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85 条记录 (耗时 0.016 秒)

    FUNCTIONALIZATION OF CARBON NANOTUBES IN ACIDIC MEDIA
    81.
    发明申请
    FUNCTIONALIZATION OF CARBON NANOTUBES IN ACIDIC MEDIA 审中-公开
    碳纳米管在酸性介质中的功能化

    公开(公告)号：WO2005113434A1

    公开(公告)日：2005-12-01

    申请号：PCT/US2005/009677

    申请日：2005-03-24

    申请人： WILLIAM MARSH RICE UNIVERSITY ,  TOUR, James, M. ,  HUDSON, Jared, L. ,  DYKE, Christopher R. ,  STEPHENSON, Jason, J.

    发明人： TOUR, James, M. ,  HUDSON, Jared, L. ,  DYKE, Christopher R. ,  STEPHENSON, Jason, J.

    IPC分类号： C01B31/02

    CPC分类号： B82Y30/00 ,  B82Y40/00 ,  C01B32/174 ,  C01B2202/02 ,  C01B2202/04 ,  C01B2202/06 ,  C01B2202/36

    摘要： The present invention is generally directed to methods of functionalizing carbon nanotubes (CNTs) in acidic media. By first dispersing CNTs in an acidic medium, bundled CNTs can be separated as individual CNTs, affording exposure of the CNT sidewalls, and thereby facilitating the functionalization of such CNTs, wherein functional groups are attached to the subsequently exposed sidewalls of these individualized CNTs. Once dispersed in this substantially unbundled state, the CNTs are functionalized according to one or more of a variety of functionalization processes. Typically, ultrasonication or non-covalent wrapping is not needed to afford such dispersion and subsequent functionalization. Additionally, such methods are easily scalable and can provide for sidewall-functionalized CNTs in large, industrial-scale quantities.

    摘要翻译： 本发明一般涉及在酸性介质中官能化碳纳米管（CNTs）的方法。 通过首先将CNT分散在酸性介质中，可将捆束的CNT作为单独的CNT分离，提供CNT侧壁的暴露，从而促进这种CNT的功能化，其中官能团连接到这些个体化CNT的随后暴露的侧壁。 一旦分散在这个基本上未分类的状态，CNT根据各种官能化过程中的一种或多种而被官能化。 通常，不需要超声波或非共价包装来提供这种分散和随后的功能化。 另外，这种方法易于扩展，并且可以以大型工业规模的量提供侧壁官能化的CNT。

    THERMAL TREATMENT OF FUNCTIONALIZED CARBON NANOTUBES IN SOLUTION TO EFFECT THEIR DEFUNCTIONALIZATION
    82.
    发明申请
    THERMAL TREATMENT OF FUNCTIONALIZED CARBON NANOTUBES IN SOLUTION TO EFFECT THEIR DEFUNCTIONALIZATION 审中-公开
    功能化碳纳米管在溶液中的热处理对其失效的影响

    公开(公告)号：WO2005049488A2

    公开(公告)日：2005-06-02

    申请号：PCT/US2004/035894

    申请日：2004-10-28

    申请人： WILLIAM MARSH RICE UNIVERSITY ,  TOUR, James, M. ,  DYKE, Christopher, A.

    发明人： TOUR, James, M. ,  DYKE, Christopher, A.

    IPC分类号： C01B31/00

    CPC分类号： B82Y40/00 ,  B82Y30/00 ,  C01B32/168 ,  C01B2202/02 ,  C01B2202/04 ,  C01B2202/06 ,  C01B2202/22

    摘要： The present invention is directed towards methods of thermally defunctionalizing functionalized (derivatized) carbon nanotubes (CNTs) in solution or suspended in a liquid medium. Such defunctionalization largely comprises the removal of sidewall functionality from the CNTs, but can also serve to remove functionality from the CNT ends. Such methods facilitate the resuspension of such defunctionalized CNTs in various solvents and permit the defunctionalization of functionalized CNTs that would normally decompose (or partially decompose) upon thermal treatment. Such methods of defunctionalization can typically lead to defunctionalized CNTs that are essentially pristine (or nearly pristine), and which, in contrast to prior art methods of thermal defunctionalization, can be easily resuspended in a variety of solvents.

    摘要翻译： 本发明涉及使溶液中或悬浮于液体介质中的官能化（衍生）碳纳米管（CNT）热去官能化的方法。 这种去官能化主要包括从CNT去除侧壁官能团，但也可用于从CNT端去除官能团。 这种方法有助于将这种去官能化CNT重新悬浮在各种溶剂中，并且允许官能化CNT的去官能化，其在热处理时通常会分解（或部分分解）。 这种去官能化的方法通常可以导致基本上是原始的（或几乎原始的）去官能化的CNT，并且与现有技术的热去官能化方法相比，其可以容易地重悬在各种溶剂中。

    POLYMERIZATION INITIATED AT THE SIDEWALLS OF CARBON NANOTUBES
    83.
    发明申请
    POLYMERIZATION INITIATED AT THE SIDEWALLS OF CARBON NANOTUBES 审中-公开
    碳纳米管侧壁引发聚合

    公开(公告)号：WO2005030858A2

    公开(公告)日：2005-04-07

    申请号：PCT/US2004/019769

    申请日：2004-06-21

    申请人： WILLIAM MARSH RICE UNIVERSITY ,  UNIVERSITY OF HOUSTON ,  TOUR, James, M. ,  HUDSON, Jared, L. ,  KRISHNAMOORTI, Ramanan ,  YURELKI, Koray ,  MITCHELL, Cynthia, A.

