An analysis of α-neopentylamine-PSar showed the presence of signals that can be attributed to the product bearing proton (ω), sodium (δ) and potassium (α) ion doping with amine ωtermini (Figure ). However, we also observed signals that could be attributed to unoxidized PSar (γ) or PSaroxid bearing sodium (α) or potassium (γ) ion doping with an amine ω-terminus.