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Single-Acetylene Linked Porphyrin Nanorings.

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 symmetr...

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Publicado en:Journal of the American Chemical Society Vol. 139; no. 46; pp. 16502 - 16506
Autores principales: Rickhaus, Michel, Jentzsch, Andreas Vargas, Tejerina, Lara, Grubner, Isabell, Jirasek, Michael, Claridge, Timothy D. W., Anderson, Harry L.
Formato: Artículo
Publicado: American Chemical Society 11/22/2017
Materias:
Chemical synthesis
Acetylene
Porphyrins
Density functional theory
Nanoparticles
Ring formation (Chemistry)
Acceso en línea:Ver este registro en EBSCOhost
Sumario: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 D and D, respectively, in solution by 1H NMR. The fluorescence spectra indicate that the singlet excited states of these nanorings are highly delocalized.