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Fragmentation of imidazole, pyrimidine and purine induced by core ionization: Significance of small-scale chemical environment
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2018 (English)In: Journal of Photochemistry and Photobiology A: Chemistry, ISSN 1010-6030, E-ISSN 1873-2666, Vol. 356, p. 283-289Article in journal (Refereed) Published
Abstract [en]

Fragmentation of imidazole, pyrimidine and purine into pairs of cations induced by carbon 1s core ionization was studied. All three molecules favor two-body fragmentation accompanied with a number of hydrogen ejections. In addition, also the formation of CH1,2N+ strongly characterizes the fragmentation of imidazole, pyrimidine and purine. As purine is a fusion of imidazole and pyrimidine rings, the measurements carried out also provided a possibility to study how the fragmentation changes when an isolated imidazole or pyrimidine molecule becomes a part of a larger structure. Furthermore, the previous studies on two pyrimidine derivatives, thymine and uracil, also provide an opportunity to see how the attachment of simple functional groups affect the fragmentation of pyrimidine. The results suggest that the fragmentation of pyrimidine is rather sensitive to any structural or environmental changes, unlike the fragmentation of imidazole.

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 356, p. 283-289
Keywords [en]
Biomolecules, Chemical environment, Fragmentation, Ionization
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-221683DOI: 10.1016/j.jphotochem.2018.01.003Scopus ID: 2-s2.0-85040358168OAI: oai:DiVA.org:kth-221683DiVA, id: diva2:1176302
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QC 20180122

Available from: 2018-01-22 Created: 2018-01-22 Last updated: 2018-01-22Bibliographically approved

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Rachlew, Elisabeth
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Particle and Astroparticle Physics
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