Journal of the American Chemical Society
Journal of the American Chemical Society
5 years ago

Single-Acetylene Linked Porphyrin Nanorings

Single-Acetylene Linked Porphyrin Nanorings
Isabell Grübner, Andreas Vargas Jentzsch, Michel Rickhaus, Harry L. Anderson, Lara Tejerina, Michael Jirasek, Timothy D. W. Claridge
The synthesis of ethyne-linked porphyrin nanorings has been achieved by template-directed Sonogashira coupling. The cyclic hexamer and octamer are predicted by density functional theory to adopt low symmetry conformations, due to dihedral twists between neighboring porphyrin units, but their symmetries are effectively D6h and D8h, respectively, in solution by 1H NMR. The fluorescence spectra indicate that the singlet excited states of these nanorings are highly delocalized.

Publisher URL: http://dx.doi.org/10.1021/jacs.7b10710

DOI: 10.1021/jacs.7b10710

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