Dai Dihua, Yang Jie, Zou Yong-Cun, Wu Jia-Rui, Tan Li-Li, Wang Yan, Li Bao, Lu Tong, Wang Bo, Yang Ying-Wei
State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, International Joint Research Laboratory of Nano-Micro Architecture Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China.
State Key Laboratory of Solidification Processing, Center for Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU), 127 Youyi West Road, Xi'an, 710072, P. R. China.
Angew Chem Int Ed Engl. 2021 Apr 12;60(16):8967-8975. doi: 10.1002/anie.202015162. Epub 2021 Mar 5.
Incorporating synthetic macrocycles with unique structures and distinct conformations into conjugated macrocycle polymers (CMPs) can endow the resulting materials with great potentials in gas uptake and pollutant adsorption. Here, four CMPs (CMP-n, n=1-4) capable of reversibly capturing iodine and efficiently separating carbon dioxide are constructed from per-triflate functionalized leaning tower[6]arene (LT6-OTf) and [2]biphenyl-extended pillar[6]arene (BpP6-OTf) via Pd-catalyzed Sonogashira-Hagihara cross-coupling reaction. Intriguingly, owing to the appropriate cavity size of LT6-OTf and the numerous aromatic rings in the framework, the newly designed CMP-4 possesses an outstanding I affinity with a large uptake capacity of 208 wt % in vapor and a great removal efficiency of 94 % in aqueous solutions. To our surprise, with no capacity to accommodate nitrogen, CMP-2 constructed from BpP6-OTf is able to specifically capture carbon dioxide at ambient conditions.
将具有独特结构和不同构象的合成大环化合物引入共轭大环聚合物（CMPs）中，可使所得材料在气体吸收和污染物吸附方面具有巨大潜力。在此，通过钯催化的Sonogashira-Hagihara交叉偶联反应，由全三氟甲磺酸官能化的斜塔[6]芳烃（LT6-OTf）和[2]联苯扩展的柱[6]芳烃（BpP6-OTf）构建了四种能够可逆捕获碘并有效分离二氧化碳的CMPs（CMP-n，n = 1-4）。有趣的是，由于LT6-OTf具有合适的空腔尺寸以及骨架中存在众多芳香环，新设计的CMP-4对碘具有出色的亲和力，在蒸汽中的吸收容量高达208 wt％，在水溶液中的去除效率高达94％。令我们惊讶的是，由BpP6-OTf构建的CMP-2虽然没有容纳氮的能力，但能够在环境条件下特异性捕获二氧化碳。
