Bridging ligand replacement in zeolitic imidazolate frameworks, ZIF-8 and ZIF-67, by 1,2,3-triazole was investigated. A complete substitution of 2-methylimidazole by 1,2,3-triazole resulted in a topological transformation of the parent framework from a sodalite (SOD) network to a diamond (DIA) network.

Molecular gates mounted on MOFs act like nanovalves and control diffusion of molecules.

A 'lawn-like' distribution of interconnected zinc oxide nanorods, coated with a metalorganic compound based on zeolitic imidazolate frameworks-ZIF-8 was prepared on microstructured thin-film interdigitated Pt-electrodes forming ZnO@ZIF-8 core-shell heterostructures and investigated as gas sensor material in relation to the identical, but uncovered pure ZnO-layer. This composite combines the gas sensing properties of the metal oxide ZnO with the specific properties of the metal organic framework material which result in a distinct change of the conditions of gas sensing at the ZnO/ZIF-8-interface. Herein, for the first time it is reported that as prepared ZnO@ZIF-8 composite material is an attractive choice to reduce the cross-sensitivity to water vapour (humidity) in the gas sensing response towards propene and ethene. The observed change of sensitivity in relation to uncovered ZnO is discussed to be due to (i) the specific interaction of the ZIF-8 at the interface with the ZnO taking influence on the gas reaction processes, (ii) the diffusivity of ZIF-8 for the different gas components, and (iii) the sorption behaviour of the used gases at the ZnO interface and inside the ZIF-8 material.

We report two novel 3D porous metal‐organophosphonate metal organic frameworks (MOFs) [{Cu(4, 4’‐bpy)0.5(1,4‐NDPA‐H2)] (1), [{Cu2(4,4’‐bpy)0.5}(1,4‐NDPA)] (2) and a non‐porous [{Cu(4, 4’‐bpy)}(2,6‐NDPA‐H2)] (3) constructed using the structurally rigid 1,4‐naphthalenediphosphonic acid (1,4‐NDPA‐H4) and 2,6‐naphthalenediphosphonic acid (2,6‐NDPA‐H4). 1 and 2 exhibit high surface areas obtained using the structurally rigid and short aromatic organophosphonate linkers with copper. The compound 1 has been further analyzed by TGA and Quantum Design PPMS vibrating sample magnetometer.