Chemical derivatization of single-wall carbon nanotubes to facilitate solvation thereof, and use of derivatized nanotubes
    91.
    发明授权
    Chemical derivatization of single-wall carbon nanotubes to facilitate solvation thereof, and use of derivatized nanotubes 失效
    单壁碳纳米管的化学衍生化以促进其溶剂化,以及衍生的纳米管的使用

    公开(公告)号:US06835366B1

    公开(公告)日:2004-12-28

    申请号:US09787473

    申请日:2001-03-16

    IPC分类号: D01F912

    摘要: 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.

    摘要翻译: 本发明涉及制备碳纳米管的化学衍生物和衍生纳米管的用途,包括制备阵列作为碳纤维合成的基础。 在一个实施方案中,本发明还提供了通过使单壁碳纳米管与氟气反应并回收氟衍生的碳纳米管,制备具有连接到纳米管侧壁上的取代基的单壁碳纳米管的方法,然后使氟衍生的碳纳米管与 亲核试剂 一些氟取代基被亲核取代取代。 如果需要,可以完全或部分地除去剩余的氟以产生具有连接到纳米管的侧壁上的取代基的单壁碳纳米管。 取代基当然取决于亲核试剂,优选的亲核试剂包括烷基锂物质如甲基锂。 或者,可以通过使氟衍生的碳纳米管与各种量的肼,取代的肼或烷基胺反应,从氟衍生的碳纳米管中完全或部分地除去氟。 本发明还提供用于生长单壁碳纳米管的种子材料,其包含多个单壁碳纳米管或具有在侧壁的外表面上共价结合或物理吸附的催化剂前体部分的短管状分子,以提供最佳金属簇尺寸 导致金属部分迁移到管端的条件。

    Process for making fullerene fibers
    93.
    发明授权
    Process for making fullerene fibers 失效
    制备富勒烯纤维的方法

    公开(公告)号:US5591312A

    公开(公告)日:1997-01-07

    申请号:US441432

    申请日:1995-05-15

    IPC分类号: D01F9/12

    摘要: This invention provides a method and apparatus for producing fullerene fibers by establishing an electric field between a needle electrode and an opposing electrode in the presence of carbon and a heat source. Carbon is directed by the electric field to the needle electrode and heated by the heat source to form a carbon-carbon bonded fullerene network. The needle electrode may be moved to lengthen the fullerene network into a fullerene fiber. Fullerene fibers of 0.5 cm or longer may be produced by this method.

    摘要翻译: 本发明提供一种通过在碳和热源的存在下在针状电极和对置电极之间建立电场来制造富勒烯纤维的方法和装置。 碳通过电场引导到针电极,并被热源加热以形成碳 - 碳键合的富勒烯网络。 可以移动针状电极以将富勒烯网络延长成富勒烯纤维。 0.5cm以上的富勒烯纤维可以通过该方法制造。

    Solar process for making fullerenes
    94.
    发明授权
    Solar process for making fullerenes 失效
    制造富勒烯的太阳能工艺

    公开(公告)号:US5556517A

    公开(公告)日:1996-09-17

    申请号:US483045

    申请日:1995-06-07

    IPC分类号: C01B31/02 F24S20/20

    摘要: This invention provides an improved process and apparatus for making fullerenes by vaporizing carbon and conducting the resulting carbon vapor to a dark zone for fullerene growth and annealing. In one embodiment concentrated solar energy is used to vaporize carbon. In a further embodiment, concentrated solar energy may be used to improve fullerene yields by vaporizing carbon and further to prevent carbon cluster formation until the carbon vapor passes into a dark zone for fullerene growth and annealing. The invention provides an improvement to increase the yield of any known process wherein carbon is vaporized under high light conditions, the improvement comprising providing a dark zone for fullerene growth and annealing.

    摘要翻译: 本发明提供了一种改进的制备富勒烯的方法和装置,该方法和装置通过将碳蒸发并将所得碳蒸汽导入黑色区域进行富勒烯生长和退火。 在一个实施方案中,使用集中的太阳能来蒸发碳。 在另一个实施方案中,可以使用浓缩的太阳能来通过汽化碳来改善富勒烯产率,并且进一步防止碳簇形成,直到碳蒸汽进入黑色区域以进行富勒烯生长和退火。 本发明提供了提高任何已知方法的产率的改进,其中碳在高光条件下蒸发,改进包括为富勒烯生长和退火提供暗区。