Deprotonation induced formation of Mobius aromatic [32]heptaphyrins

摘要

Upon treatment with tetrabutylammonium fluoride (TBAF), [32]hepta-phyrins 1 and 2 underwent conformational changes to form Mobius aromatic species, as indicated by the appearance of sharp and intense B-tike bands and distinct Q-like bands, long-lived S_1-states, and relatively large TPA cross-section values. Hence, deprotonation has been shown to be an additional effective means to induce the formation of Moebius aromatic expanded porphyrins.