Sequences in Polydimethylsiloxane

Generally, cationisation stabilises molecular and fragment ions [53]. Cationisation with silver is commonly observed in SIMS experiments when Ag foils are used as substrates. Silver ions sputtered from the substrate are usually the most abundant cations observed in the mass spectrum. 

Peaks due to silver isotopes not resolved. m/z of ions intensity in parentheses (counts/channel). Reprinted with permission from I.V. Bletsos, D.M. Hercules, D. Van Leyen and  

Fragments containing an integral number of repeat unit and a terminal Si(CH3)3 group, [ R + Si(CFi3)3+, n = 0, 1, 2, 5, give rise to ions having the same m/z as 

---