Počet záznamů: 1

The UV absorption of nucleobases: semi-classical ab initio spectra simulations

  1. 1.
    0353580 - UOCHB-X 2011 RIV GB eng J - Článek v odborném periodiku
    Barbatti, M. - Aquino, A. J. A. - Lischka, Hans
    The UV absorption of nucleobases: semi-classical ab initio spectra simulations.
    Physical Chemistry Chemical Physics. Roč. 12, č. 19 (2010), s. 4959-4967 ISSN 1463-9076
    Grant CEP: GA MŠk LC512
    Grant ostatní: Special Research Program(AT) P18411-N19
    Výzkumný záměr: CEZ:AV0Z40550506
    Klíčová slova: semi-classical simulations * UV absorption spectra * nucleobases
    Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
    Impakt faktor: 3.454, rok: 2010

    Semi-classical simulations of the UV-photoabsorption cross sections of adenine, guanine, cytosine, thymine, and uracil in gas phase were performed at the resolution-of-identity coupled cluster to the second-order (RI-CC2) level. With the exception of cytosine, the spectra of the other four nucleobases show a two band pattern separated by a low intensity region. The spectrum of cytosine is shaped by a sequence of three bands of increasing intensity. The first band of guanine is composed by two pp transitions of similar intensities. The analysis of individual contributions to the spectra allows a detailed assignment of bands. It is shown that the semi-classical simulations are able to predict general features of the experimental spectra, including their absolute intensities.
    Trvalý link: http://hdl.handle.net/11104/0192803