Sheng-Han Lo

A mesoporous aluminium metal–organic framework with 3 nm open pores

A mesoporous metal–organic framework of [Al(OH)(SDC)] (CYCU-3) (H2SDC = 4,4′-stilbenedicarboxylic acid) was synthesised by using Al(III) ions and H2SDC under solvothermal conditions. The structure forms 3D mesoporous frameworks in which the carboxylate oxygen on each terminus of the ligand forms octahedral AlO6 by corner-sharing. As verified by N2 sorption measurements, the CYCU-3 exhibits the largest pore volume and open channels (3.0 nm) in the system of Al-MOFs reported to date. This mesoporous Al-MOF also displays highly porous properties and uptake capacities of H2 (8.22 mmol g−1 at 77 K and 1 atm) and CO2 (2.83 mmol g−1 CO2 at 273 K and 1 atm).

Microwave synthesis and gas sorption of calcium and strontium metal–organic frameworks with high thermal stability

Two new calcium and strontium metal–organic frameworks [Ca(SBA)] (CYCU-1) and [Sr(SBA)] (CYCU-2) were prepared by microwave-assisted reactions. Both rigid frameworks are thermally stable up to about 450 °C. As verified by N2, CO2, and H2sorption measurements, the thermally activated CYCU-1 and CYCU-2 exhibit significant microporosity.

Poly[bis­(μ2-4,4′-bipyridine)­bis­(3-nitro­benzoato)nickel(II)]

The crystal structure of the title complex, [Ni(C7H4NO4)2(C10H8N2)2]n, exhibits a two-dimensional network, which is built up from slightly distorted NiN4O2 polyhedra (2 symmetry), bipyridine ligands, and carboxylate anions. The NiII atoms are six-coordinated by two O atoms of two monodentate carboxylate anions and four N atoms from bipyridine ligands and are connected into layers by the 4,4′-bipyridine ligands.

Synthesis, Crystal Structure, and Luminescence Properties of a New Calcium(II) Coordination Polymer Based on L-Malic Acid

A new calcium coordination polymer [Ca(HL-MA)]n (H3L-MA = L-malic acid) has been solvothermally synthesized. The structure of the newly synthesized complex has been determined by single-crystal X-ray diffraction analysis and further characterized by elemental analysis, reflectance UV-Vis & IR spectra, powder X-ray diffraction (PXRD), and thermogravimetric analysis (TGA). The single crystal structure analysis showed that the complex forms three-dimensional framework. The new Ca(II) complex has displayed very high thermal stability which was inferred from TGA and PXRD results. As far as the optical property of the new complex is concerned, the complex emitted its own characteristic sensitized luminescence.