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Covalently functionalized carbon nanostructures and methods for their separation

United States Patent

March 17, 2015
View the Complete Patent at the US Patent & Trademark Office
The present invention is directed to carbon nanostructures, e.g., carbon nanotubes, methods of covalently functionalizing carbon nanostructures, and methods of separating and isolating covalently functionalized carbon. In some embodiments, carbon nanotubes are reacted with alkylating agents to provide water soluble covalently functionalized carbon nanotubes. In other embodiments, carbon nanotubes are reacted with a thermally-responsive agent and exposed to light in order to separate carbon nanotubes of a specific chirality from a mixture of carbon nanotubes.
Wang; YuHuang (Laurel, MD), Brozena; Alexandra H. (Takoma Park, MD), Deng; Shunliu (College Park, MD), Zhang; Yin (Hyattsville, MD)
University of Maryland, College Park (College Park, MD)
13/ 439,029
April 4, 2012
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with government support under DESC001160 awarded by the Department of Energy. The government has certain rights to this invention.