Open AccessState-dependent fragmentation of protonated uracil and uridine
Author(s) -
M. Pitzer,
Ch Ozga,
Catmarna Küstner-Wetekam,
Ph Reiß,
A. Knie,
A. Ehresmann,
T. Jahnke,
Alexandre Giuliani,
Laurent Nahon
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1412/21/212010
Subject(s) - uridine , uracil , nucleobase , fragmentation (computing) , chemistry , protonation , photon energy , excited state , nucleoside , molecule , pyrimidine , excitation , photochemistry , atomic physics , photon , crystallography , physics , stereochemistry , dna , rna , biology , optics , biochemistry , organic chemistry , ion , gene , ecology , quantum mechanics
Synopsis Protonated uracil (m/z 113) and uridine (m/z 245) were exposed to synchrotron radiation in the photon energy range of 4.5 to 9 eV. The yield of various fragments as a function of photon energy shows maxima that can be attributed to excited electronic states and compared to calculated vertical excitation energies. For the nucleoside uridine, much less fragments were observed, indicating a stabilization of the nucleobase through the attached sugar molecule.