Gao Ruidong, Zhang Guang, Lu Fanli, Chen Long, Li Yang
Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University, Tianjin, China.
College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, China.
Front Chem. 2021 May 10;9:687183. doi: 10.3389/fchem.2021.687183. eCollection 2021.
Conjugated microporous polymers (CMPs) with robust architectures, facilely tunable pore sizes and large specific surface areas have emerged as an important class of porous materials due to their demonstrated prospects in various fields, e.g. gas storage/separation and heterogeneous catalysis. Herein, two new pyrrole-based CMPs with large specific surface areas and good stabilities were successfully prepared by one-step oxidative self-polycondensation of 1,2,4,5-tetra (pyrrol-2-ly)benzene or 1,3,5-tri (pyrrol-2-ly)benzene, respectively. Interestingly, both CMPs showed very high catalytic activity toward Knoevenagel condensation reaction, which was attributed to the inherent pore channels, high specific surface areas and abundant nitrogen sites within CMPs. Additionally, both CMPs displayed excellent recyclability with negligible degradation after 10 cycles. This work provides new possibilities into designing novel nitrogen-rich high-performance heterogeneous catalysts.
具有坚固结构、孔径易于调节且比表面积大的共轭微孔聚合物（CMPs），由于其在气体存储/分离和多相催化等各个领域展现出的前景，已成为一类重要的多孔材料。在此，分别通过1,2,4,5-四（吡咯-2-基）苯或1,3,5-三（吡咯-2-基）苯的一步氧化自缩聚反应，成功制备了两种具有大比表面积和良好稳定性的新型吡咯基CMPs。有趣的是，两种CMPs对Knoevenagel缩合反应均表现出非常高的催化活性，这归因于CMPs内部固有的孔道、高比表面积和丰富的氮位点。此外，两种CMPs均显示出优异的可回收性，在10次循环后降解可忽略不计。这项工作为设计新型富氮高性能多相催化剂提供了新的可能性。
