US Patent Number
Naked carbon nanotubes are dissolved in organic solutions by terminating the nanotubes with carboxylic acid groups and attaching an aliphatic carbon chain so as to render the carbon nanotubes soluble.
University of Kentucky Research Foundation, Lexington, KY (US)
Haddon, Robert C.; Chen, Jian; and Hamon, Mark A., "Method of Solubilizing Unshortened Carbon Nanotubes in Organic Solutions" (2002). Chemistry Faculty Patents. Paper 21.