Recent Advances in Zeolite-like Cluster Organic Frameworks.

During the past decade, researches on the design and syntheses of zeolite-like metal-organic frameworks (ZMOFs) have been greatly developed. As an important subclass of ZMOFs, zeolite-like cluster organic frameworks (ZCOFs) built from 4-connected metal cluster secondary building units (SBUs) and appropriate linear organic ligand bridges have attracted sustained interests because such materials not only integrate the merits of inorganic zeolites, ZMOFs and metal clusters, such as charming topologies, high surface areas, extra-large cavities and channels, structural tunability as well as unique physicochemical properties from various metal clusters, but also open up a new avenue to design and fabricate hybrid zeolite-like materials which have many potential applications in material sciences. In this review, the recent development of ZCOFs is summarized by classifying ZCOFs into four categories according to the composition of the SBUs: (1) ZCOFs based on metal-halide cluster SBUs; (2) ZCOFs based on metal-oxo cluster SBUs; (3) ZCOFs based on metal-chalcogen cluster SBUs and (4) ZCOFs based on mixed types of metal cluster SBUs. Besides, the present challenges on design and syntheses of ZCOFs and the vast potential of this area are also discussed.