Abstract:
The present invention pertains to therapeutic compositions that comprise: (1) a nanovector; (2) an active agent; and (3) a targeting agent, wherein the active agent and the targeting agent are non-covalently associated with the nanovector. The present invention also pertains to methods of treating various conditions in a subject by utilizing the above-described therapeutic compositions. Methods of making the therapeutic compositions are also a subject matter the present invention.
Abstract:
A highly oxidized form of graphene oxide and methods for production thereof are described in various embodiments of the present disclosure. In general, the methods include mixing a graphite source with a solution containing at least one oxidant and at least one protecting agent and then oxidizing the graphite source with the at least one oxidant in the presence of the at least one protecting agent to form the graphene oxide. Graphene oxide synthesized by the presently described methods is of a high structural quality that is more oxidized and maintains a higher proportion of aromatic rings and aromatic domains than does graphene oxide prepared in the absence of at least one protecting agent. Methods for reduction of graphene oxide into chemically converted graphene are also disclosed herein. The chemically converted graphene of the present disclosure is significantly more electrically conductive than is chemically converted graphene prepared from other sources of graphene oxide.
Abstract:
In various embodiments, the present disclosure describes processes for preparing functionalized graphene nanoribbons from carbon nanotubes. In general, the processes include exposing a plurality of carbon nanotubes to an alkali metal source in the absence of a solvent and thereafter adding an electrophile to form functionalized graphene nanoribbons. Exposing the carbon nanotubes to an alkali metal source in the absence of a solvent, generally while being heated, results in opening of the carbon nanotubes substantially parallel to their longitudinal axis, which may occur in a spiralwise manner in an embodiment. The graphene nanoribbons of the present disclosure are functionalized on at least their edges and are substantially defect free. As a result, the functionalized graphene nanoribbons described herein display a very high electrical conductivity that is comparable to that of mechanically exfoliated graphene.
Abstract:
Methods for dissolving carbon materials such as, for example, graphite, graphite oxide, oxidized graphene nanoribbons and reduced graphene nanoribbons in a solvent containing at least one superacid are described herein. Both isotropic and liquid crystalline solutions can be produced, depending on the concentration of the carbon material The superacid solutions can be formed into articles such as, for example, fibers and films, mixed with other materials such as, for example, polymers, or used for functionalization of the carbon material. The superacid results in exfoliation of the carbon material to produce individual particles of the carbon material. In some embodiments, graphite or graphite oxide is dissolved in a solvent containing at least one superacid to form graphene or graphene oxide, which can be subsequently isolated. In some embodiments, liquid crystalline solutions of oxidized graphene nanoribbons in water are also described.
Abstract:
Electronic devices comprising a dielectric material, at least one carbon sheet, and two electrode terminals are described herein. The devices exhibit non-linear current-versus-voltage response over a voltage sweep range in various embodiments. Uses of the electronic devices as two- terminal memory devices, logic units, and sensors are disclosed. Processes for making the electronic devices are disclosed. Methods for using the electronic devices in analytical methods are disclosed.
Abstract:
Vertically-stacked electronic devices having conductive carbon films are disclosed. The vertically-stacked devices exhibit non-linear current-versus-voltage response over a voltage sweep range in various embodiments. The vertically-stacked devices may be assembled into arrays where the vertically-stacked devices may be electrically addressed independently of one another. Uses of the vertically-stacked electronic devices and arrays as two-terminal memory devices, logic units, and sensors are disclosed. Crossbar arrays of vertically-stacked electronic devices having conductive carbon films and nanowire electrodes are disclosed.
Abstract:
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.
Abstract:
Electronic devices comprising a dielectric material, at least one carbon sheet, and two electrode terminals are described herein. The devices exhibit non-linear current-versus-voltage response over a voltage sweep range in various embodiments. Uses of the electronic devices as two- terminal memory devices, logic units, and sensors are disclosed. Processes for making the electronic devices are disclosed. Methods for using the electronic devices in analytical methods are disclosed.
Abstract:
Processes to make these composite materials or blends, and their shaped articles such as fibers, films and 3-D parts include mixing an acid intercalated SWNT-Rs with an acid soluble polymer and subjecting the resultant mixture to shear stresses. Composites and blends include loose single-walled carbon nanotube ropes (SWNT-Rs) and other acid-intercalatable carbon nanotube ropes with polymers such as aliphatic polyamides (nylon), aromatic polyamides (such as poly-p-phenylene terephthalamide, PPTA), or heterocyclic aromatic polymers (such as poly-p-phenylenebisbenzoxazole, PBO), or other materials which are soluble in common acidic media. Products such as fibers, films, and 3-dimensional articles are made from these materials.
Abstract:
The invented ink-jet printing method for the construction of thin film transistors using all SWNTs on flexible plastic films is a new process. This method is more practical than all of exiting printing methods in the construction TFT and RFID tags because SWNTs have superior properties of both electrical and mechanical over organic conducting oligomers and polymers which often used for TFT. Furthermore, this method can be applied on thin films such as paper and plastic films while silicon based techniques can not used on such flexible films. These are superior to the traditional conducting polymers used in printable devices since they need no dopant and they are more stable. They could be used in conjunction with conducting polymers, or as stand-alone inks.