A method of functionalizing carbon nanotubes with metallic moieties is disclosed. Carbon nanotubes are first associated with one or more binding moieties to provide carbon nanotubes encapsulated by the binding moieties. The encapsulated carbon nanotubes are then contacted with a metal salt or a metal complex that binds to the binding moieties. Reduction of the metal salt or metal complex provides carbon nanotubes functionalized with metal nanoparticles.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
 The United States Government has certain rights to this invention pursuant to Grant No. DE-FG02-03ER15457 from the Department of Energy and Grant No. DAMD17-05-1-0381 from the United States Army Telemedicine and Advanced Technology Research Center, both to Northwestern University.