Non-statistical fragmentation in photo-activated flavin mononucleotide anions

Giacomozzi, Linda, Kjær, Christina, Brøndsted Nielsen, Steen, Ashworth, Eleanor K., Bull, James N. ORCID: and Stockett, Mark H. (2021) Non-statistical fragmentation in photo-activated flavin mononucleotide anions. The Journal of Chemical Physics, 155 (4). ISSN 0021-9606

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The spectroscopy and photo-induced dissociation of flavin mononucleotide anions in vacuo are investigated over the 300-500 nm wavelength range. Comparison of the dependence of fragment ion yields as a function of deposited photon energy with calculated dissociation energies and collision-induced dissociation measurements performed under single-collision conditions suggests that a substantial fraction of photo-activated ions decompose through non-statistical fragmentation pathways. Among these pathways is the dominant photo-induced fragmentation channel, the loss of a fragment identified as formylmethylflavin. The fragment ion specific action spectra reveal electronic transition energies close to those for flavins in solution and previously published gas-phase measurements, although the photo-fragment yield upon excitation of the S 2 ← S 0 transition appears to be suppressed.

Item Type: Article
Uncontrolled Keywords: physics and astronomy(all),physical and theoretical chemistry ,/dk/atira/pure/subjectarea/asjc/3100
Faculty \ School: Faculty of Science > School of Chemistry
UEA Research Groups: Faculty of Science > Research Groups > Chemistry of Light and Energy
Faculty of Science > Research Groups > Centre for Photonics and Quantum Science
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Depositing User: LivePure Connector
Date Deposited: 06 Aug 2021 00:08
Last Modified: 09 Feb 2023 13:49
DOI: 10.1063/5.0056415

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