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Enhanced π Conjugation around a Porphyrin[6] Nanoring

Authors


  • This work was supported by EPSRC. We thank Johannes K. Sprafke for preliminary experiments on the synthesis of the template, and the EPSRC Mass Spectrometry Service (Swansea) for mass spectra.

Abstract

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Strong cycle: The cyclic hexamer–template complex 3 obtained through template-directed trimerization of a porphyrin dimer 2, using a hexapyridyl template 1, is extremely stable (Kf=7×1038M−1), but the free macrocycle 4 can be liberated using amine ligands. Spectroscopic data and DFT calculations show that the cyclic hexamer is more conjugated than its linear analogue.

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