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Strained Porphyrin Tape-Cycloparaphenylene Hybrid Nanorings. | LitMetric
V-Shaped porphyrin dimers, with masked phenylene bridges, undergo efficient oxidative coupling to form - linked cyclic porphyrin oligomers. Reductive aromatization unmasks the -phenylenes, increasing the strain. Oxidation then fuses the porphyrin dimers, providing a nanoring with curved walls. The strain in this macrocycle bends the -phenylene and fused porphyrin dimer units (radii of curvature of 11.4 and 19.0 Å, respectively), but it does not significantly alter the electronic structure of the fused porphyrins.
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