摘要:
A method of reducing side effects of damage in a human subject exposed to radiation includes administering to the human subject carbon nanotubes in a pharmaceutically acceptable carrier after or prior to exposure to radiation. A composition for reducing radical damage includes a carbon nanotube which is functionalized (1) for substantial water solubility and (2) with a radical trapping agent appended to the carbon nanotube forming a radical scavenger-carbon nanotube conjugate.
摘要:
Methods for producing macroscopic quantities of oxidized graphene nanoribbons are disclosed herein. The methods include providing a plurality of carbon nanotubes and reacting the plurality of carbon nanotubes with at least one oxidant to form oxidized graphene nanoribbons. The at least one oxidant is operable to longitudinally open the carbon nanotubes. In some embodiments, the reacting step takes place in the presence of at least one acid. In some embodiments, the reacting step takes place in the presence of at least one protective agent. Various embodiments of the present disclosure also include methods for producing reduced graphene nanoribbons by reacting oxidized graphene nanoribbons with at least one reducing agent. Oxidized graphene nanoribbons, reduced graphene nanoribbons and compositions and articles derived therefrom are also disclosed herein.
摘要:
This invention is generally related to a method of making a molecule-surface interface comprising at least one surface comprising at least one material and at least one organic group wherein the organic group is adjoined to the surface and the method comprises contacting at least one organic group precursor with at least one surface wherein the organic group precursor is capable of reacting with the surface in a manner sufficient to adjoin the organic group and the surface.
摘要:
In some embodiments, the present invention relates to new processes to simultaneously shorten and functionalize raw or purified carbon nanotubes to improve their dispersity and processibility, and the short functionalized nanotubes that may be made by the processes. This present invention also relates to new compositions of matter using short functionalized carbon nanotubes with thermoset, thermoplastic polymers, high temperature polymers, and other materials; the processes for making such composite materials; and the products of said processes.
摘要:
A hybrid molecular electronic device having switching, memory, and sensor application is disclosed. In one embodiment, the device resembles a conventional field-effect transistor (FET) formed on a silicon-on-insulator (SOI) substrate. Source and drain doped regions are formed in an upper surface of the SOI substrate, and a metallization layer which can serve as a gate contact is formed on a lower surface of the SOI substrate. A channel region spanning between the doped source and drain regions is left exposed, in order that a monolayer of molecules may be formed therein. Upon application of appropriate gating voltages to the gate contact, conduction between the source and drain regions can be modulated, possibly as a result of the reduction and oxidation of the molecules grafted to the gate region.
摘要:
The present invention is directed towards methods (processes) of providing large quantities of carbon nanotubes (CNTs) of defined diameter and chirality (i.e., precise populations). In such processes, CNT seeds of a pre-selected diameter and chirality are grown to many (e.g., hundreds) times their original length. This is optionally followed by cycling some of the newly grown material back as seed material for regrowth. Thus, the present invention provides for the large-scale production of precise populations of CNTs, the precise composition of such populations capable of being optimized for a particular application (e.g., hydrogen storage). The present invention is also directed to complexes of CNTs and transition metal catalyst precurors, such complexes typically being formed en route to forming CNT seeds.
摘要:
The present invention is directed towards processes for covalently attaching molecular wires and molecular electronic devices to carbon nanotubes and compositions thereof. Such processes utilize diazonium chemistry to bring about this marriage of wire-like nanotubes with molecular wires and molecular electronic devices.
摘要:
The present invention is directed toward methods of selectively functionalizing carbon nanotubes of a specific type or range of types, based on their electronic properties, using diazonium chemistry. The present invention is also directed toward methods of separating carbon nanotubes into populations of specific types or range(s) of types via selective functionalization and electrophoresis, and also to the novel compositions generated by such separations.
摘要:
A nanoporous (NP) memory may include a non-porous layer and a nanoporous layer sandwiched between the bottom and top electrodes. The memory may be free of diodes, selectors, and/or transistors that may be necessary in other memories to mitigate crosstalk. The nanoporous material of the nanoporous layer may be a metal oxide, metal chalcogenide, or a combination thereof. Further, the memory may lack any additional components. Further, the memory may be free from requiring an electroformation process to allow switching between ON/OFF states.
摘要:
In some embodiments, the present invention provides methods of treating oxidative stress in a subject by administering a therapeutic composition to the subject. In some embodiments, the therapeutic composition comprises a carbon nanomaterial with anti-oxidant activity. In some embodiments, the anti-oxidant activity of the carbon nanomaterial corresponds to ORAC values between about 200 to about 15,000. In some embodiments, the administered carbon nanomaterials include at least one of single-walled nanotubes, double-walled nanotubes, triple-walled nanotubes, multi-walled nanotubes, ultra-short nanotubes, graphene, graphene nanoribbons, graphite, graphite oxide nanoribbons, carbon black, oxidized carbon black, hydrophilic carbon clusters, and combinations thereof. In some embodiments, the carbon nanomaterial is an ultra-short single-walled nanotube that is functionalized with a plurality of solubilizing groups. In some embodiments, the carbon nanomaterial is a polyethylene glycol functionalized hydrophilic carbon cluster (PEG-HCC). In some embodiments, the administered therapeutic compositions of the present invention may also include an active agent or targeting agent associated with the carbon nanomaterial. Additional embodiments of the present invention pertain to the aforementioned carbon nanomaterial compositions for treating oxidative stress.