Modified With Biological, Organic, Or Hydrocarbon Material Patents (Class 977/746)
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Publication number: 20110038794Abstract: The present invention relates to a method of radiolabelling carbon nanotubes, to the radiolabelled carbon nanotubes that can be obtained by implementing this method, and to applications thereof.Type: ApplicationFiled: November 6, 2008Publication date: February 17, 2011Applicant: Commissariat ! L'Energie Atomique Et Aux Engeries AlternativesInventors: Frederic Taran, Dominique Georgin
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Publication number: 20110017985Abstract: The present invention is an electronic device and a process for making the electronic device in which the semiconductor component comprises at least one carbon nanotube functionalized with a fluorinated olefin. Functionalization with the fluorinated olefin renders the carbon nanotube semiconducting.Type: ApplicationFiled: April 1, 2009Publication date: January 27, 2011Inventors: Graciela Beatriz Blanchet, Helen S.M. Lu
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Publication number: 20100331202Abstract: Nanotubes and nanotube array structures comprise (a) a nanotube having an inner wall portion; and (b) a bilayer coating formed on the inner wall portions, with the bilayer coating comprised of surfactants. A secondary compound such as a protein, peptide or nucleic acid may be associated with the bilayer coating. The structures are useful for, among other things, affinity purification, catalysis, and as biochips.Type: ApplicationFiled: December 8, 2008Publication date: December 30, 2010Applicant: North Carolina State UniversityInventor: Alex I. Smirnov
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Patent number: 7858648Abstract: The present invention relates to the use of a carbon nanotube comprising positive and/or negative charges, the charges being carried by at least one charge-carrying group, the charge carrying group being covalently bound to the surface of the carbon nanotube, for the manufacture of a complex between the carbon nanotube and at least one charged molecule, the bond between the carbon nanotube and the charged molecule being essentially electrostatic, and the charged molecule comprising at least one negative charge if the carbon nanotube comprises positive charges and/or at least one positive charge if the carbon nanotube comprises negative charges.Type: GrantFiled: June 6, 2005Date of Patent: December 28, 2010Assignees: Centre National de la Recherche Scientifique (C.N.R.S.), University of London, The School of Pharmacy, Universita degli Studi di TriesteInventors: Alberto Bianco, Davide Pantarotto, Kostas Kostarelos, Maurizio Prato
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Patent number: 7854862Abstract: Facile ways towards the integration of the regioregular poly(3-alkylthiophene)s onto carbon nanotubes, providing multifunctional materials that combine the extraordinary properties of the carbon nanotubes with those of regioregular poly(3-alkylthiophene)s, are presented.Type: GrantFiled: August 13, 2008Date of Patent: December 21, 2010Assignee: Advent TechnologiesInventors: Christos Chochos, Joannis Kallitsis
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Patent number: 7854914Abstract: The present invention relates to a method of solubilizing carbon nanotubes, to carbon nanotubes produced thereby and to uses of said carbon nanotubes.Type: GrantFiled: March 13, 2009Date of Patent: December 21, 2010Assignee: Sony Deutschland GmbHInventors: William E. Ford, Jurina Wessels, Akio Yasuda
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Patent number: 7850874Abstract: Methods and devices are provided relating to the homogeneous deposition of a composite film of carbon nanotubes by electrophoresis. The methods comprise linking carbon nanotubes to matrix particles prior to electrophoretic deposition. The methods improve the adhesion of the composite film to the substrate and reduce the surface roughness. Carbon nanotube films and electron field emission cathodes fabricated by this process demonstrate enhanced electron field emission characteristics.Type: GrantFiled: September 20, 2007Date of Patent: December 14, 2010Assignee: Xintek, Inc.Inventors: Mei Lu, Jie Liu, Huaizhi Geng, Bo Gao
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Publication number: 20100286395Abstract: There is provided a method and nanocomposite for the reversible assembly of nanotubes, such as oxidized single wall carbon nanotubes, based on metal coordination. The method produces a thermally stable, neutral nanocomposite possessing enhanced mechanical, electrical, physical and chemical properties for example. Disassembly can be provided by treatment with a competing ligand compound.Type: ApplicationFiled: April 7, 2006Publication date: November 11, 2010Applicant: THE UNIVERSITY OF AKRONInventors: George R. Newkome, Charles N. Moorefield, Pingshan Wang, Sinan Li
