A self-assembled light-harvesting array of seven porphyrins in a wheel and spoke architecture.
[reaction: see text]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 (phitrans approximately 40%) and is attributed to a Förster through-space process.
Ambroise
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A
Department of Chemistry, North Carolina State University, Raleigh 27695-8204, USA.
Li
J
J
Yu
L
L
Lindsey
J S
JS
D055598:Chemical Phenomena; D002627:Chemistry, Physical; D008968:Molecular Conformation; D011166:Porphyrins / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D015032:Zinc / Q000737:chemistry
D011166:Porphyrins; D015032:Zinc