Solvent-Free Synthesis of C=N Linked Two-Dimensional Covalent Organic Frameworks,Macromolecular Rapid Communications

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Solvent-Free Synthesis of C=N Linked Two-Dimensional Covalent Organic Frameworks
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2022-10-25 , DOI: 10.1002/marc.202200722
Yushu Zhang ₁ , Tianhui Mao ₁ , Liqin Hao ₁ , Tiankai Sun ₁ , Tonghai Wang ₁ , Peng Cheng _{1,

2} , Yao Chen _{1,

3} , Zhifang Wang _{1,

2} , Zhenjie Zhang _{1,

2}

Affiliation

Covalent organic frameworks (COFs) are an emerging class of porous crystalline polymers with well-defined structures and tunable functionalities, which have fascinating applications in a wide range of fields. However, the synthetic procedures of COFs are mainly confined to the solvothermal synthesis method which usually requires harsh experimental conditions. In this work, an effective solvent-free synthesis method to construct a series of two-dimensional (2D) COFs including imine-linked, azine-linked, β-ketoenamine-linked, which avoids the complicated solvent screening process and most of the disadvantages of solvothermal methods is developed. The crystallinity and porosity of these COFs are comparable to those prepared by traditional solvothermal routes. What's more, the advantages of the solvent-free method enable the production of gram-scale of those 2D COFs through a one-pot reaction, demonstrating high industrial application potentials.

中文翻译：

C=N连接的二维共价有机骨架的无溶剂合成

共价有机框架 (COF) 是一类新兴的多孔结晶聚合物，具有明确的结构和可调谐的功能，在广泛的领域有着令人着迷的应用。然而，COFs的合成程序主要局限于溶剂热合成法，通常需要苛刻的实验条件。在这项工作中，一种有效的无溶剂合成方法构建了一系列二维 (2D) COF，包括亚胺连接、吖嗪连接、β-酮烯胺连接，避免了复杂的溶剂筛选过程和溶剂热法的大部分缺点。这些 COF 的结晶度和孔隙率可与传统溶剂热法制备的相媲美。更重要的是，无溶剂方法的优势使得这些二维COFs可以通过一锅反应进行克级生产，具有很高的工业应用潜力。

更新日期：2022-10-25

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