The Assembly of an All-Inorganic Porous Soft Framework from Metal Oxide Molecular Nanowires

An all-inorganic soft framework is rare but interesting for both fundamental research and practical applications. Here, an all-inorganic soft framework based on a transition metal oxide is reported. The periodic connection of a one-dimensional anionic tungstoselenate molecular wire building block with a Co^II ion is used to construct the crystalline material. The crystal structure of the material was determined by high-angle annular dark-field scanning transmission electron microscopy combined with several characterization techniques. The soft framework of the material enables water adsorption/desorption with a change in its structure, leading to a high level of water adsorption. The framework of the material is flexible, and the structure of the molecular wire building block is stable during the water adsorption/desorption process.