US Patent Number
Naked single-walled nanotube carbon metals and semiconductors are dissolved in organic solutions by direct functionalization with amines or alkylaryl amines having an uninterrupted carbon chain of at least 5 and more preferably 9 carbon atoms in length.
University of Kentucky Research Foundation, Lexington, KY (US)
Haddon, Robert C. and Chen, Jian, "Solubilizing Single Walled Carbon Nanotubes by Direct Reaction with Amines and Alkylaryl Amines" (2001). Chemistry Faculty Patents. Paper 20.