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.
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The corresponding record at NLM can be accessed at https://www.ncbi.nlm.nih.gov/pubmed/25360462