Design, syntheses, complexation, and electrochemistry of polynuclear metallodendrimers possessing internal metal binding loci

Extended, branched monomers possessing bipyridine moieties were synthesized by the use of high dilution conditions, then utilized in the assembly of m acromolecular constructs. Dendrimers with four internal bipyridine units at precise locations within the superstructure were transformed into their [R u(bpy')(bpy)(2)](2+) (bpy = 2,2'-bipyridine) complexes. The absorption spec tra and cyclic voltammetry measurements of these polynuclear dendritic bipy ridine ruthenium(Ii) complexes were measured and used to confirm their comp osition.