A glamorous polyoxometalate (POM)-based macromolecule containing a tetrahedral supercluster (Hbiz)12[(P2Co2MoV4O8)2(P2MoV2O8)4(Pb⊂P6Co2MoV2MoVI14O73)4]·ca.129H2O (1) was in-situ self-assembled from three novel components, [Pb⊂P6Co2Mo16O73]8- (P6Co2Mo16), [P2MoV2O8]4+ (P2Mo2) and [P2Co2MoV4O8]18+ (P2Co2Mo4), respectively. To our knowledge, 1...

A new 3D zinc-based metal–organic framework was successfully prepared, which exhibits excellent luminescence sensing performance toward the biomarker 3-nitrotyrosine with a high KSV, low detection limit and rapid response time.

By intentionally involving in situ ligand transformation in the reaction system, two inorganic–organic hybrid polyoxovanadates (POVs), [Co­(HDTBA)­V2O6] (1) and [Ni­(H2O)2(DTBA)2V2O4(OH)2]·4H2O (2), have been synthesized by using a hydrothermal method, where the 3,5-di­[1,2,4]­triazol-1-ylbenzoic acid (HDTBA) ligand originated from in situ hydrolysis of 3,5-di­[1,2,4]­triazol-1-ylbenzonitrile in the self-assembly process. The inorganic layers [Co2(V4O12)] n containing [V4O12]4– circle clusters were linked by HDTBA ligands to yield a 3D framework structure of compound 1. There existed a kind of binuclear [(DTBA)2V2O4(OH)2]2– vanadium cluster grafted directly by two DTBA ligands through the sharing of carboxyl oxygen atoms in compound 2, further extended into a 2D layer by nickel centers. The investigations on the catalytic properties indicated that compounds 1 and 2 as heterogeneous catalysts, especially 2, owned satisfying catalytic performances for catalyzing the selective oxidation of sulfides to sulfoxides in the presence of tert-butyl hydroperoxide as an oxidant, accompanied by excellent conversion of 100% and selectivity of above 99%, providing a promising way for developing inorganic–organic hybrid POVs as effective heterogeneous catalysts for catalyzing the selective oxidation of sulfides.

By changing the polyoxoanions in the same metal-organic system (Ag/ptz), two novel inorganicorganic hybrids: [Ag 10 (ptz, are synthesized under hydrothermal conditions, and characterized by IR spectra, elemental analyses and single crystal X-ray diffraction. Compound 1 and 2 show 3D POMtemplated framework structures. In compound 1, a 2D layer is constructed by ''shield-like'' metalorganic circles templated by P 2 W 18 polyoxoanions, which is extended to a 3D structure by covalent bonds in an interdigital mode. In compound 2, a 3D network is constructed by 2D layers and a ''double bridge-pillar'', the Keggin polyoxoanion templates are enveloped in pairs in nanocages. The influences of polyoxoanion templates on the frameworks are discussed. The electrochemical behavior and luminescent properties for compound 1 and 2 are investigated.