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ESI-MS & MS/MS Analysis of Poly(2-oxazoline)s with Different Side Groups

Authors

  • Esra Altuntaş,

    1. Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich-Schiller-Universität Jena, Humboldtstrasse 10, 07743 Jena, Germany
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  • Kristian Kempe,

    1. Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich-Schiller-Universität Jena, Humboldtstrasse 10, 07743 Jena, Germany
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  • Anna Crecelius,

    1. Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich-Schiller-Universität Jena, Humboldtstrasse 10, 07743 Jena, Germany
    2. Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands
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  • Richard Hoogenboom,

    1. Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands
    2. Laboratory of Macromolecular Chemistry and Nanoscience, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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  • Ulrich S. Schubert

    Corresponding author
    1. Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich-Schiller-Universität Jena, Humboldtstrasse 10, 07743 Jena, Germany
    2. Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands
    3. Laboratory of Macromolecular Chemistry and Nanoscience, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
    • Laboratory of Organic and Macromolecular Chemistry, Friedrich-Schiller-Universität Jena, Humboldtstrasse 10, 07743 Jena, Germany, Fax +49 3641 948 202
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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.

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