Patent ID: 7115688
Filing Date: 2006-10-03
Classification: B82Y,G01N

Abstract:
1. A method of preparing nanoparticles having at least one polymer shell attached thereto, said method comprising: providing a nanoparticle and initiation monomers, the nanoparticle having a surface; attaching the initiation monomers to the surface of the nanoparticle; contacting the nanoparticle having the initiation monomers attached thereto with a transition metal ring-opening metathesis catalyst to activate the initiation monomers; and contacting the nanoparticle with propagation monomers of the formula P—L—N under conditions effective so that the propagation monomers are polymerized to form at least one polymer shell attached to the nanoparticles, wherein: N is a cyclic olefin-containing group; P is a moiety which gives each polymer shell one or more selected properties; and L is a bond or linker whereby N is attached to P.