Ring-opening metathesis polymerization on well defined silica nanoparticles leading to hybrid core–shell particles
Language
en
Article de revue
This item was published in
Journal of Materials Chemistry. 2003, vol. 13, n° 8, p. 1920-1925
Royal Society of Chemistry
English Abstract
The grafting and catalytic activity of a metathesis catalyst on well defined silica nanoparticles is described. The aim of this was to test the catalysis properties of a ligand-linked catalyst in ring-opening metathesis ...Read more >
The grafting and catalytic activity of a metathesis catalyst on well defined silica nanoparticles is described. The aim of this was to test the catalysis properties of a ligand-linked catalyst in ring-opening metathesis polymerization and also the possibility to obtain controlled hybrid materials. This was carried out by reaction of a synthesized hydroxy functionalized phosphine Cy2P(CH2)10OH with Cl2Ru(PPh3)2(CH–Ph), leading to a metathesis catalyst bearing a hydroxy group at the end of a ligand. This group was reacted with well defined silica nanoparticles with a diameter of 200 nm, that had acyl chloride functions at their surface. The grafting density was calculated from thermogravimetry experiments and found to be around 7 µmol m–2. The activity of the catalyst was tested for the ring-opening polymerization of norbornene...Read less <
English Keywords
Polymerization
Catalysts
Silica
Nanoparticles
Core-shell
Hydroxydecylphosphine
Ruthenium
Origin
Hal imported