Yu Soo-Young, Mahmood Javeed, Noh Hyuk-Jun, Seo Jeong-Min, Jung Sun-Min, Shin Sun-Hee, Im Yoon-Kwang, Jeon In-Yup, Baek Jong-Beom
School of Energy and Chemical Engineering, Center for Dimension-Controllable Organic Frameworks, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST, Ulsan, 44919, Republic of Korea.
Department of Chemical Engineering, Wonkwang University, Iksandae-ro 460, Iksan, Jeonbuk, 54538, Republic of Korea.
Angew Chem Int Ed Engl. 2018 Jul 9;57(28):8438-8442. doi: 10.1002/anie.201801128. Epub 2018 Apr 23.
There have been extensive efforts to synthesize crystalline covalent triazine-based frameworks (CTFs) for practical applications and to realize their potential. The phosphorus pentoxide (P O )-catalyzed direct condensation of aromatic amide instead of aromatic nitrile to form triazine rings. P O -catalyzed condensation was applied on terephthalamide to construct a covalent triazine-based framework (pCTF-1). This approach yielded highly crystalline pCTF-1 with high specific surface area (2034.1 m g ). At low pressure, the pCTF-1 showed high CO (21.9 wt % at 273 K) and H (1.75 wt % at 77 K) uptake capacities. The direct formation of a triazine-based COF was also confirmed by model reactions, with the P O -catalyzed condensation reaction of both benzamide and benzonitrile to form 1,3,5-triphenyl-2,4,6-triazine in high yield.
为了实际应用并发挥其潜力，人们已经做出了广泛努力来合成结晶性共价三嗪基框架（CTF）。采用五氧化二磷（P₂O₅）催化芳香酰胺而非芳香腈直接缩合形成三嗪环。将P₂O₅催化缩合应用于对苯二甲酰胺以构建共价三嗪基框架（pCTF-1）。这种方法得到了具有高比表面积（2034.1 m² g⁻¹）的高度结晶的pCTF-1。在低压下，pCTF-1表现出高的CO₂吸附容量（在273 K时为21.9 wt%）和H₂吸附容量（在77 K时为1.75 wt%）。通过模型反应也证实了基于三嗪的COF的直接形成，即P₂O₅催化苯甲酰胺和苯甲腈的缩合反应以高产率形成1,3,5-三苯基-2,4,6-三嗪。
