Photoelectron spectroscopy of isolated multiply negatively charged oligonucleotidesстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Ultraviolet photoelectron spectroscopy in an ion beam was used to investigate the electronic properties of isolated DNA oligonucleotides [dA(5)-4H](4-) and [dT(5)-4H],(4-) carrying four excess negative charges. We find the fourth adiabatic electron affinity to be slightly negative for [dA5-4H],(4-) while it is positive for [dT(5)-4H].(4-) This implies a significant influence of the base composition on energetics, which is in turn relevant for analytic applications and also for charge transport properties.