期刊
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
卷 48, 期 23, 页码 5533-5540出版社
WILEY
DOI: 10.1002/pola.24364
关键词
block copolymers; ESI; MALDI; poly(2-oxazoline); mass spectrometry
资金
- Dutch Polymer Institute (DPI)
- Thuringer Kultusministerium [B515-07008, B715-08011]
- Landesgraduiertenforderung Thuringen
A complete library of poly(2-oxazoline) block copolymers was synthesized via cationic ring opening polymerization for the characterization by two different soft ionization techniques, namely matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) and electrospray ionization quadrupole time-of-flight mass spectrometry (ESI-Q-TOF MS). In addition, a detailed characterization was performed by tandem MS to gain more structural information about the block copolymer composition and its fragmentation behavior. The fragmentation of the poly(2-oxazoline) block copolymers revealed the desired polymer structure and possible side reactions, which could be explained by different mechanisms, like 1,4-ethylene or hydrogen elimination and the McLafferty +1 rearrangement. Polymers with aryl side groups showed less fragmentation due to their higher stability compared to polymers with alkyl side groups. These insights represent a further step toward the construction of a library with fragments and their fragmentation pathways for synthetic polymers, following the successful examples in proteomics. (C) 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 48: 5533-5540, 2010
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