Contribution to collective works (Parts of books)Controlled radical polymerisation of vinyl monomers catalysed by ruthenium N-heterocyclic carbene complexes
Delfosse, Sebastien; Richel, Aurore; Borguet, Yannick et al.
2005 • In Matyjaszewski, Krzysztof (Ed.) Controlled/living radical polymerization. From synthesis to materials
Keywords :
Polymerization catalysts; Polymerization kinetics (atom transfer, radical; controlled radical polymn. of vinyl monomers catalyzed by ruthenium N-heterocyclic carbene complexes); atom transfer radical polymn catalyst ruthenium heterocyclic carbene; methyl methacrylate ATRP polymn ruthenium heterocyclic carbene catalyst; styrene ATRP polymn ruthenium heterocyclic carbene catalyst
Abstract :
[en] N-heterocyclic carbene (NHC)-modified ruthenium catalysts of type [RuCl2(p-cymene)(NHC)] (NHC = substituted 2,3-dihydro-1H-imidazol-2-ylidenes: 1,3-Mes2-4,5-Me2, 1,3-Mes2-4,5-H2, 1,3-Mes2-4,5-Cl2, 1,3-Cy2-4,5-Me2, and 1,3-Cy2-4,5-H2; Mes = mesityl, Cy = cyclohexyl) were prepd. beforehand or in situ by combining the [RuCl2(p-cymene)] dimer with the imidazolium salt in presence of a base (e.g., t-BuOK, Cs2CO3, or Al(OiPr)3). The catalysts were then used in homogeneous atom transfer radical polymns. of Me methacrylate and styrene. The polymn. outcome was studied in dependence of catalyst (substitution pattern) and base.