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Publication number: 20100283008Abstract: Compositions comprising at least one type of carbon nanotube, at least one surfactant, and at least one polymer are disclosed. The compositions provide stable fluorescence over a wide range of pH in various embodiments. In some embodiments, the compositions are biocompatible. Methods for preparing the compositions from at least one pre-formed polymer are disclosed. Methods for preparing the compositions from at least one monomer are disclosed. Heating methods utilizing the compositions are disclosed.Type: ApplicationFiled: September 24, 2008Publication date: November 11, 2010Applicant: WILLIAM MARSH RICE UNIVERSITYInventors: Juan G. Duque, Matteo Pasquali, Howard K. Schmidt, Laurent Cogent, A. Nicholas G. Parra-Vasquez
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Patent number: 7829056Abstract: Disclosed herein is a method of forming a guanidine group on carbon nanotubes to improve the dispersibility of carbon nanotubes, a method of attaching carbon nanotubes having guanidine groups to a substrate, and carbon nanotubes and a substrate manufactured by the above methods. The method of forming the guanidine group on the carbon nanotubes includes forming a carboxyl group on the carbon nanotubes, and forming the guanidine group on the carboxyl group of the carbon nanotubes. In addition, the method of attaching the carbon nanotubes having guanidine groups to the substrate includes coating a substrate with a polymer having crown ether attached thereto, drying the polymer layer having crown ether attached thereto formed on the substrate to be semi-dried, and coating the semi-dried polymer layer with a solution including carbon nanotubes having guanidine groups dispersed therein.Type: GrantFiled: July 6, 2007Date of Patent: November 9, 2010Assignee: Samsung Electro-Mechanics Co., Ltd.Inventor: Hai Sung Lee
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Publication number: 20100256290Abstract: Embodiments of the present disclosure illustrate systems and methods for the separation of carbon nanotubes (CNTs) in solution. In certain embodiments, the CNTs are isolated by sonication and chemical modification of the CNTs using functionalization reactions, including thermo-initiated free radical polymerization and esterification. Beneficially, sonication facilitates mechanical separation of the CNTs, while the chemical modification of the CNTs results in more favorable interactions between the CNTs and their surrounding media which enables the separated CNTs to remain isolated. Embodiments of the isolated CNTs may also be employed into coating systems.Type: ApplicationFiled: March 30, 2010Publication date: October 7, 2010Inventors: Phillip J. Costanzo, Keith Vorst, Greg Curtzwiler
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Publication number: 20100249447Abstract: Purification methods for fullerene derivatives are described. The method comprises passing a solution of fullerene derivatives containing impurities such as other fullerene derivatives and polycyclic aromatic hydrocarbons through activated charcoals. Fullerene derivatives with high purity were obtained.Type: ApplicationFiled: March 17, 2010Publication date: September 30, 2010Applicant: Nano-C, Inc.Inventors: Thomas A. Lada, Angela Herring, Jennifer Cookson
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Publication number: 20100240922Abstract: The invention provides a method of functionalizing the sidewalls of a plurality of carbon nanotubes with oxygen moieties, the method comprising: exposing a carbon nanotube dispersion to an ozone/oxygen mixture to form a plurality of ozonized carbon nanotubes; and contacting the plurality of ozonized carbon nanotubes with a cleaving agent to form a plurality of sidewall-functionalized carbon nanotubes.Type: ApplicationFiled: June 27, 2006Publication date: September 23, 2010Inventors: Stanislaus S. Wong, Sarbajit Banerjee
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Publication number: 20100234503Abstract: A polymer composite includes a polymer matrix and an alkyl-substituted carbon nanotube. A polymer composite also includes a polymer matrix and a fluorinated carbon nanotube reacted with urea, thiourea, or guanidine. A method of functionalizing a carbon nanotube includes heating a fluorinated carbon nanotube urea, thiourea, or guanidine. A substituted carbon nanotube includes a fluorinated carbon nanotube and amino silane compounds The amino silane compounds covalently link to the fluorinated nanotube through the amino functional group. Polymer composites, ceramics and surface coating materials may be constructed from these substituted carbon nanotubes.Type: ApplicationFiled: August 10, 2007Publication date: September 16, 2010Inventors: Valery N. Khabashesku, Merlyn X. Pulikkathara
