Jia Qiong, Ma Xiaohua, Chen Hanyuan, Li Xiaodong, Huang Mu-Hua
School of Materials Science and Engineering, Experimental Center for Advanced Materials, Beijing Institute of Technology, No.5, Zhongguancun South Street, Beijing 100081, P. R. China.
State Key Laboratory of Separation Membranes and Membrane Processes, National Center for International Joint Research on Membrane Science and Technology, Tiangong University, Tianjin 300387, P. R. China.
ACS Macro Lett. 2023 Oct 17;12(10):1358-1364. doi: 10.1021/acsmacrolett.3c00439. Epub 2023 Sep 21.
Porous organic polymers (POPs) have demonstrated promising task-specific applications due to their structure designability and thus functionality. Herein, an unusual 3,4-polymerization on 1,2,5-trisubstituted pyrroles has been developed to give linear polypyrrole-3,4 in high efficiency, with Mn of 20000 and PDI of 1.7. This novel polymerization technique was applied to prepare a series of polypyrrole-based POPs (PY-POP-1-4), which exhibited high BET surface areas (up to 762 m g) with a meso-micro-supermicro hierarchically porous structure. Furthermore, PY-POPs were doped in the mixed matrix membranes based on the polysulfone matrix to enhance the gas permeability and gas pair selectivity, with H/N selectivity up to 84.6 and CO/CH and CO/N selectivity up to 46.8 and 39.6.
多孔有机聚合物（POPs）因其结构可设计性以及由此产生的功能性，已在特定任务应用中展现出广阔前景。在此，一种针对1,2,5 - 三取代吡咯的非常规3,4 - 聚合反应被开发出来，可高效制备线性聚吡咯 - 3,4，其数均分子量为20000，分散度为1.7。这种新型聚合技术被用于制备一系列基于聚吡咯的POPs（PY - POP - 1 - 4），这些材料呈现出高达762 m²/g的BET比表面积，具有介孔 - 微孔 - 超微孔分级多孔结构。此外，将PY - POPs掺杂到基于聚砜基质的混合基质膜中，以提高气体渗透性和气体对选择性，H₂/N₂选择性高达84.6，CO₂/CH₄和CO₂/N₂选择性分别高达46.8和39.6。
