Molecular weight; Polydispersity (atom transfer radical polymn. of Me methacrylate catalyzed by homo- and heterobimetallic ruthenium complexes); Polymerization catalysts; Polymerization kinetics (atom transfer, radical; atom transfer radical polymn. of Me methacrylate catalyzed by homo- and heterobimetallic ruthenium complexes); methyl methacrylate atom transfer radical polymn ruthenium catalyst
Abstract :
[en] The atom transfer radical polymn. of Me methacrylate was studied in the presence of 6 novel homo- and heterobimetallic Ru complexes: (p-cymene)RuCl2/(PCy3)(ethylene)RuCl2, (p-cymene)RuCl2/(1,3-Mes2-4,5-X2-imidazolin-2-ylidene)(ethylene)RuCl2 (X = H or Cl, Mes = 2,4,6-trimethylphenyl), and (p-cymene)RuCl2/[(2-dicyclohexylphosphinoethyl)cyclopentadienyl](Cp)TiX2 (X = F, Cl, or OBz). Et 2-bromoisobutyrate was used as initiator in all expts. All catalysts showed high efficiency in controlled synthesis of poly(Me methacrylate). Using the ruthenium/titanocene dibenzoate complex, the polymn. stopped after a few hours of reaction, affording nevertheless a polymer with a decent polydispersity.
Disciplines :
Chemistry
Author, co-author :
Borguet, Yannick ; Université de Liège - ULiège > Département de chimie (sciences) > Chimie macromoléculaire et catalyse organique
Delfosse, Sebastien
Sauvage, Xavier ; Université de Liège - ULiège > Département de chimie (sciences) > Chimie macromoléculaire et catalyse organique
Delaude, Lionel ; Université de Liège - ULiège > Département de chimie (sciences) > Chimie macromoléculaire et catalyse organique
Demonceau, Albert ; Université de Liège - ULiège > Département de chimie (sciences) > Chimie macromoléculaire et catalyse organique
Bareille, Laurianne
Le Gendre, Pierre
Moise, Claude
Language :
English
Title :
ATRP of methyl methacrylate catalysed by novel homo- and heterobimetallic ruthenium complexes
Publication date :
2008
Audience :
International
Journal title :
Polymer Preprints
ISSN :
0032-3934
Publisher :
American Chemical Society, Washington, United States - District of Columbia
