Now showing items 1-6 of 6

    • Fibers comprised of epitaxially grown single-wall carbon nanotubes- and a method for added catalyst and continuous growth at the tip 

      Kittrell, Carter W.; Wang, Yuhuang; Kim, Myung Jong; Hauge, Robert H.; Smalley, Richard E.; Marek, Irene Morin (2010-06-01)
      The present invention is directed to fibers of epitaxially grown single-wall carbon nanotubes (SWNTs) and methods of making same. Such methods generally comprise the steps of: (a) providing a spun SWNT fiber; (b) cutting ...
    • Length-based liquid-liquid extraction of carbon nanotubes using a phase transfer catalyst 

      Ziegler, Kirk J.; Schmidt, Daniel J.; Hauge, Robert H.; Smalley, Richard E.; Marek, Irene Morin (2009-08-25)
      The present invention is generally directed to new liquid-liquid extraction methods for the length-based separation of carbon nanotubes (CNTs) and other 1-dimensional nanostructures. In some embodiments, such methods are ...
    • Methods for selective functionalization and separation of carbon nanotubes 

      Strano, Michael S.; Usrey, Monica; Barone, Paul; Dyke, Christopher A.; Tour, James M.; Kittrell, Carter W.; Hauge, Robert H.; Smalley, Richard E.; Marek, Irene Morin (2011-02-15)
      The present invention is directed toward methods of selectively functionalizing carbon nanotubes of a specific type or range of types, based on their electronic properties, using diazonium chemistry. The present invention ...
    • Multi-step purification of single-wall carbon nanotubes 

      Hauge, Robert H.; Xu, Ya-Qiong; Peng, Haiqing; Smalley, Richard E.; Marek, Irene Morin (2010-03-02)
      The present invention relates to processes for the purification of single-wall carbon nanotubes (SWNTs). Known methods of single-wall carbon nanotube production result in a single-wall carbon nanotube product that contains ...
    • Ozonation of carbon nanotubes in fluorocarbons 

      Ziegler, Kirk J.; Shaver, Jonah; Hauge, Robert H.; Marek, Irene Morin (2008-12-30)
      The present invention is generally directed to methods of ozonating CNTs in fluorinated solvents (fluoro-solvents), wherein such methods provide a less dangerous alternative to existing ozonolysis methods. In some embodiments, ...
    • Purification of carbon nanotubes based on the chemistry of fenton's reagent 

      Marek, Irene Morin; Wang, Yuhuang; Hauge, Robert H.; Shan, Hongwei (2009-02-24)
      The present invention is directed to methods of purifying carbon nanotubes (CNTs). In general, such methods comprise the following steps: (a) preparing an aqueous slurry of impure CNT material; (b) establishing a source ...