MACROSCOPIC ORDERED ASSEMBLY OF CARBON NANOTUBES
    3.
    发明申请
    MACROSCOPIC ORDERED ASSEMBLY OF CARBON NANOTUBES 审中-公开
    碳纳米管的大型订购总成

    公开(公告)号:US20080210370A1

    公开(公告)日:2008-09-04

    申请号:US11840033

    申请日:2007-08-16

    摘要: The present invention is directed to the creation of macroscopic materials and objects comprising aligned nanotube segments. The invention entails aligning single-wall carbon nanotube (SWNT) segments that are suspended in a fluid medium and then removing the aligned segments from suspension in a way that macroscopic, ordered assemblies of SWNT are formed. The invention is further directed to controlling the natural proclivity or nanotube segments to self assemble into or ordered structures by modifying the environment of the nanotubes and the history of that environment prior to and during the process. The materials and objects are “macroscopic” in that they are large enough to be seen without the aid of a microscope or of the dimensions of such objects. These macroscopic ordered SWNT materials and objects have the remarkable physical, electrical, and chemical properties that SWNT exhibit on the microscopic scale because they are comprised of nanotubes, each of which is aligned in the same direction and in contact with its nearest neighbors. An ordered assembly of closest SWNT also serves as a template for growth of more and larger ordered assemblies. An ordered assembly further serves as a foundation for post processing treatments that modify the assembly internally to specifically enhance selected material properties such as shear strength, tensile strength, compressive strength, toughness, electrical conductivity, and thermal conductivity.

    摘要翻译: 本发明涉及包括对准的纳米管段的宏观材料和物体的产生。 本发明需要将悬浮在流体介质中的单壁碳纳米管(SWNT)段对准,然后以形成SWNT的宏观有序组件的方式从悬浮液中除去对准的段。 本发明进一步涉及通过在工艺之前和期间修改纳米管的环境和该环境的历史来控制天然倾向或纳米管段自组装成或有序的结构。 材料和物体是“宏观的”,因为它们足够大以便在没有显微镜或这些物体的尺寸的情况下被看到。 这些宏观有序的SWNT材料和物体具有卓越的物理,电学和化学性质,SWNT在微观尺度上显示,因为它们由纳米管组成,其中每个纳米管沿相同方向对齐并与其最近的邻近物接触。 最近的SWNT的有序组件也可以作为增加更多和更大订单组件的模板。 订购的组件还用作后处理处理的基础,其在内部改变组件以特异性地增强选定的材料性能,例如剪切强度,抗拉强度,抗压强度,韧性,导电性和导热性。

    Method for separating single-wall carbon nanotubes and compositions thereof
    4.
    发明授权
    Method for separating single-wall carbon nanotubes and compositions thereof 失效
    分离单壁碳纳米管的方法及其组合物

    公开(公告)号:US07074310B2

    公开(公告)日:2006-07-11

    申请号:US10379273

    申请日:2003-03-04

    IPC分类号: G01N27/447 B03C5/00 B01D15/08

    摘要: The invention relates to a process for sorting and separating a mixture of (n, m) type single-wall carbon nanotubes according to (n, m) type. A mixture of (n, m) type single-wall carbon nanotubes is suspended such that the single-wall carbon nanotubes are individually dispersed. The nanotube suspension can be done in a surfactant-water solution and the surfactant surrounding the nanotubes keeps the nanotube isolated and from aggregating with other nanotubes. The nanotube suspension is acidified to protonate a fraction of the nanotubes. An electric field is applied and the protonated nanotubes migrate in the electric fields at different rates dependent on their (n, m) type. Fractions of nanotubes are collected at different fractionation times. The process of protonation, applying an electric field, and fractionation is repeated at increasingly higher pH to separated the (n, m) nanotube mixture into individual (n, m) nanotube fractions. The separation enables new electronic devices requiring selected (n, m) nanotube types.

    摘要翻译: 本发明涉及一种根据(n,m)型分选(n,m)型单壁碳纳米管的混合物的方法。 (n,m)型单壁碳纳米管的混合物被悬浮,使得单壁碳纳米管分散分散。 纳米管悬浮液可以在表面活性剂 - 水溶液中进行,并且包围纳米管的表面活性剂保持纳米管分离并与其他纳米管聚集。 将纳米管悬浮液酸化以质子化纳米管的一部分。 施加电场,并且质子化的纳米管在电场中以取决于它们的(n,m)类型的不同速率迁移。 在不同的分馏时间收集纳米管的级分。 在越来越高的pH下重复质子化,施加电场和分级的过程,以将(n,m)纳米管混合物分离成单个(n,m)纳米管部分。 该分离使需要所选(n,m)纳米管类型的新电子器件成为可能。

    Method and apparatus for determining the length of single-walled carbon nanotubes
    6.
    发明授权
    Method and apparatus for determining the length of single-walled carbon nanotubes 失效
    用于确定单壁碳纳米管长度的方法和装置

    公开(公告)号:US06962092B2

    公开(公告)日:2005-11-08

    申请号:US10836551

    申请日:2004-04-30

    摘要: The present invention is directed to at least one method and at least one apparatus for determining the length of single-wall carbon nanotubes (SWNTs). The method generally comprises the steps of: dispersing a sample of SWNTs into a suitable dispersing medium to form a solvent-suspension of solvent-suspended SWNTs; determining the mean SWNT diameter of the solvent-suspended SWNTs; introducing the solvent-suspended SWNTs into a viscosity-measuring device; obtaining a specific viscosity for the SWNT solvent-suspension; and determining the length of the SWNTs based upon the specific viscosity by solving, for example, the Kirkwood-Auer equation corrected by Batchelor's formula for the drag on a slender cylinder for “L,” to determine the length of the SWNTs. The apparatus generally comprises: a SWNT sample introduction mechanism; a dispersal chamber; a SWNT radius-determination chamber; and a viscosity determining chamber, wherein the SWNT sample introduction mechanism, the dispersal chamber, the SWNT radius-determination chamber, and the viscosity determination chamber are each operatively connected to at least one of the others.

