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The Effect of Solvation on Electron Attachment to Pure and Hydrated Pyrimidine Clusters
Author(s) -
Neustetter Michael,
Aysina Julia,
da Silva Filipe Ferreira,
Denifl Stephan
Publication year - 2015
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201503733
Subject(s) - solvation , biomolecule , pyrimidine , molecule , chemical physics , chemistry , fragmentation (computing) , electron , solvated electron , ion , computational chemistry , stereochemistry , organic chemistry , aqueous solution , radiolysis , quantum mechanics , computer science , operating system , biochemistry , physics
The interaction of low‐energy electrons with biomolecules plays an important role in the radiation‐induced alteration of biological tissue at the molecular level. At electron energies below 15 eV, dissociative electron attachment is one of the most important processes in terms of the chemical transformation of molecules. So far, a common approach to study processes at the molecular level has been to carry out investigations with single biomolecular building blocks like pyrimidine as model molecules. Electron attachment to single pyrimidine, as well as to pure clusters and hydrated clusters, was investigated in this study. In striking contrast to the situation with isolated molecules and hydrated clusters, where no anionic monomer is detectable, we were able to observe the molecular anion for the pure clusters. Furthermore, there is evidence that solvation effectively prevents the ring fragmentation of pyrimidine after electron capture.