Construction of a Rigid Zn Porphyrin-C_(60) Dyad within Dendritic Structure: Dendrimer Effect on Singlet Energy Transfer

摘要

A snowflake-shaped Zn porphyrin dendrimer with a C_(60) terminal was prepared. Covalent linkage of the C_(60) unit results in significant quenching of the Zn porphyrin fluorescence mainly due to energy transfer from the Zn porphyrin core to the C_(60) terminal. Comparison of the energy-transfer efficiency with similar dendrons indicates that the dendritic structure considerably delays the energy-transfer rate.