångstrom-level. Heating first induces thermal polymerization of selected three-dimensional aromatic molecules as the carbon sources, further heating results in extremely high carbonization yields (>86%). The porous carbon obtained from a tetrabiphenylmethane structure has a larger pore size (4.40 Å) than those from a spirobifluorene (4.07 Å) or a tetraphenylmethane precursor (4.05 Å). The porous carbon obtained from tetraphenylmethane is applied as an anode material for sodium-ion battery.
通过模板法、化学气相解吸以及从碳化物中提取金属等方法，已经获得了具有纳米级可控孔径的碳材料。然而，要制备具有埃级可控孔径的多孔碳，需要简单、通用且可重复的合成方法。在此，我们报道了一种合成方法，用于制备孔径可在埃级精确控制的多孔碳材料。首先加热会引发所选三维芳香族分子作为碳源的热聚合反应，进一步加热则会产生极高的碳化产率（>86%）。由四联苯甲烷结构得到的多孔碳的孔径（4.40 Å）比由螺二芴（4.07 Å）或四苯甲烷前驱体（4.05 Å）得到的多孔碳的孔径更大。从四苯甲烷得到的多孔碳被用作钠离子电池的负极材料。
