Shrestha Binod Babu, Wakimoto Kazuki, Wang Zhenggong, Isfahani Ali Pournaghshband, Suma Tomoya, Sivaniah Easan, Ghalei Behnam
Institute for Integrated Cell-Material Sciences (iCeMS), Kyoto University 606-8501 Kyoto Japan
RSC Adv. 2018 Feb 7;8(12):6326-6330. doi: 10.1039/c7ra12719g. eCollection 2018 Feb 6.
Microporous polyimides (PIM-PIs, KAUST-PIs) and polymers containing Tröger's base (TB) derivatives with improved permeability and selectivity have great importance for separation of environmental gas pairs. Despite the tremendous progress in this field, facile synthesis of microporous polymers at the industrial scale designing new monomers is still lacking. In this study, a new potential approach for large scale synthesis of spirobisindane diamine (DAS) (3) has been reported from commercially available 5,5',6,6'-tetrahydroxy-3,3,3',3'-tetramethyl-1,1'-spirobisindane (TTSBI) and 3,4-difluoronitrobenzene. A series of DAS diamine based microporous polyimides were also synthesized. The resulting polymer membranes showed high mechanical and thermal properties with tunable gas separation performance.
微孔聚酰亚胺（PIM-PIs，KAUST-PIs）以及含有特罗格碱（TB）衍生物且具有改善的渗透性和选择性的聚合物对于环境气体对的分离具有重要意义。尽管该领域取得了巨大进展，但在工业规模上简便合成微孔聚合物以及设计新单体方面仍存在不足。在本研究中，已报道了一种从市售的5,5',6,6'-四羟基-3,3,3',3'-四甲基-1,1'-螺双茚满（TTSBI）和3,4-二氟硝基苯大规模合成螺双茚满二胺（DAS）（3）的新潜在方法。还合成了一系列基于DAS二胺的微孔聚酰亚胺。所得的聚合物膜表现出高机械性能和热性能，且气体分离性能可调。
