功能化共价有机框架的合理设计及其对CO捕获的性能

An Shuhao, Xu Ting, Peng Changjun, Hu Jun, Liu Honglai

State Key Laboratory of Chemical Engineering and School of Chemistry & Molecular Engineering, East China University of Science and Technology Shanghai 200237 China

RSC Adv. 2019 Jul 10;9(37):21438-21443. doi: 10.1039/c9ra03487k. eCollection 2019 Jul 5.

We describe the design and synthesis of two new functionalized covalent organic frameworks, named Cz-COF and Tz-COF, by using monomers containing carbazole and benzobisthiazole as building blocks. The resultant materials possess high crystallinity, permanent porosities as well as abundant heteroatom activated sites in the framework. As solid adsorbents, both COFs exhibit excellent CO uptake (11.0 wt% for Cz-COF and 15.4 wt% for Tz-COF), high adsorption selectivity for CO over N and good recyclability.

我们描述了以含咔唑和苯并双噻唑的单体为结构单元，设计并合成两种新型功能化共价有机框架材料，分别命名为Cz-COF和Tz-COF。所得材料具有高结晶度、永久孔隙率以及框架中丰富的杂原子活性位点。作为固体吸附剂，两种共价有机框架材料均表现出优异的一氧化碳吸附性能（Cz-COF为11.0 wt%，Tz-COF为15.4 wt%）、对一氧化碳相对于氮气的高吸附选择性以及良好的可循环性。