Key Laboratory of Cluster Science, Ministry of Education of China, School of Chemistry, Beijing Institute of Technology, 5 South Zhongguancun Street, Beijing, 100081 (P.R. China) http://bowang.bit.edu.cn/english/index.htm.
Angew Chem Int Ed Engl. 2015 Mar 27;54(14):4259-63. doi: 10.1002/anie.201500207. Epub 2015 Mar 3.
Metal-organic frameworks (MOFs) are a promising class of nanoporous polymeric materials. However, the processing of such fragile crystalline powders into desired shapes for further applications is often difficult. A photoinduced postsynthetic polymerization (PSP) strategy was now employed to covalently link MOF crystals by flexible polymer chains, thus endowing the MOF powders with processability and flexibility. Nanosized UiO-66-NH2 was first functionalized with polymerizable functional groups, and its subsequent copolymerization with monomers was easily induced by UV light under solvent-free and mild conditions. Because of the improved interaction between MOF particles and polymer chains, the resulting stand-alone and elastic MOF-based PSP-derived membranes possess crack-free and uniform structures and outstanding separation capabilities for Cr(VI) ions from water.
金属-有机骨架（MOFs）是一类很有前途的多孔聚合材料。然而，将这种易碎的结晶粉末加工成所需的形状以用于进一步的应用通常是困难的。现在采用光诱导后合成聚合（PSP）策略通过柔性聚合物链共价连接 MOF 晶体，从而赋予 MOF 粉末加工性和柔韧性。首先用可聚合官能团功能化纳米尺寸的 UiO-66-NH2，然后在无溶剂和温和条件下通过紫外光很容易诱导其与单体共聚。由于 MOF 颗粒与聚合物链之间相互作用得到改善，所得独立的和弹性的基于 MOF 的 PSP 衍生膜具有无裂纹和均匀的结构以及从水中分离 Cr(VI)离子的出色性能。
