Electrospray Ionization-Mass Spectrometric (ESI-MS {&} MS/MS) analysis of Poly(2-oxazoline)s with Different Side Groups

Altuntas, Esra; Kempe, Kristian; Crecelius, Anna; Hoogenboom, Richard; Schubert, Ulrich S.

Abstract:

ESI-Q-TOF MS has been used for the detailed characterization of various poly(2-oxazoline)s with different side groups (i.e. methyl, ethyl, 1-ethylpentyl, phenyl, o-difluorophenyl and p-tert-butylphenyl) to evaluate this method as structural characterization tool for the detailed analysis of poly(2-oxazoline)s. The results obtained provided an understanding of the fragmentation of poly(2-oxazoline)s, revealing the elimination of small molecules such as ethene and hydrogen in their fragmentation patterns, which are partially dependent on the side groups. Also, a McLafferty rearrangement can be a possible fragmentation route for these polymers. In detail, side group elimination was only observed for poly(2-alkyl-2-oxazoline)s, but not for poly(2-aryl-2-oxazoline) s.

Year:

2010

Type of Publication:

Article

Journal:

Macromolecular Chemistry and Physics

Volume:

211

Pages:

2312 - 2322