Construction of a rigid Zn porphyrin-C60 dyad within dendritic structure: dendrimer effect on singlet energy transfer.
A snowflake-shaped Zn porphyrin dendrimer with a C60 terminal was prepared. Covalent linkage of the C60 unit results in significant quenching of the Zn porphyrin fluorescence mainly due to energy transfer from the Zn porphyrin core to the C60 terminal. Comparison of the energy-transfer efficiency with similar dendrons indicates that the dendritic structure considerably delays the energy-transfer rate.
Kozaki
Masatoshi
M
Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Osaka 558-8585, Japan. kozaki@sci.osaka-cu.ac.jp
Akita
Kogen
K
Suzuki
Shuichi
S
Okada
Keiji
K