Abstract: The present invention generally provides compositions including carbon-containing molecules, and related methods. In some cases, the present invention relates to aromatic molecules comprising functional groups bonded to the aromatic portion of the molecule, including nonplanar portions of the molecules. Methods of the invention may provide the ability to introduce a wide range of functional groups to carbon-containing molecules. In some cases, methods of the invention may be performed using relatively mild reaction conditions, such as relatively low temperature, low pressure, and/or in the absence of strong acids or strong bases. The present invention may provide a facile and modular approach to synthesizing molecules that may be useful in various applications including photovoltaic devices, sensors, and electrodes (e.g., for electrocatalysis).
Abstract: Functionalized Single Wall Carbon Nanotube (SWCNT) complexed with nanochitosan for use in the delivery of bioaffecting substances and diagnostic applications. fSWCNT complexed with the chitosan NG042 were used for delivery of DNA-encoding EGFP reporter protein and peptide. The results demonstrate that shown CNT-chitosan hybrid nanoparticles exhibit significantly higher transfection efficiency in vivo than chitosan alone. Furthermore, the functionalized nanotubes were tested for peptide transfer into HEK293 cells. The results showed that the hybrid nanoparticles efficiently transferred peptides. Together, these results show that hybrid SWCNT-chitosan particles increase DNA and peptide transfer into cells.
Abstract: Nanotubes and nanotube-based devices are implemented in a variety of applications. According to an example embodiment of the present invention, a nanotube is adapted to pass current between two conductive elements. In one implementation, each conductive element includes a catalyst material, wherein electrical connection is made to opposite ends of the nanotube at each of the catalyst portions. In one implementation, the electrical connection is used to detect an electrical characteristic of the nanotube, such as the response of the nanotube to exposure to one or more of a variety of materials. In another implementation, the nanotube is used for chemical and biological sensing. In still another implementation, a particular functionality is imparted to the nanotube using one or more of a variety of materials coupled to the nanotube, such as metal particles, biological particles and/or layers of the same.
Type:
Grant
Filed:
June 18, 2002
Date of Patent:
August 26, 2008
Assignee:
The Board of Trustees of the Leland Stanford Junior University
Abstract: The present invention relates to polymer composite materials containing carbon nanotubes, particularly to those containing singled-walled nanotubes. The invention provides a polymer composite comprising one or more base polymers, one or more functionalized m-phenylenevinylene-2,5-disubstituted-p-phenylenevinylene polymers and carbon nanotubes. The invention also relates to functionalized m-phenylenevinylene-2,5-disubstituted-p-phenylenevinylene polymers, particularly to m-phenylenevinylene-2,5-disubstituted-p-phenylenevinylene polymers having side chain functionalization, and more particularly to m-phenylenevinylene-2,5-disubstituted-p-phenylenevinylene polymers having olefin side chains and alkyl epoxy side chains. The invention further relates to methods of making polymer composites comprising carbon nanotubes.
Abstract: The invention is directed to carbon nanotube-containing compositions that have increased viscosity and stability. In particular, the invention is directed to methods for manufacturing carbon nanotube films and layers that provide superior electrical properties.
Type:
Application
Filed:
April 7, 2005
Publication date:
June 12, 2008
Inventors:
Paul J. Glatkowski, Joseph W. Piche, C. Michael Trottier, Philip Wallis, David J. Arthur, Jiazhong Luo
Abstract: A method for preparing organic nanotubules in an aqueous medium including preparing a basic solution with a pH from 10 to 14, adding an organic compound of the formula: wherein R1 is a C17-C20 polycyclic radical with fused rings optionally including alkyl substituents, R2 is a C3-C20 linear or branched alkylene group, and R3 represents a hydrogen atom, a C1-C20 alkyl or C6-C30 aromatic group, and submitting the solution to stirring for sufficient time in order to form stable tubules of the organic compound in the solution; and nanotubules prepared by the method.
