Mechanochemical Synthesis of Chemically Stable Isoreticular Covalent Organic Frameworks

作者：Bishnu P. Biswal, Suman Chandra, Sharath Kandambeth, Binit Lukose, Thomas Heine, Rahul Banerjee · 发表于：Journal of the American Chemical Society · 年份：2013 · DOI：10.1021/ja4017842 · 被引用次数：1238 · 研究领域：Covalent Organic Framework Applications、Metal-Organic Frameworks: Synthesis and Applications、Luminescence and Fluorescent Materials

Three thermally and chemically stable isoreticular covalent organic frameworks (COFs) were synthesized via room-temperature solvent-free mechanochemical grinding. These COFs were successfully compared with their solvothermally synthesized counterparts in all aspects. These solvent-free mechanochemically synthesized COFs have moderate crystallinity with remarkable stability in boiling water, acid (9 N HCl), and base [TpBD (MC) in 3 N NaOH and TpPa-2 (MC) in 9 N NaOH]. Exfoliation of COF layers was simultaneously observed with COF formation during mechanochemical synthesis. The structures thus obtained seemed to have a graphene-like layered morphology (exfoliated layers), unlike the parent COFs synthesized solvothermally.