Photoelectron spectroscopy of isolated multiply negatively charged oligonucleotides

被引：44
|
作者：
Weber, JM
Ioffe, IN
Berndt, KM
Löffler, D
Friedrich, J
Ehrler, OT
Danell, AS
Parks, JH
Kappes, MM
机构：
[1] Univ Karlsruhe, Inst Phys Chem, D-76128 Karlsruhe, Germany
[2] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119899, Russia
[3] Harvard Univ, Rowland Inst, Cambridge, MA 02142 USA
来源：
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2004年 / 126卷 / 27期
关键词：
D O I：
10.1021/ja049736c
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
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.
引用
收藏
页码：8585 / 8589
页数：5
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