Surface modification of multiwalled carbon nanotubes by poly(2-vinylpyridine):: Dispersion, selective deposition, and decoration of the nanotubes

Polymer modification of carbon nanotubes is accomplished using a grafting-to approach. Radicals formed by the thermolysis of poly(2-vinylpyridine) terminated with a radical-stabilizing nitroxide can react with the surface of nanotubes (see Figure), resulting in grafting densities up to 12 wt.-%. The modified nanotubes. which are easily dispersed in water. can immobilize metal nanoclusters on their surfaces.