Dynamics and energetics of hole trapping in DNA by 7-deazaguanine

Frederick D. Lewis*, Jianqin Liu, Xiaoyang Liu, Xiaobing Zuo, Ryan T. Hayes, Michael R. Wasielewski

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

28 Scopus citations


A deep hole trap is 7-deazaguanine (Z) - According to time-resolved transient absorption spectroscopy and kinetic modeling - For hole transport in DNA from a guanine (G) to a Z base across one or two intervening adenine-thymine base pairs. The Gibbs energy for hole transport from G to Z was determined to be - 0.19 eV, much larger than values for GG or GGG sites. Thus Z effectively prevents charge migration in DNA.

Original languageEnglish (US)
Pages (from-to)1026-1028
Number of pages3
JournalAngewandte Chemie - International Edition
Issue number6
StatePublished - Mar 15 2002


  • DNA conjugates
  • Electron transfer
  • Photooxidation
  • Picosecond spectroscopy 1020-1022

ASJC Scopus subject areas

  • General Chemistry
  • Catalysis


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