Sandra Wilfert, Helena Henke, Wolfgang Schöfberger, Oliver Brüggemann, Ian Teasdale,
"Chain-End-Functionalized Polyphosphazenes via a One-Pot Phosphine-Mediated Living Polymerization"
, in Macromolecular Rapid Communications, Vol. 35, Nummer 12, Wiley-VCH Verlag, Seite(n) 1135-1141, 6-2014, ISSN: 1521-3927
Original Titel:
Chain-End-Functionalized Polyphosphazenes via a One-Pot Phosphine-Mediated Living Polymerization
Sprache des Titels:
Englisch
Original Kurzfassung:
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 31P 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 1H NMR spectroscopy and size exclusion chromatography. This strategy facilitates the preparation of polyphosphazenes with controlled molecular weights and specific functional groups at the ?-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.