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Ions derived from linear polysulfide oligomers using matrix-assisted laser desorption/ionisation time-of-flight mass spectrometry
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Mahon, Andrea, Kemp, T. J., Varney, Julie E. and Derrick, Peter J. (1998) Ions derived from linear polysulfide oligomers using matrix-assisted laser desorption/ionisation time-of-flight mass spectrometry. Polymer, Vol.39 (No.25). pp. 6213-6217. doi:10.1016/S0032-3861(98)00160-8 ISSN 0032-3861.
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Official URL: http://dx.doi.org/10.1016/S0032-3861(98)00160-8
Abstract
Attempts to produce detectable levels of ions from oligomers of linear polysulfides (LPs) H(SC2H4O-CH2OC2H4S)(n)H (n up to 24) by matrix-assisted laser desorption/ionisation time-of-flight (MALDI-TOF) mass spectrometry failed with all common matrix/cation combinations except 9-nitroanthracene containing silver trifluoracetate. The latter matrix yielded a series of species assigned to Ag(SC2H4OCH2OC2H4S)(n) representing the loss of two thiol hydrogen atoms, together with smaller quantities of other series Ag(SC2H4O-CH2OC2H4S)(n)(C2H4OCH2OC2H4S) and Ag(SC2H4OCH2OC2H4S)(n)(SC2H4OC2H4OCH2OC2H4S) when a conventional LP was utilised. Other LP structures were examined and these also gave argentated species; one LP (designated ZL-2264) gave a spectrum featuring silver isotope splitting of all of its peaks. At higher laser powers, or with high silver salt concentrations, or after extensive ageing of samples prior to laser irradiation, a totally new series of peaks emerged attributed to [(Ag2S)(n)Ag](+) with n reaching 11, i.e. containing 23 silver atoms.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QD Chemistry | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | ||||
Journal or Publication Title: | Polymer | ||||
Publisher: | Elsevier Science BV | ||||
ISSN: | 0032-3861 | ||||
Official Date: | December 1998 | ||||
Dates: |
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Volume: | Vol.39 | ||||
Number: | No.25 | ||||
Number of Pages: | 5 | ||||
Page Range: | pp. 6213-6217 | ||||
DOI: | 10.1016/S0032-3861(98)00160-8 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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