Identification of charge separated states in thymine single strands

UV excitation of the DNA single strand (dT)18 leads to electronically excited states that are potential gateways to DNA photolesions. Using time-resolved infrared spectroscopy we characterized a species with a lifetime of ∼100 ps and identified it as a charge separated excited state between two thym...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2014-12, Vol.50 (98), p.15623-15626
Main Authors: Pilles, Bert M, Bucher, Dominik B, Liu, Lizhe, Gilch, Peter, Zinth, Wolfgang, Schreier, Wolfgang J
Format: Article
Language:English
Subjects:
Deoxyribonucleic acid
DNA, Single-Stranded - chemistry
Excitation
Excitation spectra
Infrared spectroscopy
Nucleic Acid Conformation
Spectrophotometry, Infrared
Strands
Thymine
Thymine - analysis
Ultraviolet Rays
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Summary:UV excitation of the DNA single strand (dT)18 leads to electronically excited states that are potential gateways to DNA photolesions. Using time-resolved infrared spectroscopy we characterized a species with a lifetime of ∼100 ps and identified it as a charge separated excited state between two thymine bases.
ISSN:1359-7345
1364-548X
DOI:10.1039/c4cc07663j