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Fragmentation of thymidine induced by ultraviolet photoionization and thermal degradation
KTH, School of Engineering Sciences (SCI), Physics, Atomic and Molecular Physics.ORCID iD: 0000-0001-7389-5501
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2013 (English)In: International Journal of Mass Spectrometry, ISSN 1387-3806, E-ISSN 1873-2798, Vol. 353, 7-11 p.Article in journal (Refereed) Published
Abstract [en]

Fragmentation of gas phase thymidine at different temperatures was studied with vacuum ultraviolet radiation and time-of-flight spectroscopy. Partial ion yield measurements were carried out in order to study the appearance energies of thymidine and its main fragments. The appearance energies of thymidine and its deoxyribose- and thymine-based fragments were determined to be 8.39, 8.77 and 8.81 eV, independently of temperature. The thermal decomposition of the sample was observed to start around 138-139 C and it was explained by the breakage of the glycosidic bond, accompanied by hydrogen transfer from the deoxyribose ring to the thymine base.

Place, publisher, year, edition, pages
2013. Vol. 353, 7-11 p.
Keyword [en]
Appearance energy, Photodissociation, Photoionization, Thermal decomposition, Thymidine
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URN: urn:nbn:se:kth:diva-133182DOI: 10.1016/j.ijms.2013.08.008ISI: 000326560300002Scopus ID: 2-s2.0-84884611467OAI: oai:DiVA.org:kth-133182DiVA: diva2:659939
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QC 20131028

Available from: 2013-10-28 Created: 2013-10-28 Last updated: 2017-12-06Bibliographically approved

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Rachlew, Elisabeth

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