Toward an easy access to dendrimer-like poly(ethylene oxide)s
TATON, Daniel
Laboratoire de Chimie des polymères organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
Voir plus >
Laboratoire de Chimie des polymères organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
TATON, Daniel
Laboratoire de Chimie des polymères organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
< Réduire
Laboratoire de Chimie des polymères organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
Langue
en
Article de revue
Ce document a été publié dans
Journal of the American Chemical Society. 2005, vol. 127, n° 31, p. 10956-10966
American Chemical Society
Résumé en anglais
Dendrimer-like poly(ethylene oxide)s (PEOs) were synthesized by an iterative divergent approach combining anionic polymerization of ethylene oxide from multi-hydroxylated precursors and branching reactions of PEO chain ...Lire la suite >
Dendrimer-like poly(ethylene oxide)s (PEOs) were synthesized by an iterative divergent approach combining anionic polymerization of ethylene oxide from multi-hydroxylated precursors and branching reactions of PEO chain ends. Partial deprotonation of the hydroxyls (< 30%) and use of dimethyl sulfoxide as solvent proved crucial for a "controlled/living" polymerization of ethylene oxide at room temperature. These sequences of reactions allowed us to prepare a dendrimer-like PEO up to the eighth generation with a molar mass of 900 000 g mol(-1) and 384 external hydroxyl functions. All samples from generation 1 to 8 were characterized by H-1 NMR spectroscopy, light scattering, and viscometry. The evolution of the intrinsic viscosity versus the generation number of these dendrimer-like PEO is similar to that of regular dendrimers.< Réduire
Mots clés en anglais
DIVERGENT SYNTHESIS
CONVENTIONAL MONOMERS
RADICAL POLYMERIZATION
LIVING ANIONIC-POLYMERIZATION
TERMINATOR MULTIFUNCTIONAL INITIATOR
HYPERBRANCHED ALIPHATIC POLYETHERS
STAR POLYMERS
BLOCK-COPOLYMERS
BRANCHED POLYETHER
POLY(BENZYL ETHER)
Origine
Importé de halUnités de recherche