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A new porphyrin-based microporous MOF, {Mn(II)0.5[Mn(II)4Cl(Mn(III)Cl-ttzpp)2(H2O)4]}·(DEF)20·(CH3OH)18·(H2O)12 (UTSA-57), has been constructed from {5,10,15,20-tetrakis[4-(2,3,4,5-tetrazolyl)phenyl]porphyrinato} manganese(III) chloride as the metalloligand. The MOF adopts the rare scu topology with one-dimensional square nanotube-like channels of about 20 Å. UTSA-57a exhibits permanent porosity and displays moderately high performance for C2H2/CH4 separation at room temperature. [ABSTRACT FROM AUTHOR]

Three three-dimensional coordination polymers, namely, [NH2(CH3)2][Co2(MDIP)(OH)(H2O)]·C3H7NO·H2O (1), [NH2(CH3)2]2[Mn3(MDIP)2]·2C3H7NO (2), and [NH2(CH3)2][Mg3(MDIP)(HMDIP)(C3H7NO)]·4H2O (3) (DMF = N,N′-dimethylformamide), have been synthesized by the solvothermal reaction of Co(ii), Mn(ii), or Mg(ii) salts with methylenediisophthalic acid (H4MDIP). All compounds have been characterized by thermogravimetric analysis, IR spectroscopy, elemental and single-crystal X-ray diffraction analyses. Complexes 1–3are anionic frameworks with [NH2(CH3)2]+ions occupying the voids, built upon tetra-, tri- and asymmetrical trimetallic cores, respectively. In particular, the asymmetrical trinuclear Mg(ii) unit in complex 3was scarcely observed. Topological analyses show that the three compounds possess binodal (4,8)-connected alb topology with a Schläfli symbol of (410.614.84)(45.6)2. Magnetic investigations indicate that antiferromagnetic couplings are dominant in compounds 1and 2. [ABSTRACT FROM AUTHOR]

A novel metal–organic framework [Cu3(m-TATB)2Py(CH3OH)2] (1) constructed of a triazine-based trigonal-planar ligand, 3,3′,3″-s-triazine-2,4,6-triyltribenzoate (m-H3TATB), has been synthesized and structurally characterized. Compound 1features three-dimensional (3D) channels and cavities together, and exhibits high carbon dioxide sorption at normal pressure. [ABSTRACT FROM AUTHOR]

A novel metal–organic framework with unprecedented interweaving of coaxial single-helical and equal double-helical chains of opposite chirality, which features a super-connective helix simultaneously tangling with eight helices, was reported. [ABSTRACT FROM AUTHOR]

The NIR-luminescent ErQ3nano-/microstructures have been successfully synthesized through a simple microemulsion route. Various morphologies, including nanorods, bundles, and urchins, have been achieved by tuning the fundamental experimental parameters, such as the organic solvents and the concentration of cetyltrimethylammonium bromide (CTAB). The results from SEM images indicate that a solvent with lower polar and higher boiling-point would result in nanorods, while higher concentrations of CTAB and solvents with higher polar and lower boiling-point would prefer the formation of bundles or urchins. The molecular formula of the products being ErQ3can be deduced by the elemental analysis and thermal gravimetric analysis (TGA) and can be further confirmed by the X-ray powder diffraction (XRD) and Fourier-transform infrared spectra (FTIR). A self-assembly growth mechanism has been proposed to explain our system based on the obtained results. Following excitation of the absorption of the ligand, all the ErQ3nano-/microstructures show characteristic emissions centered at 1534 nm due to the typical 4I13/2→ 4I15/2transition of the Er3誉. In addition, the luminescence properties of the as-obtained samples are dependent on the morphologies and sizes of the ErQ3nano-/microstructures, which is a higher dimensionality, leading to stronger luminescence intensity. [ABSTRACT FROM AUTHOR]