LEPOITTEVIN, Bénédicte; MATMOUR, Rachid; FRANCIS, Raju; TATON, Daniel; GNANOU, Yves

doi:10.1021/ma048106s

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

LEPOITTEVIN, Bénédicte
Laboratoire de Chimie des polymères organiques [LCPO]

MATMOUR, Rachid
Laboratoire de Chimie des polymères organiques [LCPO]

FRANCIS, Raju
Laboratoire de Chimie des polymères organiques [LCPO]

Langue

Article de revue

Ce document a été publié dans

International Journal of Biological Macromolecules. 2005, vol. 38, n° 8, p. 3120-3128

Elsevier

Résumé en anglais

The synthesis of dendrimer-like polystyrene (PS) of second and third generations by combination of atom transfer radical polymerization (ATRP) and chain end modifications is reported. Calixarene-based cores were used as initiators for ATRP of styrene yielding star polymers containing precisely 4, 6, or 8 arms. The latter were modified in two steps so as to generate PS stars carrying 8, 12, or 16 terminal bromoisobutyrate groups, respectively. These precursors served as multifunctional macroinitiators for the formation of the second generation of dendrimer-like PS. Reiteration of the aforementioned sequence of reactions allowed to derive dendrimer-like polystyrene of third generation that were constituted of 16, 24, or 32 outer arms, respectively. The chain end modification was monitored by H-1 NMR spectroscopy. The dendrimer-like PS were also characterized by size exclusion chromatography equipped with a multiangle laser light scattering detector (SEC/MALLS). The actual polymer architecture and the functionality of the stars were confirmed by analysis of the individual arms obtained upon hydrolysis of the ester links present at the core of the stars and at the branching points. The intrinsic viscosities of these dendrimer-like polystyrenes are similar to those reported for regular dendrimers.< Réduire

Mots clés en anglais

COMBINATION

ARCHITECTURES

MACROMOLECULES

CONVENTIONAL MONOMERS

BLOCK-COPOLYMER

STAR POLYMERS

TERMINATOR MULTIFUNCTIONAL INITIATOR

WELL-DEFINED POLYSTYRENE

HYPERBRANCHED POLYMERS

ANIONIC-POLYMERIZATION

Métadonnées

Partager cette publication !

Licence d’utilisation du document

Synthesis of dendrimer-like polystyrene by atom transfer radical polymerization and investigation of their viscosity behavior

Langue

Ce document a été publié dans

Résumé en anglais

Mots clés en anglais

URI

DOI

Origine

Unités de recherche