设计了3D共价有机框架的合成
Hani M El-Kaderi1, Joseph R Hunt, José L Mendoza-Cortés
1Center for Reticular Chemistry at California NanoSystems Institute, Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, CA 90095, USA.
概括
新的三维共价有机框架 (3D COF) 呈现出高热稳定性和高表面积. 这些使用凝结反应合成的先进材料,为潜在的应用提供了非常低的密度.
科学领域:
- 材料科学 材料科学 材料科学
- 化学 化学 化学
背景情况:
- 性有机框架 (COFs) 是晶体多孔聚合物.
- 设计具有特定网络拓的3D COF是一个持续的挑战.
研究的目的:
- 为了合成新的三维共价有机框架 (3D COF).
- 针对特定的网络拓 (ctn和bor) 针对量身定制的材料特性.
主要方法:
- 通过凝结反应合成3DCOF.
- 使用四面体构建块,如四面体 ((4-二氧化玻利) 甲或西兰.
- 与三角形的2,3,6,7,10,11-hexahydroxytriphenylene进行共冷凝.
主要成果:
- 成功合成了三维晶体COF (COF-102和COF-103).
- 由于强有力的共价键,实现了高热稳定性 (400-500°C).
- 获得了高表面积 (3472-4210 m2/g) 和极低密度 (0.17 g/cm3).
结论:
- 目标合成产生了具有理想性质的强大的3DCOF.
- 这些3DCOF显示出需要高表面积和低密度的应用的潜力.
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