Song-De Han

Template synthesis and photochromism of a layered zinc diphosphonate

A zinc diphosphonate with protonated 2,4,6-tri(4-pyridyl)-1,3,5-triazine (H3TPT) as the template was hydrothermally prepared. The host layered framework was composed of 1-hydroxyethylidenediphosphonate and zinc ions. The guest H3TPT locates between the adjacent layers, acting as the charge balancer and template. The title compound features rapid photochromism upon irradiation with sunlight or UV light at ambient temperature.

An open-framework beryllium phosphite with extra-large 18-ring channels

A novel open-framework beryllium phosphite, [H4tren][Be6(HPO3)8]·(H2O)3 (1, tren = tris(2-aminoethyl)amine), was synthesized under solvothermal conditions. Its structure features a 3D interrupted network with a low density (1.594 g cm−3), and 1 represents the first example of a beryllium phosphite material with extra-large 18-ring channels.

Ligand-oriented assembly of a porous metal–organic framework by [CuI4I4] clusters and paddle-wheel [CuII2(COO)4(H2O)2] subunits

A novel porous mixed-valence copper–organic framework based on CuI4I4 clusters and paddle-wheel [CuII2(COO)4(H2O)2] moieties was synthesized through a ligand-oriented assembly. The mixed-valence Cu(I)–Cu(II) complex features the coexistence of micro-sized cages and 1D channels and its sorption behaviour has been investigated.

An inorganic–organic hybrid framework from the assembly of an electron-rich diphosphonate and electron-deficient tripyridyl moiety

The combination of an electron-rich zinc diphosphonate layer and electron-deficient 2,4,6-tri(4-pyridyl)-1,3,5-triazine (TPT) generates a 3D inorganic–organic hybrid with an [–ED–EA–ED–EA–] arrangement (ED = electron donor and EA = electron acceptor), which exhibits a wide and rapid photoresponse upon exposure to the stimulus of sunlight, UV light and X-rays at ambient temperature. Notably, the coloration time is 0.1 s when exposed to UV light (320 nm) generated from a Xe-lamp (150 W).

Inorganic–organic hybrid zinc phosphites with fluorescence/phosphorescence dual emission performances

An innovative and feasible strategy has been explored to prepare stable and highly effective room temperature fluorescence/phosphorescence dual emission materials, in which N-containing organic aromatic structure-directing agents were coordinated to metal phosphite frameworks.

Cluster-Based Anionic Template Assisted in the Formation of 3D Cobalt Cationic Framework: A Bridge Connecting MOFs and Halometallates?

The marriage of metal-organic framework (MOF) and metal halide gives birth to a novel 3D cationic MOF, [Co(tib)2]·[Cu4I6] (1, tib = 1,3,5-tris(1-imidazolyl)benzene), templated by anionic iodocuprate cluster (CuI4I62-). 1 features a (3,6)-connected network with CoII and tib moieties as six-connected and three-connected nodes, respectively. It is notable that the template (iodocuprate cluster) in 1 is distinct from the widely utilized species such as organic solvents, ionic liquids, organic amines, and surfactants. This Communication provides a new avenue to fabricate halometallate-directed MOF via incorporating halometallate into MOF. The photocatalytic activity toward the degradation of methyl orange in aqueous solution under visible-light irradiation has also been studied.

Syntheses and Characterizations of Three Organically Templated Zinc Phosphites with 12-Ring Channels

Three new zinc phosphites, [Hapy]2[Zn3(HPO3)4] (1; apy = 4-aminopyridine), [H2hepip][Zn3(HPO3)4]·(H2O)0.25 (2; hepip = N-(2-hydroxyethyl)piperazine), and [H2tmdab][Zn3(HPO3)4] (3; tmdab = N,N,N′,N′-tetramethyl-1,3-diaminobutane), have been synthesized and characterized by infrared spectroscopy, elemental analysis, thermogravimetric analysis, and powder and single-crystal X-ray diffraction. The frameworks of 1–3 are constructed from 4-connected ZnO4 tetrahedra and 3-connected HPO3 pseudo pyramids with distinct connection mode driven by different organic amine templates. There are 12-membered ring (12-MR) and 8-MR apertures in the (3,4)-connected three-dimensional architecture of 1–3. It is notable that helical chains are observed in the framework of compound 3.