GERVAIS, Matthieu; LABBÉ, Amélie; CARLOTTI, Stéphane; DEFFIEUX, Alain

doi:10.1021/ma802063s

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GERVAIS, Matthieu
Laboratoire de Chimie des Polymères Organiques [LCPO]

LABBÉ, Amélie
Laboratoire de Chimie des Polymères Organiques [LCPO]

CARLOTTI, Stéphane
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering

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International Journal of Biological Macromolecules. 2009, vol. 42, n° 7, p. 2395-2400

Elsevier

Résumé en anglais

alpha-Azido,omega-hydroxypolyethers were prepared directly by monomer-activated anionic polymerization. The introduction of the azido function in the alpha-position of poly(ethylene oxide), poly(propylene oxide), protected polyglycidol and polyepichlorohydrin was carried out by tetrabutylammonium azide used as initiator. A slight excess of triisobutylaluminum with respect to the ammonium salt ([i-Bu3Al]/[NBu4N3] = 1.5 to 5) was added to trigger the polymerization and get polyethers with controlled molar masses up to 30000 g/mol in a few hours. The terminal hydroxyl function was formed by deactivation of the active polymer ends. The successful and direct preparation of these N-3-functionalized polyethers was proven by NMR spectroscopy, size exclusion chromatography and matrix-assisted laser desorption/ionization time-of-flight characterizations as well as "click" reactions.< Réduire

Mots clés en anglais

CONJUGATION

COMBINATION

AZIDE

ALKYNES

CLICK-CHEMISTRY

BLOCK-COPOLYMERS

TRIBLOCK COPOLYMERS

MATERIALS SCIENCE

CYCLOADDITION

DERIVATIVES

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Direct Synthesis of alpha-Azido,omega-hydroxypolyethers by Monomer-Activated Anionic Polymerization

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