由6个连接的三角镜节点构建的单晶三维共价有机框架
Ying Yin1, Ya Zhang1,2, Xu Zhou1
1College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China.
Journal of the American Chemical Society
|October 4, 2023
概括
研究人员开发了一种新的三角镜节点,以创建一个新的3D共价有机框架 (3D COF). 这种材料表现出异常的硫六化物 (SF6) 吸附和选择性,为气体捕获提供了多孔材料.
科学领域:
- 材料科学
- 化学学
- 纳米技术
背景情况:
- 三维共价有机框架 (3D COF) 的结构多样性有限,阻碍了它们的应用.
- 开发高度连接的多面体节点对于扩展3D COF库至关重要.
研究的目的:
- 设计和合成一个新的6连接的三角镜节点.
- 使用这个节点构建一个新的3D COF并探索它的属性.
- 研究这种3DCOF在气体吸附应用中的潜力.
主要方法:
- 由三二制成的6连接的三角镜节点的合理设计.
- 通过imine凝结构建一个新的3D COF (3D-TMTAPB-COF).
- 单晶X射线衍射以确定晶体结构和拓 (acs,6倍相互透).
- 在298K和1bar时对SF6和N2进行气体吸附测量.
主要成果:
- 一个新的6连接的三角镜节点已成功合成.
- 构建了一个具有罕见的6倍互穿的ACS拓的新型3D COF (3D-TMTAPB-COF).
- 通过无调节器的溶热方法获得3DCOF的大单晶体 (∼15μm).
- 3D-TMTAPB-COF显示了高的SF6吸附能力 (60.9cm3g-1) 和SF6/N2的选择性 (335).
结论:
- 该研究证实使用强共价键通过无调节器的溶热方法生长大尺寸单晶3DCOF的可行性.
- 一个新的三角镜节点被报道,为构建3DCOF提供了新的可能性.
- 合成的3D COF在SF6捕获方面显示出有前途的性能,超过了许多现有的晶体多孔材料.
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