Electron Beam Irradiation as a General Approach for the Rapid Synthesis of Covalent Organic Frameworks under Ambient Conditions.
Electron Beam Irradiation as a General Approach for the Rapid Synthesis of Covalent Organic Frameworks under Ambient Conditions.
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DOI：
10.1021/jacs.0c03941
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发表时间：
2020-05
影响因子：
15
通讯作者：
Mingxing Zhang;Junchang Chen;Shitong Zhang;Xiaoqi Zhou;Linwei He;Matthew V. Sheridan;Mengjia Yuan-Mengjia
中科院分区：
文献类型：
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作者：
Mingxing Zhang;Junchang Chen;Shitong Zhang;Xiaoqi Zhou;Linwei He;Matthew V. Sheridan;Mengjia Yuan-Mengjia
晶体多孔材料，如共价有机框架（COFs）是解决工业过程中催化和分离挑战的先进材料。它们的合成路线通常需要高温、高压封闭系统和长反应时间，这阻碍了它们的工业应用。在这里，我们使用一种传统上不被察觉的策略，通过控制接收剂量的电子束照射来组装COFs，这与之前的观察结果形成鲜明对比，即辐射会破坏固体的结晶度。电子束辐照合成可在常温条件下在数分钟内完成，且工艺适于大规模生产。对反应物的强烈和有针对性的能量输入导致了新的反应途径，有利于COFs的形成，并且产量接近定量。该策略不仅适用于已知的cof，也适用于传统方法难以获得的新的柔性cof系列。
Crystalline porous materials such as covalent organic frame-works (COFs) are advanced materials to tackle challenges of catalysis and separation in industrial processes. Their synthetic routes often require elevated temperatures, closed systems with high pressure, and long reaction time which hampers their in-dustrial applications. Here, we use a traditionally unperceived strategy to assemble COFs by electron beam irradiation with controlled received dosage, contrasting sharply with the previ-ous observation that radiation damages the crystallinity of sol-ids. Such synthesis by electron beam irradiation can be achieved under ambient condition within minutes, and the pro-cess is amendable for large-scale productions. The intense and targeted energy input on reactants leads to new reaction path-ways that favor COFs formation with nearly quantitative yields. This strategy is applicable not only to known COFs, but also to new series of flexible COFs that are difficult to obtain using traditional methods.