Supramolecular complex of zinc porphyrin dendrimer with many artificial photosynthetic reaction centers and pyridylnaphthalenediimide

摘要

A light energy conversion system having a multiplicity of artificial photosynthetic reaction centers and exhibiting a high light-harvesting capability and charge separation capability, constructed by the use of a zinc porphyrin dendrimer supramolecular complex formed by the use of a coordinate bond. Using a zinc porphyrin dendrimer as a spherical zinc porphyrin oligomer, a supramolecule with pyridylnaphthalenediimide was constructed. With respect to the zinc porphyrin dendrimer/pyridylnaphthalenediimide supramolecule, when photoexcitation of the zinc porphyrin was realized, a charge-separated state was generated by photoinduced electron transfer and the lifetime thereof was strikingly long, up to 830 microseconds.