Photoelectron spectroscopy of homogeneous nucleic acid base dimer anions

Literature Information

Publication Date 2010-02-11
DOI 10.1039/B924950H
Impact Factor 3.676
Authors

Yeon Jae Ko, Haopeng Wang, Rui Cao, Dunja Radisic, Soren N. Eustis, Sarah T. Stokes, Svetlana Lyapustina, Shan Xi Tian, Kit H. Bowen


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Abstract

We report the photoelectron spectra of homogeneous dimer anions of the nucleobases: uracil, thymine, cytosine, adenine, and guanine, i.e., U2−, T2−, C2−, A2−, and G2− along with DFT calculations on U2− and T2−. Based on these calculations the photoelectron spectrum of T2− was assigned as being due to both a proton transferred and a non-proton transferred isomer, while the photoelectron spectrum of U2− was assigned in terms of a single dominant barrier-free proton transferred isomer. Photoelectron spectra were also measured with a different source and on a different type of photoelectron spectrometer for U2−, T2−, A2−, (1-MeT)2− and (1,3-Me2U)2−.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
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