Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Guangdong 515063 (P. R. China).
Angew Chem Int Ed Engl. 2015 May 18;54(21):6190-5. doi: 10.1002/anie.201501081. Epub 2015 Apr 7.
Biological function arises by the assembly of individual biomolecular modules into large aggregations or highly complex architectures. A similar strategy is adopted in supramolecular chemistry to assemble complex and highly ordered structures with advanced functions from simple components. Here we report a series of diamond-like supramolecular frameworks featuring mesoporous cavities, which are assembled from metal-imidazolate coordination cages and various anions. Small components (metal ions, amines, aldehydes, and anions) are assembled into the hierarchical complex structures through multiple interactions including covalent bonds, dative bonds, and weak C-H⋅⋅⋅X (X=O, F, and π) hydrogen bonds. The mesoporous cavities are large enough to trap organic dye molecules, coordination cages, and vitamin B12. The study is expected to inspire new types of crystalline supramolecular framework materials based on coordination motifs and inorganic ions.
生物功能是通过将单个生物分子模块组装成大型聚集体或高度复杂的结构而产生的。在超分子化学中，也采用了类似的策略，即用简单的组件组装具有复杂和高度有序结构以及先进功能的化合物。在这里，我们报道了一系列具有介孔空腔的类金刚石超分子框架，这些框架是由金属-咪唑配位笼和各种阴离子组装而成的。小分子组件（金属离子、胺、醛和阴离子）通过包括共价键、配位键和弱 C-H···X（X=O、F 和 π）氢键在内的多种相互作用组装成具有层次结构的复杂结构。介孔空腔足够大，可以捕获有机染料分子、配位笼和维生素 B12。这项研究有望激发基于配位基元和无机离子的新型结晶超分子框架材料。
