In-source collision induced dissociation study of polyethers cationized by alkali metal ions

Ákos Kuki, Izabella Irsai, Lajos Nagy, Ghazaleh Shemirani, Cornelia Majdik, M. Zsuga, S. Kéki

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

In-source collision induced dissociation (ISCID) of polyethylene glycol (PEG) and polypropylene glycol (PPG) cationized by alkali metal ions was studied as a function of the chain length and collision energy using electrospray ionization mass spectrometry (ESI MS). The dissociation of the sodiated, potassiated and cesiated PEG and PPG yielded a neutral polyether and a cation without the formation of product ions resulting from the backbone cleavages. The survival yield (SY) method was applied to characterize the in-source fragmentation behavior of the cationized polyethers. The SY curves obtained by tandem MS/MS CID and in-source CID were compared. A remarkable difference was found, i.e. increasing the collision energy, the polyethers entirely dissociate in the collision cell, while the in-source SY plots level off at about 0.1-0.3. The finite SY values at large ISCID collision energies may suggest ion-molecule reactions in the ISCID region of the instrument. It was found that the characteristic ISCID50 collision energy corresponding to SY = 0.5 was dependent linearly on the number of the repeat units, i.e., on the size of the polyethers.

Original languageEnglish
Pages (from-to)38-42
Number of pages5
JournalInternational Journal of Mass Spectrometry
Volume334
DOIs
Publication statusPublished - Jan 15 2013

Fingerprint

Alkali Metals
Polyethers
Alkali metals
alkali metals
Metal ions
metal ions
dissociation
collisions
Glycols
Polyethylene glycols
glycols
Polypropylenes
charge injection devices
Ions
Electrospray ionization
Chain length
polypropylene
Mass spectrometry
Cations
polyethylenes

Keywords

  • Fragmentation
  • In-source collision-induced dissociation
  • Polyethylene glycol
  • Polypropylene glycol
  • Survival yield

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Condensed Matter Physics
  • Instrumentation

Cite this

In-source collision induced dissociation study of polyethers cationized by alkali metal ions. / Kuki, Ákos; Irsai, Izabella; Nagy, Lajos; Shemirani, Ghazaleh; Majdik, Cornelia; Zsuga, M.; Kéki, S.

In: International Journal of Mass Spectrometry, Vol. 334, 15.01.2013, p. 38-42.

Research output: Contribution to journalArticle

Kuki, Ákos ; Irsai, Izabella ; Nagy, Lajos ; Shemirani, Ghazaleh ; Majdik, Cornelia ; Zsuga, M. ; Kéki, S. / In-source collision induced dissociation study of polyethers cationized by alkali metal ions. In: International Journal of Mass Spectrometry. 2013 ; Vol. 334. pp. 38-42.
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