Polyoxometalate dendrimers

Zeng, H., Newkome, G. and Hill, C. (2000). Poly(polyoxometalate) Dendrimers Molecular Prototypes of New Catalytic Materials, Angew. Chem. Int. Ed., 39, pp. 1771-1774. 

Because of the considerable variety of materials that can be classified as porous, the discussion will be limited to several groups porous silicates and aluminosilicates, porous metal oxides and related compounds, porous polyoxometalates, metal-organic frameworks, porous carbons, carbon nanotubes, and several hybrid materials. All these materials can be viewed as relatively homogeneous from the electrochemical point of view. Metal and metal oxide nanoparticles, organic metals, fullerenes, and dendrimers, which can also be regarded as nanostructured materials, also displaying distinctive electrochemical features, will not be treated here for reasons of brevity, although their appearance in hybrid materials as modifiers for microporous materials will be discussed. 

A carbosilane dendrimer decorated with Ru(bpy)3 units has been prepared and electrochemical studies reported. " " Newkome has reported first-generation stars with surface polyoxometallate decoration. " A silsesquioxane core has been functionalized and a series of dendritic systems bearing Frechet-type dendritic wedges and pendant Ru(tpy)(bpy)2 decoration has been described. Up to 32 of these units containing didentate tpy ligands have been attached to the surface. ... 

---