期刊
MACROMOLECULAR RAPID COMMUNICATIONS
卷 35, 期 12, 页码 1135-1141出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.201400114
关键词
cationic living polymerization; chain-end functionality; functional polymers; polyphosphazenes
资金
- European Union [EFRE RU2-EU-124/100-2010, M00146]
- Austrian Science Fund (FWF) [P24659-N28]
- Austrian Science Fund (FWF) [P 24659] Funding Source: researchfish
- Austrian Science Fund (FWF) [P24659] Funding Source: Austrian Science Fund (FWF)
A simple polymerization of trichlorophosphoranimine (Cl3P = N- SiMe3) mediated by functionalized triphenylphosphines is presented. In situ initiator formation and the subsequent polymerization progress are investigated by 31 P NMR spectroscopy, demonstrating a living cationic polymerization mechanism. The polymer chain lengths and molecular weights of the resulting substituted poly(organo) phosphazenes are further studied by 1 H NMR spectroscopy and size exclusion chromatography. This strategy facilitates the preparation of polyphosphazenes with controlled molecular weights and specific functional groups at the alpha-chain end. Such well-defined, mono-end-functionalized polymers have great potential use in bioconjugation, surface modification, and as building blocks for complex macromolecular constructs.
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