Chemical derivatization of single-wall carbon nanotubes to...

C - Chemistry – Metallurgy – 01 – B

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C01B 31/02 (2006.01) B01J 21/18 (2006.01) B01J 23/74 (2006.01) B01J 35/06 (2006.01) D01F 11/12 (2006.01) B01J 23/755 (2006.01)

Patent

CA 2344577

This invention is directed to making chemical derivatives of carbon nanotubes and to uses for the derivatized nanotubes, including making arrays as a basis for synthesis of carbon fibers. In one embodiment, this invention also provides a method for preparing single wall carbon nanotubes having substituents attached to the side wall of the nanotube by reacting single wall carbon nanotubes with fluorine gas and recovering fluorine derivatized carbon nanotubes, then reacting fluorine derivatized carbon nanotubes with a nucleophile. Some of the fluorine substituents are replaced by nucleophilic substitution. If desired, the remaining fluorine can be completely or partially eliminated to produce single wall carbon nanotubes having substituents attached to the side wall of the nanotube. The substituents will, of course, be dependent on the nucleophile, and preferred nucleophiles include alkyl lithium species such as methyl lithium.

L'invention concerne la fabrication de dérivés chimiques de nanotubes de carbone et des utilisations des nanotubes dérivés, y compris la fabrication de réseaux comme base pour une synthèse de fibres de carbone. Dans un mode de réalisation, il s'agit également d'un procédé permettant de préparer des nanotubes de carbone à paroi unique sur laquelle sont fixés des substituants par réaction desdits nanotubes avec du fluor, et récupération de nanotubes de carbone dérivés du fluor, puis par réaction desdits nanotubes avec un nucléophile. Certains substituants du fluor sont remplacés par une substitution nucléophile. Si on le souhaite, le fluor restant peut être complètement ou partiellement éliminé de façon à produire des nanotubes de carbone à paroi unique sur laquelle sont fixés des substituants. Les substituants sont fonction, bien entendu, du nucléophile, les nucléophiles préférés comprenant des espèces du lithium d'alkyle, le lithium de méthyle, par exemple.

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