Mechanochemical Synthesis of Chemically Stable Isoreticular Covalent Organic Frameworks
Mechanochemical Synthesis of Chemically Stable Isoreticular Covalent Organic Frameworks
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DOI：
10.1021/ja4017842
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发表时间：
2013-04-10
影响因子：
15
通讯作者：
Banerjeet, Rahul
中科院分区：
文献类型：
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作者：
Biswal, Bishnu P.;Chandra, Suman;Banerjeet, Rahul
采用室温无溶剂机械化学研磨法合成了三种热稳定性和化学稳定性良好的等网格共价有机骨架材料。这些COFs成功地比较了它们的溶剂热合成的同行在各个方面。这些无溶剂机械化学合成的COF具有中等结晶度，在沸水、酸（9 N HCl）和碱中具有显著的稳定性[TpBD（MC）在3 N NaOH中和TpPa-2（MC）在9 N NaOH中]。在机械化学合成过程中，COF层的剥落与COF的形成同时观察到。由此获得的结构似乎具有石墨烯样层状形态（剥离层），不同于溶剂热合成的母体COF。
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.