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Article Dans Une Revue Journal of Materials Chemistry Année : 2003

Ring-opening metathesis polymerization on well defined silica nanoparticles leading to hybrid core–shell particles

Résumé

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...

Domaines

Matériaux
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Dates et versions

hal-00189357 , version 1 (20-11-2007)

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Citer

Anne-Françoise Mingotaud, Stéphane Reculusa, Christophe Mingotaud, Patrick Keller, C. Sykes, et al.. Ring-opening metathesis polymerization on well defined silica nanoparticles leading to hybrid core–shell particles. Journal of Materials Chemistry, 2003, 13 (8), pp.1920-1925. ⟨10.1039/b301653f⟩. ⟨hal-00189357⟩
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