DNA-mediated electron transfer across synthetic T:A·T triplex structures

Frederick D. Lewis*, Yansheng Wu, Ryan T. Hayes, Michael R. Wasielewski

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

28 Scopus citations


Exciting DNA threesome: Time-resolved transient absorption spectroscopy has been used to study electron-transfer processes between an excited-state electron acceptor and a ground-state electron donor, separated by a variable number of T:A · T triplet steps in triplex DNA (see figure). The formation and decay of both the acceptor anion radical and donor cation radical can be resolved. Electron tunneling is more effective at longer acceptor-donor distances in triplex than in duplex DNA.

Original languageEnglish (US)
Pages (from-to)3485-3487
Number of pages3
JournalAngewandte Chemie - International Edition
Issue number18
StatePublished - Sep 16 2002


  • DNA structures
  • Electron transfer
  • Fluorescence spectroscopy
  • Hole transport
  • Time-resolved spectroscopy

ASJC Scopus subject areas

  • General Chemistry
  • Catalysis


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