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Patent number: 7754107Abstract: A carbon nanotube is described, to which quantum dots are attached through non-covalent bonding via linking molecules bonded to the quantum dots. A method of visualizing a carbon nanotube is also described, wherein quantum dots are attached to the carbon nanotube through non-covalent bonding via linking molecules bonded to the quantum dots, and then the quantum dots are made emit light. This invention allows carbon nanotubes, even those in a wet condition, to be visualized by a simple fluorescent optical microscope. Thereby, the difficulties on preparing specimens and the need of sophisticated instruments can be reduced. This invention also exhibits great potential for the application of carbon nanotubes under a wet condition.Type: GrantFiled: January 16, 2008Date of Patent: July 13, 2010Assignee: National Tsing Hua UniversityInventors: Ning-Yu Wu, Yi-Yang Chen, Tri-Rung Yew
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Publication number: 20100170800Abstract: A composite material comprising a metal layer, a plurality of carbon nanotubes in the metal layer, and a plurality of nucleic acids in the metal layer. Also disclosed is a method of manufacturing the composite material and an electronic device including the composite material.Type: ApplicationFiled: September 18, 2009Publication date: July 8, 2010Applicant: SAMSUNG ELECTRONICS CO., LTDInventors: Yoon-chul SON, Yong-chul KIM, In-taek HAN
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Publication number: 20100159219Abstract: Disclosed herein are methods of making a negative pattern of carbon nanotubes or a polymerized carbon nanotube composite having an interpenetrating polymer network (IPN) by modifying the surfaces of the carbon nanotubes with polymerizable functional groups such as oxirane and anhydride groups and subjecting the surface-modified carbon nanotubes either to a photolithography process or to a heatcuring process. By virtue of the present invention, desired patterns of carbon nanotubes can be easily made on the surfaces of various substrates, and polymerized carbon nanotube composites improved in hardening properties can be made without additional polymers.Type: ApplicationFiled: October 9, 2009Publication date: June 24, 2010Inventors: Jong Jin Park, Jung Han Shin, Sang Yoon Lee
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Publication number: 20100145034Abstract: The present invention provides a method for selectively placing carbon nanotubes on a substrate surface by using functionalized carbon nanotubes having an organic compound that is covalently bonded to such carbon nanotubes. The organic compound comprises at least two functional groups, the first of which is capable of forming covalent bonds with carbon nanotubes, and the second of which is capable of selectively bonding metal oxides. Such functionalized carbon nanotubes are contacted with a substrate surface that has at least one portion containing a metal oxide. The second functional group of the organic compound selectively bonds to the metal oxide, so as to selectively place the functionalized carbon nanotubes on the at least one portion of the substrate surface that comprises the metal oxide.Type: ApplicationFiled: August 14, 2009Publication date: June 10, 2010Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Alina Afzali-Ardakani, Phaedon Avouris, James B. Hannon, Christian Klinke
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Patent number: 7710649Abstract: An optical polarizer includes a supporting member and a polarizing film supported by the supporting member. The polarizing film includes at least one layer of a carbon nanotube film, and the carbon nanotubes in a given carbon nanotube film are aligned in the same direction therein. A method for fabricating the optical polarizer includes the steps of: (a) providing a supporting member; (b) providing at least one layer of a carbon nanotube film, the carbon nanotubes in a given carbon nanotube film aligned along the same direction; and (c) adhering a given carbon nanotube film to the supporting member to form the optical polarizer.Type: GrantFiled: December 14, 2007Date of Patent: May 4, 2010Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Chen Feng, Kai-Li Jiang, Liang Liu, Xiao-Bo Zhang, Shou-Shan Fan
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Patent number: 7709243Abstract: The present invention is related to a biochip and a biomolecular detection system using the same. In particular, the biomolecular detection system is capable of detecting biological molecules (biomolecules) such as DNA or protein at a high speed. The biochip comprises a supporting structure, conductive materials aligned vertically on, and associated with, the supporting structure, and biomolecule probes operably linked to the conductive materials. The biomolecular detection system using the biochip may precisely detect biomolecules as well as the density of the biomolecules.Type: GrantFiled: February 14, 2005Date of Patent: May 4, 2010Assignee: Samsung SDI Co., Ltd.Inventors: Young-jun Park, Jong-min Kim, Sung-kee Kang, Jung-woo Kim
