Vacuum UV studies of protonated serine clusters

Ori Licht, Maria Nihamkin, Mirit Anaby, Patrick Rousseau, Alexandre Giuliani, Aleksandar R. Milosavljević, Raj Singh, Vy T.T. Nguyen, Laurent Nahon, Yoni Toker

Research output: Contribution to journalArticlepeer-review


In a recent work, we have shown that photon absorption can cause a chemical bond to be created between the two monomers within a protonated serine dimer, a process known as intra-cluster bond formation, despite this process not occurring following thermal excitation via low energy collision-induced dissociation (LE-CID). Here we show further evidence for non-statistical photon-induced dissociation (PID) of the protonated serine dimer. In addition we discuss LE-CID and PID studies of the protonated serine octamer, showing that in this case as well, PID leads to non-statistical fragmentation and to the formation of two bonds between three neighboring monomers.

Original languageEnglish
Article number205101
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Issue number20
StatePublished - 28 Oct 2023

Bibliographical note

Publisher Copyright:
© 2023 IOP Publishing Ltd.


This study was supported by the Minerva Center for Making Bonds by Fragmentation. This article is based upon work from COST action CA18212—Molecular Dynamics in the GAS phase (MD-GAS), supported by COST (European Cooperation in Science and Technology). R S acknowledges the Normandy Region and the European Union in the frame of the operational Program FEDER/FSE 2014-2020 (RIN MAGIC) and the support received by the French ANR agency (ANR-18-CE30-0021, ANR FRAPA). V T T N acknowledges NucPhys Master Degree and EACEA (Project Number: 610575-EPP-1-2019-1-ES-EPPKA1-JMD-MOB, Contract: 2019-2130) for support. We are grateful to the general staff of SOLEIL for smoothly running the facility and for providing beamtime under Project #20210498, and to J-F Gil for his help in installing the ion trap set-up on the DESIRS beamline. This work was supported by the Agence Nationale de la Recherche, France, under Project ANR-08-BLAN-0065.

FundersFunder number
European Commission
Education, Audiovisual and Culture Executive Agency20210498, 610575-EPP-1-2019-1-ES-EPPKA1-JMD-MOB, 2019-2130
European Cooperation in Science and Technology
Agence Nationale de la RechercheANR-08-BLAN-0065


    • excited state dynamics
    • gas phase
    • intra cluster bond formation
    • molecular clusters
    • peptide bond formation


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