Minute and Large-Scale Synthesis of Covalent-Organic Frameworks in Water at Room Temperature by a Two-Step Dissolution–Precipitation Method
Minute and Large-Scale Synthesis of Covalent-Organic Frameworks in Water at Room Temperature by a Two-Step Dissolution–Precipitation Method
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DOI：
10.1021/acs.chemmater.3c01220
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发表时间：
2023-07
影响因子：
8.6
通讯作者：
L. Guo;Qing-yun Zhang;Zhiwu Yu;R. Krishna;Feng Luo
中科院分区：
文献类型：
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作者：
L. Guo;Qing-yun Zhang;Zhiwu Yu;R. Krishna;Feng Luo
低成本、绿色、大规模、室温和快速合成共价有机框架（COF）代表了由于科学和工业利益而高度期望的问题，但仍然是一个很大的挑战。溶剂热法制备COFs的缺点严重制约了其工业应用。本文报道了通过两步溶解-沉淀（DP）策略水相合成酮烯胺和亚胺连接的COFs。令人印象深刻的是，使用这种DP方法，我们可以在理想的合成过程中制备五个酮烯胺连接的COF和两个亚胺连接的COF，其中室温，5分钟的反应时间，和大规模的产品用于一批反应，在不存在乙酸的情况下。这些COFs显示出令人印象深刻的高结晶度和孔隙率和碘和铀酰捕获的潜在应用。这一理想的合成路线为制备具有实际工业应用价值的功能性COFs奠定了基础。
Low-cost, green, large-scale, room-temperature, and fast synthesis of covalent organic frameworks (COFs) represents a highly desirable issue, due to both scientific and industrial interests, but remains a big challenge. The disadvantage of the established solvothermal method for COFs is now seriously restricting their practical industrial applications. We report herein aqueous synthesis of ketoenamine- and imine-linked COFs through a two-step dissolution–precipitation (DP) strategy. Impressively, using this DP method, we can prepare five ketoenamine-linked COFs and two imine-linked COFs in an ideal synthetic process with room temperature, 5 min reaction time, and large-scale products for one batch reaction, in the absence of acetic acid. These COFs show impressively high crystallinity and porosity and potential application in iodine and uranyl capture. This ideal synthetic route will pave a powerful methodology for making functional COFs with the value of practical industrial applications.