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Publication number: 20100090171Abstract: The present inventive concept relates to a high conductive paste composite which can minimally undergo effects of a negative temperature resistance coefficient (e.g., heat radiation effect 5 to 10 times larger than that of copper or aluminum, high field emission effect, black body radiation, etc.) that the carbon nano tube has in the case of products using the carbon nano tube (MWNT or SWNT), which can solve problems (negative temperature resistance coefficient and high resistance) of a heating part (conductive carbon paste) that converts electric energy of a heating body into thermal energy.Type: ApplicationFiled: October 8, 2009Publication date: April 15, 2010Applicant: EXAENC. CORP.Inventors: Taek Soo LEE, Seung Kyung KANG, Chul Ki KIM
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Publication number: 20100087614Abstract: Compounds are attached to carbon nanotubes (CNT) by a process which comprises: subjecting surface treated CNTs which have been treated to induce negatively charged surface groups thereon, to nucleophilic substitution reaction with a compound carrying a functional group capable of reacting with the negatively charged groups on the CNT surface, whereby the compound chemically bonds to the CNT. The surface CNT treatment may be reduction. The compounds which are bonded to the CNT may be epoxy resins, bonded directly or through a spacer group. Bi-functional CNTs, grafted to both epoxy resins and other polymers such as polystyrene, are also made by this process.Type: ApplicationFiled: February 28, 2008Publication date: April 8, 2010Applicant: NATIONAL RESEARCH COUNCIL OF CANADAInventors: Benoit Simard, Jingwen Guan
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Patent number: 7691358Abstract: A water solubilizer for nanocarbons contains a surfactant which can form a spherical micelle vesicle having a diameter of 50-2,000 nm in a water solution or a water-soluble polymer having a weight-average molecular weight of 10,000-50,000,000 as an active constituent. For example, the water solubilizer is used for purification of nanocarbons.Type: GrantFiled: December 2, 2003Date of Patent: April 6, 2010Assignee: National University Corporation Hokkaido UniversityInventor: Bunshi Fuugetsu
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Patent number: 7670831Abstract: Conductive carbon nanotubes (CNTs) obtained by dotting carboxylated CNTs with metal nanocrystals by chemical functional groups, are described, as well as a method for fabricating a pattern or film of the conductive CNTs which involves repeatedly depositing conductive CNTs on a substrate to achieve high surface density. A biosensor is described, in which bioreceptors that bind to target biomolecules are selectively attached to conductive CNTs or a conductive CNT pattern or film. By use of the conductive biosensor, various target biomaterials that bind or react with the bioreceptors can be precisely measured directly or by electrochemical signals at large amounts in one step. Additionally, the biosensor can be used for an electrical detection method capable of providing precise measurement results even with a small amount of source material.Type: GrantFiled: June 3, 2004Date of Patent: March 2, 2010Assignee: Korea Advanced Institute of Science and TechnologyInventors: Sang Yup Lee, Hee Tae Jung, Dae Hwan Jung, Young Koan Ko, Do Hyun Kim, Seok Jae Lee, Byung Hun Kim, Jae Shin Lee
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Patent number: 7666382Abstract: Certain applicator liquids and method of making the applicator liquids are described. The applicator liquids can be used to form nanotube films or fabrics of controlled properties. An applicator liquid for preparation of a nanotube film or fabric includes a controlled concentration of nanotubes dispersed in a liquid medium containing water. The controlled concentration is sufficient to form a nanotube fabric or film of preselected density and uniformity.Type: GrantFiled: December 15, 2005Date of Patent: February 23, 2010Assignee: Nantero, Inc.Inventors: Eliodor G. Ghenciu, Tzong-Ru Terry Han, Ramesh Sivarajan, Thomas Rueckes, Rahul Sen, Brent M. Segal, Jonathan W. Ward
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Patent number: 7645400Abstract: The object of the present invention is to provide a carbon nanotube composition that does not impair the characteristics of the carbon nanotubes itself, allows the carbon nanotubes to be dispersed or solubilized in a solvent, does not cause separation or aggregation of the carbon nanotubes even during long-term storage, has superior electrical conductivity, film formability and moldability, can be easily coated or covered onto a base material, and the resulting coated film has superior moisture resistance, weather resistance and hardness; a composite having a coated film composed thereof; and, their production methods.Type: GrantFiled: October 31, 2003Date of Patent: January 12, 2010Assignee: Mitsubishi Rayon Co., Ltd.Inventor: Takashi Saitoh
