On-Surface Synthesis of Single-Layered Two-Dimensional Covalent Organic Frameworks via Solid–Vapor Interface Reactions,Journal of the American Chemical Society

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On-Surface Synthesis of Single-Layered Two-Dimensional Covalent Organic Frameworks via Solid–Vapor Interface Reactions
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2013-07-03 , DOI: 10.1021/ja403464h
Xuan-He Liu _{1,

2} , Cui-Zhong Guan _{1,

2} , San-Yuan Ding ₃ , Wei Wang ₃ , Hui-Juan Yan ₁ , Dong Wang ₁ , Li-Jun Wan ₁

Affiliation

Surface covalent organic frameworks (SCOFs), featured by atomic thick sheet with covalently bonded organic building units, are promised to possess unique properties associated with reduced dimensionality, well-defined in-plane structure, and tunable functionality. Although a great deal of effort has been made to obtain SCOFs with different linkages and building blocks via both "top-down" exfoliation and "bottom-up" surface synthesis approaches, the obtained SCOFs generally suffer a low crystallinity, which impedes the understanding of intrinsic properties of the materials. Herein, we demonstrate a self-limiting solid-vapor interface reaction strategy to fabricate highly ordered SCOFs. The coupling reaction is tailored to take place at the solid-vapor interface by introducing one precursor via vaporization to the surface preloaded with the other precursor. Following this strategy, highly ordered honeycomb SCOFs with imine linkage are obtained. The controlled formation of SCOFs in our study shows the possibility of a rational design and synthesis of SCOFs with desired functionality.

中文翻译：

通过固-汽界面反应在表面合成单层二维共价有机骨架

表面共价有机框架 (SCOF) 以具有共价键合有机构建单元的原子厚片为特征，有望具有与降低维度、明确定义的面内结构和可调功能相关的独特特性。尽管通过“自上而下”剥离和“自下而上”表面合成方法获得具有不同连接和构建块的SCOFs做出了大量努力，但获得的SCOFs通常结晶度较低，这阻碍了对结构的理解。材料的内在特性。在此，我们展示了一种自限性固气界面反应策略来制造高度有序的 SCOF。通过蒸发将一种前体引入到预载有另一种前体的表面，偶联反应被调整为在固-气界面发生。按照这种策略，获得了具有亚胺键的高度有序的蜂窝状 SCOF。在我们的研究中，SCOFs 的受控形成显示了合理设计和合成具有所需功能的 SCOFs 的可能性。

更新日期：2013-07-03

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