Hybrid Organic-Inorganic Polyoxometalates:Functionalization of V~(IV)/V~v Nanosized Clusters to Produce Molecular Capsules

摘要

The assembly of metal-ligand mediated molecular capsules comprises one of the most vibrant areas of chemistry.A key issue for the formation of such metallosupramolecular entities is the identification of pre-organized,kinetically stable building blocks that provide ligand-accessible coordination sites to direct assembly into the desired molecules.Depending on their dimension and composition,the cavities in molecular capsules can provide unique chemical environments,serving,for instance,as reaction vessels or supramolecular containers.Polyoxometalates can form inorganic capsular entities.Their structures can be rationalized by a set of connection modes and emerge as a result of growth reactions from oligonuclear compounds through giant nanosized molecular aggregates,into extended 3D structures.However,the interest in these materials results not only from their remarkable structural characteristics but also from their intrinsic physicochemical attributes which prompt applications in areas including catalysis,electronics,medicine,and environmental sciences.