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Patent number: 7641863Abstract: A nanoengineered membrane for controlling material transport (e.g., molecular transport) is disclosed. The membrane includes a substrate, a cover defining a material transport channel between the substrate and the cover, and a plurality of fibers positioned in the channel and connected to and extending away from a surface of the substrate. The fibers are aligned perpendicular to the surface of the substrate, and have a width of 100 nanometers or less. The diffusion limits for material transport are controlled by the separation of the fibers. In one embodiment, chemical derivatization of carbon fibers may be undertaken to further affect the diffusion limits or affect selective permeability or facilitated transport. For example, a coating can be applied to at least a portion of the fibers. In another embodiment, individually addressable carbon nanofibers can be integrated with the membrane to provide an electrical driving force for material transport.Type: GrantFiled: March 6, 2003Date of Patent: January 5, 2010Assignee: UT-Battelle LLCInventors: Mitchel J. Doktycz, Michael L. Simpson, Timothy E. McKnight, Anatoli V. Melechko, Douglas H. Lowndes, Michael A. Guillorn, Vladimir I. Merkulov
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Publication number: 20090301349Abstract: The present invention provides a method for selectively placing carbon nanotubes on a substrate surface by using functionalized carbon nanotubes having an organic compound that is covalently bonded to such carbon nanotubes. The organic compound comprises at least two functional groups, the first of which is capable of forming covalent bonds with carbon nanotubes, and the second of which is capable of selectively bonding metal oxides. Such functionalized carbon nanotubes are contacted with a substrate surface that has at least one portion containing a metal oxide. The second functional group of the organic compound selectively bonds to the metal oxide, so as to selectively place the functionalized carbon nanotubes on the at least one portion of the substrate surface that comprises the metal oxide.Type: ApplicationFiled: August 14, 2009Publication date: December 10, 2009Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Ali Afzali-Ardakani, Phaedon Avouris, James B. Hannon, Christian Klinke
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Publication number: 20090301896Abstract: Methods for the chemical modification of carbon nanotubes involve the derivatization of multi- and single-wall carbon nanotubes, including small diameter (ca. 0.7 nm) single-wall carbon nanotubes, with diazonium species. The method allows the chemical attachment of a variety of organic compounds to the side and ends of carbon nanotubes. These chemically modified nanotubes have applications in polymer composite materials, molecular electronic applications, and sensor devices. The methods of derivatization include electrochemical induced reactions, thermally induced reactions, and photochemically induced reactions. Moreover, when modified with suitable chemical groups, the derivatized nanotubes are chemically compatible with a polymer matrix, allowing transfer of the properties of the nanotubes (such as, mechanical strength or electrical conductivity) to the properties of the composite material as a whole.Type: ApplicationFiled: August 17, 2007Publication date: December 10, 2009Applicant: William Marsh Rice UniversityInventors: James M. Tour, Jeffrey L. Bahr, Jiping Yang
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Publication number: 20090306427Abstract: The invention relates to a process for chemically functionalizing carbon nanotubes. The process comprises dispersing carbon nanotube salts in a solvent; and chemically functionalizing the carbon nanotube salts to provide chemically functionalized carbon nanotubes.Type: ApplicationFiled: February 26, 2007Publication date: December 10, 2009Inventors: Yadienka Martinez-Rubi, Jingwen Guan, Benoit Simard
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Patent number: 7625702Abstract: A structure and method for forming single-stranded DNA segments/single-wall carbon nanotube complexes and a method of preparing single-stranded DNA segments. The method for forming single-stranded DNA segments/single-wall carbon nanotube complexes including: attaching single-stranded DNA segments to single-wall carbon nanotubes to form single-stranded DNA segment/single-wall carbon nanotube complexes, each of the single-stranded DNA segments having a same length of greater than 2,000 bases.Type: GrantFiled: December 20, 2005Date of Patent: December 1, 2009Assignee: International Business Machines CorporationInventor: Jennifer Nam Cha
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Publication number: 20090280593Abstract: A method can be adapted for design and preparation of a matrix nanocomposite sensing film for hydrogen sulphide SAW/BAW detection at room temperature. A matrix nanocomposite can be synthesized by incorporating both single-wall and multi-wall thiolated carbon nanotubes into conductive organic polymers or ceramic nanocrystalline in a properly functionalized manner. A thin organic sensing film can be prepared based on the matrix nanocomposite. The matrix nanocomposite sensing film can be prepared on a surface of a SAW/BAW device by an additive process or a direct printing process. Finally, the sensing film can be consolidated by thermal annealing or laser annealing under ambient conditions in order to obtain the stable sensing film with higher sensitivity and electrical properties for a SAW/BAW based H2S sensor.Type: ApplicationFiled: May 7, 2008Publication date: November 12, 2009Inventors: Bogdan-Catalin Serban, Stefan I. Voicu, Stefan-Dan Costea, Cornel P. Cobianu