Type:
Grant
Filed:
June 21, 2002
Date of Patent:
June 3, 2008
Assignees:
Commissariat a l'Energie Atomique, Centre National de la Recherche Scientifique
Abstract: A high quality single-crystalline polyalkylthiophene structure can be easily prepared by the inventive method which comprises: (i) dissolving polyalkylthiophene in an organic solvent at a temperature ranging from 50 to 100° C., sequentially quenching the polyalkylthiophene solution at a temperature ranging from 25 to 40° C. and then at ?5 to 15° C., to obtain a self-seeding polyalkylthiophene solution; and (ii) applying the self-seeding polyalkylthiophene solution obtained in step (i) to one surface of a nano-template having a hydrophobic supramolecule coating layer formed thereon to induce self-assembly and crystallization of polyalkylthiophene on the surface.
Abstract: A composition is provided in which carbon nanofibers are functionalized with at least one moiety where the moiety or moieties comprise at least one bivalent radical. The composition can include a nanocomposite, such as polyimide films. Methods for making functionalized carbon nanofibers and nanocomposites are also provided.
Type:
Application
Filed:
July 27, 2006
Publication date:
January 31, 2008
Applicant:
University of Dayton
Inventors:
David H. Wang, Michael J. Arlen, Loon-Seng Tan, Richard A. Vaia
Abstract: The present invention relates to new compositions of matter and articles of manufacture comprising SWNTs as nanometer scale conducting rods dispersed in an electrically-insulating matrix. These compositions of matter have novel and useful electrical, mechanical, and chemical properties including applications in antennas, electromagnetic and electro-optic devices, and high-toughness materials. Other compositions of matter and articles of manufacture are disclosed. including polymer-coated and polymer wrapped single-wall nanotubes (SWNTs), small ropes of polymer-coated and polymer-wrapped SWNTs and materials comprising same. This composition provides one embodiment of the SWNT conducting-rod composite mentioned above, and also enables creation of high-concentration suspensions of SWNTs and compatibilization of SWNTs with polymeric matrices in composite materials.
Type:
Grant
Filed:
August 23, 2001
Date of Patent:
September 4, 2007
Assignee:
William Marsh Rice University
Inventors:
Richard E. Smalley, Daniel T. Colbert, Ken A. Smith, Michael O'Connell
Abstract: A technique of stably bonding a structure including a carbon nanotube with another structure is to be provided. Also, a nano-device that offers excellent performance and high production efficiency is to be provided. A polymer and a carbon nanotube are dispersed in a dispersion medium and on a filled liquid in a Langmuir trough, to obtain a carbon nanotube-based structure constituted of a carbon nanotube and the polymer wound around its rounded surface. The carbon nanotube-based structure is adhered to a substrate, and a ligand is immobilized on a side chain of the polymer. A receptor is immobilized on another carbon nanotube-based structure, and the both carbon nanotube-based structures are joined because of a specific interaction between the ligand and the receptor.
Abstract: A nanofeature particulate trap comprising a plurality of densely packed nanofeatures, such as nanotubes, and a particulate detector incorporating the nanofeature particulate trap are provided. A method of producing a nanotrap structure alone or integrated with a particulate detector is also provided.
Type:
Grant
Filed:
June 6, 2003
Date of Patent:
February 13, 2007
Assignee:
California Institute of Technology
Inventors:
Flavio Noca, Brian D. Hunt, Michael J. Bronikowski, Michael E. Hoenk, Robert S. Kowalczyk, Daniel S. Choi, Fei Chen
Abstract: The present invention relates to a method for preparing neodymium-carbon-nanotube and a process for preparing 1,4-cis-polybutadiene utilizing the same and more particularly, neodymium-carbon-nanotube. Neodymium is introduced by coordination with carboxylic acid, which is formed on the surface of carbon nanotube. In 1,3-butadiene polymerization with the neodymium-catalyst comprising the neodymium-carbon nanotube, a particular halogen compound, and a particular organometallic compound in an appropriate ratio, high 1,4-cis polybutadiene having molecular weight of 10,000 to 2,000,000 is produced, which exhibits excellent mechanical properties such as elasticity and durability.
Type:
Grant
Filed:
December 23, 2005
Date of Patent:
December 19, 2006
Assignee:
Korea Kumho Petrochemical Co., Ltd.
Inventors:
Gwanghoon Kwag, Pilsung Kim, Shin Han, Hyung Kyu Choi, Dong Hwan Kim, Seung Hwa Lee, Sung Hoon Han