Supramolecular assembly of light harvesting porphyrin hexamer

Pentameric porphyrin hosts, in which a TPP type porphyrin was attached to four OEP type zinc porphyrins through a 1,3-phenylene spacer, were synthesized. Its spectroscopic investigations suggest that the host binds a one molecule of meso-tetrapyridyl porphyrin by coordination to the central metals of the peripheral four zinc porphyrins to constitute a light harvesting porphyrin hexameric assembly.