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A Large Dendritic Multiporphyrin Array as a Mimic of the Bacterial Light-Harvesting Antenna Complex: Molecular Design of an Efficient Energy Funnel for Visible Photons.
Angew Chem Int Ed Engl
September 2001
Department of Chemical Process Engineering Graduate School of Engineering Hokkaido University Kita-13-Nishi-8, Kita-ku, Sapporo 060-8628 (Japan).
π-Electronic conjugation is not necessary to facilitate long-range energy migration and transfer: A rapid (k =1.04×10 s ) and efficient (Φ =71 %) energy transfer from the 28 photoexcited zinc porphyrin units to the focal free-base porphyrin unit occurs in a large, star-shaped dendritic multiporphyrin array in which the chromophore units are linked through flexible ether groups.
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