Electron hopping in π-stacked covalent and self-assembled perylene diimides observed by ENDOR spectroscopy

Michael J. Tauber, Richard F. Kelley, Jovan M. Giaimo, Boris Rybtchinski, Michael R. Wasielewski

Research output: Contribution to journalArticle

122 Citations (Scopus)

Abstract

We have carried out room-temperature, solution-phase electron paramagnetic resonance and electron-nuclear double resonance studies on a series of radical anions based upon perylene-3,4:9,10-bis(dicarboximide) (PDI). The following systems were studied: two PDI monomers, a covalent, cofacial dimer, and two covalent trefoil-PDI3 molecules, one of which self-assembles into π-stacked dimers. Full sharing of the unpaired electron in the covalent and self-assembled dimers is revealed by a halving of the hyperfine coupling constants in these species, relative to those of the monomers. These results and the electronic absorption spectra show that electron hopping on a >107 Hz time scale occurs between a reduced and neutral chromophoric pair.

Original languageEnglish
Pages (from-to)1782-1783
Number of pages2
JournalJournal of the American Chemical Society
Volume128
Issue number6
DOIs
Publication statusPublished - Feb 15 2006

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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