    摘要翻译: 本发明涉及用于确定单壁碳纳米管(SWNT)的长度的至少一种方法和至少一种装置。 该方法通常包括以下步骤:将SWNT样品分散到合适的分散介质中以形成溶剂悬浮的SWNT的溶剂 - 悬浮液; 确定溶剂悬浮的SWNT的平均SWNT直径; 将溶剂悬浮的SWNT引入粘度测量装置中; 获得SWNT溶剂 - 悬浮液的比粘度; 以及通过解决例如通过Batchelor公式修正的Kirkwood-Auer方程式来确定SWNTs的长度,以便通过在“L”的细长圆筒上拖动来确定SWNT的长度。 该装置通常包括:SWNT样品引入机构; 分散室; SWNT半径测定室; 和粘度确定室,其中SWNT样品引入机构,分散室,SWNT半径确定室和粘度确定室各自可操作地连接到至少其中之一。

    MULTI-STEP PURIFICATION OF SINGLE-WALL CARBON NANOTUBES
    9.
    发明申请
    MULTI-STEP PURIFICATION OF SINGLE-WALL CARBON NANOTUBES 有权
    单壁碳纳米管的多步纯化

    公开(公告)号:US20100008843A1

    公开(公告)日:2010-01-14

    申请号:US11291638

    申请日:2005-11-30

    IPC分类号: D01F9/12 B82B3/00

    摘要: 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 single-wall carbon nanotubes in addition to impurities including residual metal catalyst particles and amounts of small amorphous carbon sheets that surround the catalyst particles and appear on the side of the single-wall carbon nanotubes. The present purification processes remove the extraneous carbon as well as metal-containing residual catalyst particles.

    摘要翻译: 本发明涉及单壁碳纳米管(SWNT)的纯化方法。 单壁碳纳米管生产的已知方法导致单壁碳纳米管产物,除了包含残留金属催化剂颗粒的杂质和围绕催化剂颗粒的小的无定形碳片的含量之外,还包含单壁碳纳米管,并出现在 侧壁的单壁碳纳米管。 本纯化方法除去了外来的碳以及含金属的残留催化剂颗粒。

    Length-based liquid-liquid extraction of carbon nanotubes using a phase transfer catalyst
    10.
    发明授权
    Length-based liquid-liquid extraction of carbon nanotubes using a phase transfer catalyst 失效
    使用相转移催化剂的基于长度的液 - 液萃取碳纳米管

    公开(公告)号:US07578941B2

    公开(公告)日:2009-08-25

    申请号:US11289000

    申请日:2005-11-29

    IPC分类号: B01D11/02

    摘要: 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 directed to separating SWNTs on the basis of their length, wherein such methods comprise the steps of: (a) functionalizing SWNTs to form functionalized SWNTs with ionizable functional moieties; (b) dissolving said functionalized SWNTs in a polar solvent to form a polar phase; (c) dissolving a substoichiometric (relative to the amount of ionizable functional moieties present on the SWNTs) amount of a phase transfer agent in a non-polar solvent to form a non-polar phase; (d) combining the polar and non-polar phases to form a bi-phase mixture; (e) adding a cationic donor species to the bi-phase mixture; and (f) agitating the bi-phase mixture to effect the preferential transport of short SWNTs into the non-polar phase such that the non-polar phase is enriched in short SWNTs and the polar phase is enriched in longer SWNTs. In other embodiments, analogous methods are used for the length-based separation of any type of CNT, and more generally, for any type of 1-dimensional nanostructure.

    摘要翻译: 本发明一般涉及用于碳纳米管(CNT)和其它一维纳米结构的基于长度的分离的新的液 - 液萃取方法。 在一些实施方案中,这样的方法涉及基于其长度分离SWNT,其中此类方法包括以下步骤:(a)使SWNT官能化形成具有可离子化功能部分的官能化SWNT; (b)将所述官能化的单壁碳纳米管溶解在极性溶剂中以形成极性相; (c)在非极性溶剂中将相转移剂的亚化学计量(相对于存在于SWNT上的可离子化官能团的量)量溶解以形成非极性相; (d)组合极性和非极性相以形成双相混合物; (e)向双相混合物中加入阳离子供体物质; 和(f)搅拌双相混合物以实现短的单壁碳纳米管优先转运到非极性相中,使得非极性相富集在短的单壁碳纳米管中,极性相富集较长的单壁碳纳米管。 在其它实施方案中,类似的方法用于任何类型的CNT的长度分离,更通常地,对于任何类型的一维纳米结构。