    发明人： TOUR, James, M. ,  HUDSON, Jared, L. ,  KRISHNAMOORTI, Ramanan ,  YURELKI, Koray ,  MITCHELL, Cynthia, A.

    IPC分类号： C08K9/00

    CPC分类号： C08F4/484 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/174 ,  C01B2202/02 ,  C08F2/00 ,  C08F112/08 ,  C08F292/00 ,  C08K3/041 ,  C08K9/04 ,  C08L67/04

    摘要： The present invention is directed to aryl halide (such as aryl bromide) functionalized carbon nanotubes can be utilized in anionic polymerization processes to form polymer-carbon nanotube materials with improved dispersion ability in polymer matrices. In this process the aryl halide is reacted with an alkyllithium species or is reacted with a metal to replace the aryl-bromine bond with an aryl-lithium or aryl-metal bond, respectively. It has further been discovered that other functionalized carbon nanotubes, after deprotonation with a deprotonation agent, can similarly be utilized in anionic polymerization processes to form polymer-carbon nanotube materials. Additionally or alternatively, a ring opening polymerization process can be performed. The resultant materials can be used by themselves due to their enhanced strength and reinforcement ability when compared to their unbound polymer analogs. Additionally, these materials can also be blended with pre-formed polymers to establish compatibility and enhanced dispersion of nanotubes in otherwise hard to disperse matrices resulting in significantly improved material properties. The resultant polymer-carbon nanotube materials can also be used in drug delivery processes due to their improved dispersion ability and biodegradability, and can also be used for scaffolding to promote cellular growth of tissue.

    摘要翻译： 本发明涉及芳基卤化物（例如芳基溴化物）官能化的碳纳米管可用于阴离子聚合方法中以形成在聚合物基质中具有改进的分散能力的聚合物 - 碳纳米管材料。 在该方法中，芳基卤化物与烷基锂物质反应或者与金属反应以分别用芳基 - 锂或芳基 - 金属键代替芳基 - 溴键。 进一步发现，在用去质子化剂去质子化之后，其他官能化的碳纳米管可以类似地用于阴离子聚合过程以形成聚合物 - 碳纳米管材料。 另外或可选地，可以执行开环聚合过程。 与未结合的聚合物类似物相比，由此产生的材料可以自身使用，因为它们具有增强的强度和增强能力。 此外，这些材料还可以与预先形成的聚合物混合，以建立纳米管在其他难分散基质中的相容性和增强的分散性，导致显着改善的材料性能。 所得到的聚合物 - 碳纳米管材料由于其改善的分散能力和可生物降解性也可用于药物递送过程中，并且还可用于支架以促进组织的细胞生长。

    SELF-ASSEMBLY OF MOLECULES AND NANOTUBES AND/OR NANOWIRES IN NANOCELL COMPUTING DEVICES, AND METHODS FOR PROGRAMMING SAME
    85.
    发明申请
    SELF-ASSEMBLY OF MOLECULES AND NANOTUBES AND/OR NANOWIRES IN NANOCELL COMPUTING DEVICES, AND METHODS FOR PROGRAMMING SAME 审中-公开
    纳米计算装置中分子和纳米管和/或纳米线的自组装及编程相同的方法

    公开(公告)号：WO2004068497A2

    公开(公告)日：2004-08-12

    申请号：PCT/US2004/002266

    申请日：2004-01-28

    申请人： WILLIAM MARSH RICE UNIVERSITY ,  TOUR, James, M. ,  CHENG, Long ,  FRANZON, Paul, D. ,  NACKASHI, David

    发明人： TOUR, James, M. ,  CHENG, Long ,  FRANZON, Paul, D. ,  NACKASHI, David

    IPC分类号： G11C

    CPC分类号： G11C13/025 ,  B82Y10/00 ,  G11C13/0014 ,  H01L27/28 ,  H01L51/0048 ,  H01L51/005 ,  H01L51/0052 ,  H01L51/0595

    摘要： An assembly of a NanoCell comprising a disordered array of metallic islands interlinked with molecules between metallic input/output leads and with disordered arrays of molecules and Au islands is disclosed. The NanoCell may function both as a memory device that is programmable post-fabrication. The assembled NanoCells exhibit reproducible switching behavior and at least two types of memory effects at room temperature. The switch-type memory is characteristic of a destructive read while the conductivity-type memory features a nondestructive read. Both types of s memory effects are stable for more than a week at room temperature and bit level ratios (0:1) of the conductivity-type memory have been observed to be as high as 10 4 :1 and reaching 10 6 :1 upon ozone treatment which likely destroys extraneous leakage pathways. The invention demonstrates the efficacy of a disordered nano-scale array for high-yielding switching and memory while mitigating the arduous task of nano-scale patterning.

    摘要翻译： 公开了包含与金属输入/输出引线之间的分子以及具有无序排列的分子和Au岛之间的分子的金属岛的无序阵列的NanoCell组件。 NanoCell可以作为可编程后期制作的存储设备。 组装的NanoCells在室温下表现出可重现的开关行为和至少两种类型的记忆效应。 开关型存储器具有破坏性读取的特性，而导电型存储器具有非破坏性读取功能。 两种类型的记忆效应在室温下稳定超过一周，并且已经观察到电导率型记忆的比特水平比（0：1）高达10 4：1：1 并在臭氧处理后达到10 6：1：1，这可能会破坏外部泄漏路径。 本发明展示了无序纳米级阵列用于高产率开关和记忆的功效，同时减轻了纳米级图案化的艰巨任务。