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Patent number: 7611628Abstract: A method is provided for producing a permeable membrane, comprising the steps of aligning a plurality of hollow nanotubules to form a mat, coating the mat with a continuous polymer matrix to form a membrane. The membrane is etched (a) to open the plurality of hollow nanotubules and form pores and (b) to oxidize the carboxyl groups to carboxylate groups. At least one additional functional unit having at least one available amine group to bind the at least one additional functional unit to the nanotubule end carboxylate group may be provided. Membranes fabricated in accordance with the method of the invention are provided also.Type: GrantFiled: May 13, 2005Date of Patent: November 3, 2009Assignee: University of Kentucky Research FoundationInventor: Bruce J. Hinds, III
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Patent number: 7611906Abstract: Carbon nanotubes are grown on a first substrate. The CNTs grown on the first substrate are immersed in a biological solution at a predetermined depth to functionalize ends of the CNTs with a biological molecule. The functionalized CNTs are harvested from the first substrate. A second substrate is functionalized with a complementary biological modification, which is a complementary binding partner to the biological molecule functionalized to the ends of the CNTs. The functionalized CNTs are attached to the second substrate by way of the complementary binding partner.Type: GrantFiled: January 22, 2007Date of Patent: November 3, 2009Assignee: Applied Nanotech Holdings, Inc.Inventor: Zvi Yaniv
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Patent number: 7601421Abstract: The present invention is directed to methods of integrating carbon nanotubes into epoxy polymer composites via chemical functionalization of carbon nanotubes, and to the carbon nanotube-epoxy polymer composites produced by such methods. Integration is enhanced through improved dispersion and/or covalent bonding with the epoxy matrix during the curing process. In general, such methods involve the attachment of chemical moieties (i.e., functional groups) to the sidewall and/or end-cap of carbon nanotubes such that the chemical moieties react with either the epoxy precursor(s) or the curing agent(s) (or both) during the curing process. Additionally, in some embodiments, these or additional chemical moieties can function to facilitate dispersion of the carbon nanotubes by decreasing the van der Waals attractive forces between the nanotubes.Type: GrantFiled: June 16, 2004Date of Patent: October 13, 2009Assignee: William Marsh Rice UniversityInventors: Valery N. Khabashesku, Jiang Zhu, Haiqing Peng, Enrique V. Barrera, John L. Margrave, Mary Lou Margrave, legal representative
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Publication number: 20090166592Abstract: The present invention provides a structure composed substantially only of carbon nanotubes each having a functional group, the structure being obtained by using a liquid mix characterized by including: the carbon nanotubes; and a crosslinking agent capable of prompting a crosslinking reaction with the functional group. The structure has a network structure in which the carbon nanotubes are surely connected to each other. The present invention also provides a method of forming the structure.Type: ApplicationFiled: September 24, 2008Publication date: July 2, 2009Applicant: FUJI XEROX CO., LTD.Inventors: Chikara Manabe, Kentaro Kishi, Taishi Shigematsu, Hisae Yoshizawa, Miho Watanabe, Kei Shimotani, Hiroyuki Watanabe, Masaaki Shimizu
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Publication number: 20090170768Abstract: Compositions comprising a plurality of functionalized carbon nanotubes and at least one type of payload molecule are provided herein. The compositions are soluble in water and PBS in some embodiments. In certain embodiments, the payload molecules are insoluble in water. Methods are described for making the compositions and administering the compositions. An extended release formulation for paclitaxel utilizing functionalized carbon nanotubes is also described.Type: ApplicationFiled: October 3, 2008Publication date: July 2, 2009Applicant: William Marsh Rice UniversityInventors: James M. Tour, Valerie C. Moore, S. Ward Casscella, Jeffrey N. Myers, Zvonimir L. Milas, Kathy A. Mason, Luka Milas, Brandl Katherine Price, Jared L. Hudson, Jodie L. Conyers, JR., Rebecca L. Lucente-Schultz, Ashley Leonard, Dmitry V. Kosynkin
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Publication number: 20090169594Abstract: A biocompatible and biodegradable carbon nanotube-based fiber capable of stimulating and sustaining cell proliferation and stimulating and sustaining nerve regeneration is disclosed herein. The biocompatible and biodegradable carbon nanotube-based fiber comprising at least one carbon nanotube; a biodegradable copolymer; and a coagulating polymer. The present disclosure also relates to a process fro producing such a fiber.Type: ApplicationFiled: September 18, 2008Publication date: July 2, 2009Inventors: Stefania Polizu, Philippe Poulin, Oumarou Savadogo, L'Hocine Yahia
