A new coordination polymer,{[CdL(en)]·DMF}n(1,H2L=4-[(8-hydroxy-5-quinolinyl)azo]-benzenesulfonic acid,en=ethylenediamine,DMF=N,N-dimethylformamide),has been solvothermally synthesized and structurally characterized by single-crystal X-ray diffraction,infrared(IR)spectra,elemental analysis,powder X-ray diffractions(PXRD)and thermogravimetric analysis(TGA).Compound 1 crystallizes in monoclinic,space group P21/c with a=14.6525(9),b=13.3917(9),c=11.8838(8),β=101.2290(10)°,V=2287.2(3)3,Z=4,C20H24CdN6O5S,Mr=572.91,Dc=1.664 mg·mm–3,F(000)=1160,μ=1.091 mm–1,R=0.0232and wR=0.0587 for 3597 observed reflections(I>2σ(I)).Compound 1 exhibits a one-dimensional(1D)double-chain structure which is further connected through hydrogen bonding andπ-πinteractions into a three-dimensional(3D)supramolecular network.In addition,it exhibits blue fluorescence at room temperature in the solid state.
The introduction of electrospinning technique in synthesis of supported microporous membranes and films opens bright prospects for mass production and practical applications. This novel and promising strategy has wide suitable range for various substrates with the possibility of large-area processing. We successfully synthesized several kinds of microporous materials into high quality membranes and films on different shaped supports by this method, such as zeolite NaA and pure-silica-zeolite Beta membranes on porous Al2O3 tube, zeolite NaY membrane on stainless steel net and a metal-organic framework Eu(BTC)(H2O)·DMF (JUC-32) film on porous silica disc. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used as characterization means. The results verified the effectiveness of this new approach in fabrication of membranes and films.
A new tetranuclear cyanide-bridged complex [PPh4]2[NiⅡ(CN)4CuⅠ(PPh3)2]2·2CH3OH ([PPh4]+ = tetraphenylphosphine cation, PPh3 = triphenylphosphine) 1 has been synthesized and characterized by IR spectroscopy, elemental analysis, electronic absorption spectra and single-crystal X-ray diffraction. This complex crystallizes in triclinic, space group Pí with a = 10.910(5), b = 15.777(7), c = 18.275(8), α = 68.752(12), β = 79.776(13), γ = 81.400(14)°, NiCuC65H50N4OP3, Mr = 1122.25, V = 2873(2)3 , Z = 2, Dc = 1.293 g/cm3, F(000) = 1156, μ = 0.826 mm-1, the final R = 0.0755 and wR = 0.2155 for 7324 observed reflections (I > 2σ(I)). The title compound exhibits a discrete square tetranuclear structure and a cubic order NLO property.
A novel porous aromatic framework, PAF-8, derived from tetraphenylsilane as basic building unit, was successfully synthesized via Friedel–Crafts alkylation reaction. This PAF material had high thermal stability as well as high surface area(785 m^2g^(-1)) calculated from the Brunauer–Emmett–Teller(BET)model. Meanwhile, PAF-8 possessed high performances in gas sorption and especially for CO_2 separation.
A new metal–organic framework {[Zn_2(bpta)(bpy-ee)(H_2O)_2]·x solve}_n(1)(H_4bpta = biphenyl-2,20,6,60-tetracarboxylic acid and bpy-ee = 1,2-bis(4-pyridyl)ethylene) has been obtained under hydrothermal condition, and structurally characterized by single-crystal X-ray diffraction. Complex 1 reveals a threedimensional(3D) ‘‘pillar-layered'' framework with non-flexible linker, in which some different structure characters can be found compared to that of some related other ‘‘pillar-layered'' MOFs based on flexible pillar linkers. It demonstrates the impact of the flexibility of pillar linker on the final structure in this system. In addition, the selective CO_2 adsorption performance of 1 was also investigated.
