Journal
MACROMOLECULES
Volume 45, Issue 1, Pages 46-55Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ma202401x
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- Dutch Polymer Institute (DPI) [612]
- Thiiringer Ministerium fur Wissenschaft, Bildung und Kultur (NanoConSens)
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The capability of a range of protected glucose- (Glc), galactose- (Gal), and fructose- (Fm) based tosylates and triflates to initiate the living cationic ring-opening polymerization of 2-ethy1-2-oxazoline (EtOx) was investigated by detailed kinetic studies utilizing H-1 and F-19 NMR spectroscopy and SEC as well as MALDI and ESI TOF mass spectrometry. The Glc and Gal tosylates and a sterically hindered Fm triflate revealed slow and incomplete initiation, whereas the Glc and Gal triflates resulted in living polymerizations. Well-defined Glc as well as Gal alpha-end-functionalized PEtOx was obtained after deprotection. Functionalization of the living oxazolinium chain ends with methacrylate anions resulted in a macromonomer that was applied for RAFT polymerization. Deprotection resulted in a comb polymer that is selectively functionalized with Glc at the ends of all side chains (DPbackbone = 13, DPside (chains) = 10, PDI = 1.11).
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