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Publication number: 20090124747Abstract: The present disclosure describes carbon nanotube materials and condensation polymers having at least one bridge between carbon nanotubes. Carbon nanotube materials comprise a plurality of functionalized single-wall carbon nanotubes linked to at least one other single-wall carbon nanotube by at least one bridge. The at least one bridge comprises at least one amine functionality bonded to the functionalized single-wall carbon nanotubes. The amine functionality may be alkyl or aryl. Carbon nanotube condensation polymers having at least one bridge between single-wall carbon nanotubes are also disclosed. The bridges in the condensation polymers comprise an amine functionality and a condensation agent.Type: ApplicationFiled: October 14, 2008Publication date: May 14, 2009Applicant: William Marsh Rice UniversityInventor: Valery N. Khabashesku
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Patent number: 7531157Abstract: A method of solubilizing carbon nanotubes. Carbon nanotubes, and urea are mixed together and then heated.Type: GrantFiled: September 23, 2003Date of Patent: May 12, 2009Assignee: Sony Deutschland GmbHInventors: William E. Ford, Jurina Wessels, Akio Yasuda
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Publication number: 20090098550Abstract: The present invention provides an MRI contrast agent, comprising: MRI contrast agent particles, and oligonucleotides, attached to the particles.Type: ApplicationFiled: July 29, 2008Publication date: April 16, 2009Inventors: Yi Lu, Mehmet Veysel Yigit, Debapriya Mazumdar
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Publication number: 20090081487Abstract: New multifunctional aromatic copolymers bearing pyridine or pyrimidine units either in the main chain or side chain and single wall carbon nanotubes or multi wall carbon nanotubes as side chain pendants have been prepared. These multifunctional materials will combine both high proton and electrical conductivity due to the existence of polar pyridine or pyrimidine groups and carbon nanotubes within the same chemical structure. The prepared multifunctional materials can be used in the catalyst ink of the electrodes in high temperature PEM fuel cells.Type: ApplicationFiled: June 25, 2008Publication date: March 26, 2009Inventors: Christos Chochos, Nora Gourdoupi, Nikolas Triantafyllopoulos, Joannis Kallitsis
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Publication number: 20090042136Abstract: The present invention is directed toward methods of attaching or grafting carbon nanotubes (CNTs) to silicon or other surfaces, wherein such attaching or grafting occurs via functional groups on either or both of the CNTs and silicon surface. The present invention is also directed to the novel compositions produced by such methods. Previous work by Applicants has demonstrated covalent attachment of arenes via aryldiazonium salts to Si (hydride passivated single crystal or poly Si; <111> or <100>, p-doped, n-doped or intrinsic), GaAs, and Pd surfaces. In the case of Si, this provides a direct arene-Si bond with no intervening oxide. Applicants have also reported on the use of aryldiazonium salts for the direct covalent linkage of arenes to single wall carbon nanotubes (SWNTs) where the nanotubes can exist either as bundles or individual structures (when surfactant-wrapped).Type: ApplicationFiled: May 6, 2005Publication date: February 12, 2009Inventors: James M. Tour, Bo Chen, Austen K. Flatt, Michael Stewart, Christopher A. Dyke, Francisco Maya
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Publication number: 20080318245Abstract: Nanotubes and nanotube array structures comprise (a) a nanotube having an inner wall portion; and (b) a bilayer coating formed on the inner wall portions, with the bilayer coating comprised of surfactants. A secondary compound such as a protein, peptide or nucleic acid may be associated with the bilayer coating. The structures are useful for, among other things, affinity purification, catalysis, and as biochips.Type: ApplicationFiled: June 10, 2004Publication date: December 25, 2008Inventor: Alex I. Smirnov
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Patent number: 7465605Abstract: An embodiment of the present invention is a technique to functionalize carbon nanotubes in situ. A carbon nanotube (NT) array is grown or deposited on a substrate. The NT array is functionalized in situ with a polymer by partial thermal degradation of the polymer to form a NT structure. The functionalization of the NT structure is characterized. The functionalized NT structure is processed according to the characterized functionalization.Type: GrantFiled: December 14, 2005Date of Patent: December 16, 2008Assignee: Intel CorporationInventors: Nachiket R. Raravikar, James C. Matayabas, Jr.
