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

37 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

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Anthraquinones
Genetic Recombination
Charge transfer
DNA
Ions
Guanine
Adenine
Absorption spectroscopy
Spectrum Analysis
purine

ASJC Scopus subject areas

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

Cite this

Dynamics of ultrafast singlet and triplet charge transfer in anthraquinone-DNA conjugates. / Lewis, Frederick D.; Thazhathveetil, Arun K.; Zeidan, Tarek A.; Vura-Weis, Josh; Wasielewski, Michael R.

In: Journal of the American Chemical Society, Vol. 132, No. 2, 20.01.2010, p. 444-445.

Research output: Contribution to journalArticle

Lewis, Frederick D. ; Thazhathveetil, Arun K. ; Zeidan, Tarek A. ; Vura-Weis, Josh ; Wasielewski, Michael R. / Dynamics of ultrafast singlet and triplet charge transfer in anthraquinone-DNA conjugates. In: Journal of the American Chemical Society. 2010 ; Vol. 132, No. 2. pp. 444-445.
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