A Self-Assembled Light-Harvesting Array of Seven Porphyrins in a Wheel and Spoke Architecture
journal contributionposted on 01.08.2000 by Arounaguiry Ambroise, Junzhong Li, Lianhe Yu, Jonathan S. Lindsey
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A shape-persistent cyclic array of six zinc porphyrins provides an effective host for a dipyridyl-substituted free base porphyrin, yielding a self-assembled structure for studies of light harvesting. Energy transfer occurs essentially quantitatively from uncoordinated to pyridyl-coordinated zinc porphyrins in the cyclic array. Energy transfer from the coordinated zinc porphyrin to the guest free base porphyrin is less efficient (Φtrans ∼40%) and is attributed to a Förster through-space process.