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Publication number: 20080299374Abstract: Disclosed is a method of manufacturing a transparent electrode having a carbon nanotube. The carbon nanotube powder is dispersed in a solvent to form a carbon nanotube ink. The carbon nanotube ink is coated on a substrate to prepare a carbon nanotube film. The carbon nanotube has a defect formed on a surface thereof. The defect is formed through an acid treatment process of immersing the carbon nanotube powder or the carbon nanotube film in a nitric acid, a sulfuric acid, a hydrochloric acid, a phosphoric acid, or a mixture thereof. The defect can be formed through an ultrasonic treatment process of exposing the carbon nanotube powder or the carbon nanotube film to an ultrasonic wave having a predetermined frequency and intensity.Type: ApplicationFiled: March 10, 2008Publication date: December 4, 2008Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jae-young CHOI, Seong-jae CHOI, Hyeon-jin SHIN, Seon-mi YOON, Ki-kang KIM, Young-hee LEE
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Publication number: 20080296538Abstract: A carbon nanotube is described, to which quantum dots are attached through non-covalent bonding via linking molecules bonded to the quantum dots. A method of visualizing a carbon nanotube is also described, wherein quantum dots are attached to the carbon nanotube through non-covalent bonding via linking molecules bonded to the quantum dots, and then the quantum dots are made emit light. This invention allows carbon nanotubes, even those in a wet condition, to be visualized by a simple fluorescent optical microscope. Thereby, the difficulties on preparing specimens and the need of sophisticated instruments can be reduced. This invention also exhibits great potential for the application of carbon nanotubes under a wet condition.Type: ApplicationFiled: January 16, 2008Publication date: December 4, 2008Inventors: Ning-Yu Wu, Yi-Yang Chen, Tri-Rung Yew
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Patent number: 7439562Abstract: The present invention concerns a method for modyfing at least an electronic property of a carbon nanotube or nanowire comprising exposing said nanotube or nanowire to an acid having the formula (I) wherein R1, R2 and R3 are chosen in the group comprising (H, F, Cl, Br, I) with at least one of R1, R2 and R3 being different from H. At least part of the nanotube or nanowire may be a channel region of a field effect transistor.Type: GrantFiled: April 22, 2003Date of Patent: October 21, 2008Assignee: Commissariat a l'Energie AtomiqueInventors: Stéphane Auvray, Jean-Philippe Bourgoin, Vincent Derycke, Marcelo Goffman
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Patent number: 7429371Abstract: Carbon nanotubes have been reversibly and readily oxidized and reduced with common chemicals in solution, thereby allowing the nanotubes to be used as catalysts for chemical reactions and as stable charge storage devices.Type: GrantFiled: March 1, 2005Date of Patent: September 30, 2008Assignee: E. I. du Pont de Nemours and CompanyInventors: Bruce A. Diner, Ming Zheng
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Publication number: 20080227168Abstract: The present invention includes compositions and methods to deliver carbon nanostructures that include agents for delivery to cells, wherein the carbon nanostructure and the agent are made soluble by coating the carbon nanostructure with one or more polymers, e.g., low band gap conductive polymers.Type: ApplicationFiled: February 16, 2008Publication date: September 18, 2008Applicants: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM, MEDICAL NANOTECHNOLOGIES, INC.Inventors: Tanja Kmecko, Gareth Hughes, Rockford K Draper, Robert M. Burgess, Austin David-Edmiston Swafford