Dispersions and solutions of fluorinated single-wall carbon nanotubes

   
   

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. Alternatively, fluorine may be fully or partially removed from fluorine derivatized carbon nanotubes by reacting the fluorine derivatized carbon nanotubes with various amounts of hydrazine, substituted hydrazine or alkyl amine. The present invention also provides seed materials for growth of single wall carbon nanotubes comprising a plurality of single wall carbon nanotubes or short tubular molecules having a catalyst precursor moiety covalently bound or physisorbed on the outer surface of the sidewall to provide the optimum metal cluster size under conditions that result in migration of the metal moiety to the tube end.

Esta invenção é dirigida a fazer derivatives químicos de nanotubes do carbono e aos usos para os nanotubes derivatized, including fazer disposições como uma base para a síntese de fibras do carbono. Em uma incorporação, esta invenção fornece também um método preparando os únicos nanotubes do carbono da parede que têm os substituents unidos à parede lateral do nanotube reagindo únicos nanotubes do carbono da parede com o gás do fluorine e recuperando nanotubes derivatized fluorine do carbono, reagindo então nanotubes derivatized fluorine do carbono com um nucleophile. Alguns dos substituents do fluorine são substituídos pela substituição nucleophilic. Se desejado, o fluorine restante pode para eliminar completamente ou parcialmente para produzir os únicos nanotubes do carbono da parede que têm os substituents unidos à parede lateral do nanotube. Os substituents, naturalmente, serão dependentes do nucleophile, e os nucleophiles preferidos incluem espécies alkyl do lítio tais como o lítio methyl. Alternativamente, o fluorine pode para remover inteiramente ou parcialmente dos nanotubes derivatized fluorine do carbono reagindo os nanotubes derivatized fluorine do carbono com as várias quantidades de hydrazine, de hydrazine substituído ou de amine do alkyl. A invenção atual também fornece materiais da semente para o crescimento dos únicos nanotubes do carbono da parede que compreendem um plurality dos únicos nanotubes do carbono da parede ou as moléculas tubulares do short que têm um moiety do precursor do catalizador limitado covalently ou physisorbed na superfície exterior do sidewall para fornecer o tamanho o melhor do conjunto do metal sob as circunstâncias que resultam na migração do moiety do metal à extremidade do tubo.

 
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