Electrospray ionization tandem mass spectrometry of the star-shaped propoxylated diethylenetriamine polyols

Ghazaleh Shemirani, Ákos Kuki, Lajos Nagy, Tibor Nagy, Miklõs Zsuga, Sándor Kéki

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The collision-induced dissociation of the protonated five-arm star propoxylated diethylenetriamine polyols was studied under electrospray conditions. Two product ion series were detected because of the cleavage of the C'N bonds in the initiator moiety. No backbone fragmentation of the polyether chains was observed, which allowed to explore the initiation and side-chain propagation process of the oligomers. On the basis of MS/MS spectra, it is probable that the rate of the initiation is larger than that of the chain propagation. The propylene oxide repeat units attach to the five arms with approximately the same probability. Furthermore, it was found that the collision energy necessary to obtain 50% fragmentation (CE50) was linearly dependent on the molecular weight of the polyols.

Original languageEnglish
Pages (from-to)914-917
Number of pages4
JournalJournal of Mass Spectrometry
Issue number7
Publication statusPublished - Jul 1 2015



  • diethylenetriamine
  • polypropylene glycol
  • tandem mass spectrometry

ASJC Scopus subject areas

  • Spectroscopy

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