Porphyrin-Polyyne [3]- and [5]Rotaxanes.
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ABSTRACT:
SUBMITTER: Kohn DR
PROVIDER: S-EPMC5354311 | biostudies-literature | 2017 Jan
REPOSITORIES: biostudies-literature
Publications
Porphyrin-Polyyne [3]- and [5]Rotaxanes.
Kohn Daniel R DR Movsisyan Levon D LD Thompson Amber L AL Anderson Harry L HL
Organic letters 20170105 2
Porphyrin-polyyne [3]- and [5]rotaxanes have been synthesized by condensing aldehyde-rotaxanes with pyrrole or dipyrromethane. The crystal structure of a [3]rotaxane shows that the macrocycles adopt compact conformations, holding the hexaynes near the porphyrin core, and that the phenanthroline units form intermolecular π-stacked dimers in the solid. Fluorescence spectra reveal singlet excited-state energy transfer from the threaded hexayne to the porphyrin, from the phenanthroline to the porphy ...[more]
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