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

Journal of Mass Spectrometry : JMS
Ghazaleh ShemiraniSándor Kéki

Abstract

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.

References

Feb 16, 2010·Analytical Chemistry·Antony MemboeufLászló Drahos
Oct 17, 2013·Journal of Mass Spectrometry : JMS·Akos KukiSándor Kéki
Dec 1, 1994·Journal of the American Society for Mass Spectrometry·R P Lattimer
Dec 1, 1994·Journal of the American Society for Mass Spectrometry·T L SelbyR P Lattimer
Mar 1, 1992·Journal of the American Society for Mass Spectrometry·R P Lattimer

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