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How feasible is matrix-assisted laser desorption/ionisation time-of-flight mass spectrometry analysis of polyolefins?

โœ Scribed by Meike Reinhold; Robert J. Meier; Chris G. de Koster

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
63 KB
Volume
12
Category
Article
ISSN
0951-4198

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โœฆ Synopsis

Ab initio quantum calculations were applied to obtain binding energies for sodium cation-oligomer complexes comprising either methanol, ethylene glycol oligomers or n-alkanes. In addition, it was experimentally shown using sodium cations that ethylene glycol oligomers could not be detected when consisting of less than 5 monomers. This observation and the fact that experimentally no matrix-assisted laser desorption/ionisation mass spectra have been reported for saturated polyolefins are now attributed to the low binding energy of the sodium-oligomer complexes, which is insufficient to prevent dissociation of the complexes in multiple collisions occurring in the extraction section of the mass spectrometer.

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