Patents by Inventor James Tour

James Tour has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20060142466
    Abstract: 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.
    Type: Application
    Filed: June 21, 2004
    Publication date: June 29, 2006
    Inventors: James Tour, Jared Hudson, Ramanan Krishnamoorti, Koray Yurekli, Cynthia Mitchell
  • Publication number: 20050255030
    Abstract: The present invention provides methods by which carbon nanotubes can be functionalized under solvent-free conditions. As extremely large quantities are typically required to dissolve or disperse carbon nanotubes, solvent elimination the processes more favorable for scale-up. Such processes are also amenable to a wide variety of chemical reactions are functionalizing agents.
    Type: Application
    Filed: July 15, 2003
    Publication date: November 17, 2005
    Applicant: WILLIAM MARSH RICE UNIVERSITY
    Inventors: James Tour, Christopher Dyke
  • Publication number: 20050233158
    Abstract: An electrical interconnect device with contact(s) with improved resistance to oxidation, improved conductivity, and improved lubricity achieved by applying to the surface of the contact(s) a molecular coating chosen from the group consisting of monomers, oligomers, or polymers that are primarily organic in origin, capable of forming self-assembled monolayers or self-assembled multilayers, electrically conducting or non-conducting, and contain metal-binding ligands as pendant groups or as part of their backbone. Alternatively, the molecular contact coating may be a mat of chemically modified nanotubes.
    Type: Application
    Filed: July 26, 2002
    Publication date: October 20, 2005
    Inventors: James Tour, Shawn Dirk
  • Publication number: 20050207963
    Abstract: The invention incorporates new processes for the chemical modification of carbon nanotubes. Such processes 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 (via in-situ generation of diazonium compounds or pre-formed diazonium compounds), and photochemically induced reactions. The derivatization causes significant changes in the spectroscopic properties of the nanotubes. The estimated degree of functionality is ca. 1 out of every 20 to 30 carbons in a nanotube bearing a functionality moiety.
    Type: Application
    Filed: August 1, 2003
    Publication date: September 22, 2005
    Applicant: William Marsh Rice University
    Inventors: James Tour, Jeffrey Bahr, Jiping Yang
  • Publication number: 20050104062
    Abstract: A new class of electronic systems, wherein microelectronic semiconductor integrated circuit devices are integrated on a common substrate with molecular electronic devices.
    Type: Application
    Filed: August 18, 2003
    Publication date: May 19, 2005
    Inventors: Mark Reed, James Tour
  • Publication number: 20050101063
    Abstract: The present invention comprises three-terminal molecules devices that provide an electronic switching or modulation function in response to an electric field that is optimally directed normally to the length of the molecule or molecules which form the conductive path between tow electrodes. This invention also provides synthetic routes that can be implemented to realize these devices using top-down and bottom-up fabrication approaches that are compatible with ultra-high density integration onto substrates.
    Type: Application
    Filed: October 24, 2001
    Publication date: May 12, 2005
    Inventors: James Tour, Theresa Mayer
  • Publication number: 20050074390
    Abstract: The invention incorporates new processes for the chemical modification of carbon nanotubes. Such processes 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 (via in-situ generation of diazonium compounds or pre-formed diazonium compounds), and photochemically induced reactions. The derivatization causes significant changes in the spectroscopic properties of the nanotubes. The estimated degree of functionality is ca. 1 out of every 20 to 30 carbons in a nanotube bearing a functionality moiety.
    Type: Application
    Filed: August 1, 2003
    Publication date: April 7, 2005
    Applicant: William Marsh Rice University
    Inventors: James Tour, Jeffrey Bahr, Jiping Yang
  • Publication number: 20050074613
    Abstract: The invention incorporates new processes for the chemical modification of carbon nanotubes. Such processes 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 (via in-situ generation of diazonium compounds or pre-formed diazonium compounds), and photochemically induced reactions. The derivatization causes significant changes in the spectroscopic properties of the nanotubes. The estimated degree of functionality is ca. 1 out of every 20 to 30 carbons in a nanotube bearing a functionality moiety.
    Type: Application
    Filed: August 1, 2003
    Publication date: April 7, 2005
    Applicant: William Marsh Rice University
    Inventors: James Tour, Jeffrey Bahr, Jiping Yang