Dynamics of ultrafast singlet and triplet charge transfer in anthraquinone-DNA conjugates

Frederick D. Lewis, Arun K. Thazhathveetil, Tarek A. Zeidan, Josh Vura-Weis, Michael R. Wasielewski

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

(Chemical Equation Presented) The efficiency of singlet and triplet charge radical ion-pair formation and the dynamics of radical-pair charge recombination in DNA-anthraquinone conjugates have been investigated by means of femtosecond time-resolved transient absorption spectroscopy. Singlet charge separation is more efficient than intersystem crossing, resulting in inefficient formation of the long-lived triplet radical ion pair. Both singlet charge separation and charge recombination are faster when guanine rather than adenine is the neighboring purine base.

Original languageEnglish
Pages (from-to)444-445
Number of pages2
JournalJournal of the American Chemical Society
Volume132
Issue number2
DOIs
Publication statusPublished - Jan 20 2010

ASJC Scopus subject areas

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

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