Supramolecular Assembly Using Peripheral Pyridyl-Substituents

Supramolecular Assembly Using Peripheral Pyridyl-Substituents 

Coordinating substituents can be used to assemble supramolecular systems without blocking the metalloporphyrin center. This is the most interesting approach when the catalytic and electrocatalytic properties are considered, since these processes generally involve the coordination of the substrate to the central metal ion. 

The assembly of supramolecular structures by peripheral coordination of transition metal complexes is a very versatile approach, as will be shown below using essentially the same pyridylporphyrins presented in the previous section. Many intrincate new architectures can be built-up generating exquisite nanosized 

A related class of compounds has been derived by using porphyrins connected to polypyridines such as 2,2 -bipyridine, 1,10-phenantholine and 2,2 6, 2 -terpyridine. These chelating ligands form thermodynamically more stable and inert transition metal complexes than the pyridine ligand, and such porphyrins have been extensively explored for the assembly of photochemically active supramolecular systems, especially by Sauvage et The oblique 

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Supramolecular Assembly Using Peripheral Pyridyl-Substituents... 

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