Patents by Inventor Jonathan S. Lindsey

Jonathan S. Lindsey 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).

  • Geometric synthesis of porphyrin rods
    Patent number: 7939656
    Abstract: A method of making a compound of Formula I? comprises reacting a compound of the formula DLCHO, with a compound of the formula to produce the compound of Formula I?. Methods of using the compounds are also described, particularly as intermediates for the synthesis of porphyrin rods, which porphyrin rods are in turn useful for (among other things) the production of molecular memory devices.
    Type: Grant
    Filed: August 13, 2010
    Date of Patent: May 10, 2011
    Assignee: North Carolina State University
    Inventors: Jonathan S. Lindsey, Lianhe Yu, Patchanita Thamyongkit, Anil D. Bhise
  • METHOD OF MAKING PORPHYRINS
    Publication number: 20110105746
    Abstract: A method of making a compound of Formula I: is carried out by condensing a pair of compounds of Formula II (which pair may be the same or different), or by condensing a compound of Formula III with a compound Formula IV, to produce a compound of Formula I. The condensing step may be carried out with a metal salt under basic conditions.
    Type: Application
    Filed: December 3, 2010
    Publication date: May 5, 2011
    Inventors: Dilek Dogutan Kiper, Marcin Ptaszek, Jonathan S. Lindsey
  • Route to formyl-porphyrins
    Patent number: 7919615
    Abstract: A method of making a 5-formylporphyrin, comprises the steps of: condensing a 5-acetaldipyrromethane with a dipyrromethane-1,9-dicarbinol to produce a porphyrin having an acetal group substituted thereon at the 5 position; and then hydrolyzing said porphyrin to produce said 5-formylporphyrin. Products and intermediates useful in such methods, along with methods of making such intermediates, are also described.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: April 5, 2011
    Assignee: North Carolina State University
    Inventors: Arumugham Balakumar, Kannan Muthukumaran, Jonathan S. Lindsey
  • Substituted benzazoloporphyrazines for polymerization and surface attachment and articles formed therefrom
    Patent number: 7919770
    Abstract: The present invention provides an article of manufacture formed from a substrate and a benzazoloporphyrazine bound to the substrate. The article may take a variety of different forms and may be for example an electrochromic display, a molecular capacitor, a battery, a solar cell, or a molecular memory device. Methods of making such articles, along with compounds, methods and intermediates useful for making such benzazoloporphyrazines, are also described.
    Type: Grant
    Filed: June 5, 2006
    Date of Patent: April 5, 2011
    Assignee: North Carolina State University
    Inventors: W. Justin Youngblood, Jonathan S. Lindsey
  • STEPWISE FABRICATION OF MOLECULAR-BASED, CROSS LINKED, LIGHT HARVESTING ARRAYS
    Publication number: 20110036476
    Abstract: A method of forming a crosslinked, non-discotic backbone polymer coating on a substrate, comprises the steps of: (a) coupling a layer of porphyrinic macrocycles to the substrate; (b) cross-linking the layer of porphyrinic macrocycles to form a layer of cross-linked porphyrinic macrocycles; and then (c) coupling a subsequent layer of porphyrinic macrocycles to the layer of cross-linked porphyrinic macrocycles of step (b) to form a non-discotic backbone polymer of porphyrinic macrocycles between the cross linked layer of step (b) and the subsequent layer of porphyrinic macrocycles to form a crosslinked, non-discotic backbone polymer coating thereon. Light harvesting arrays and solar cells that can be produced by such methods are also described.
    Type: Application
    Filed: October 29, 2010
    Publication date: February 17, 2011
    Inventor: Jonathan S. Lindsey
  • Stepwise fabrication of molecular-based, cross linked, light harvesting arrays
    Patent number: 7884280
    Abstract: A method of forming a crosslinked, non-discotic backbone polymer coating on a substrate, comprises the steps of: (a) coupling a layer of porphyrinic macrocycles to the substrate; (b) cross-linking the layer of porphyrinic macrocycles to form a layer of cross-linked porphyrinic macrocycles; and then (c) coupling a subsequent layer of porphyrinic macrocycles to the layer of cross-linked porphyrinic macrocycles of step (b) to form a non-discotic backbone polymer of porphyrinic macrocycles between the cross linked layer of step (b) and the subsequent layer of porphyrinic macrocycles to form a crosslinked, non-discotic backbone polymer coating thereon. Light harvesting arrays and solar cells that can be produced by such methods are also described.
    Type: Grant
    Filed: May 25, 2004
    Date of Patent: February 8, 2011
    Assignee: North Carolina State University
    Inventor: Jonathan S. Lindsey
  • Substituted benzazoloporphyrazines for polymerization and surface attachment and articles formed therefrom
    Publication number: 20110015388
    Abstract: The present invention provides an article of manufacture formed from a substrate and a benzazoloporphyrazine bound to the substrate. The article may take a variety of different forms and may be for example an electrochromic display, a molecular capacitor, a battery, a solar cell, or a molecular memory device. Methods of making such articles, along with compounds, methods and intermediates useful for making such benzazoloporphyrazines, are also described.
    Type: Application
    Filed: June 5, 2006
    Publication date: January 20, 2011
    Inventors: W. Justin Youngblood, Jonathan S. Lindsey
  • PROCEDURE FOR PREPARING REDOX-ACTIVE POLYMERS ON SURFACES
    Publication number: 20100330284
    Abstract: This invention provides novel methods for the formation of redox-active polymers attached to surfaces. In certain embodiments, the methods involve providing redox-active molecules bearing at least a first reactive site or group and a second reactive site or group; and contacting the surface with the redox-active molecules where the contacting is under conditions that result in attachment of said redox-active molecules to said surface via the first reactive site or group and attachment of redox-active molecules via the second reactive site or group, to the redox-active molecules attached to the surface thereby forming a polymer attached to said surface where the polymers comprise at least two of said redox-active molecules.
    Type: Application
    Filed: November 6, 2008
    Publication date: December 30, 2010
    Applicants: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, THE NORTH CAROLINA STATE UNIVERSITY
    Inventors: David F. Bocian, Zhiming Liu, Jonathan S. Lindsey
  • GEOMETRIC SYNTHESIS OF PORPHYRIN RODS
    Publication number: 20100305314
    Abstract: A method of making a compound of Formula I? comprises reacting a compound of the formula DLCHO, with a compound of the formula to produce the compound of Formula I?. Methods of using the compounds are also described, particularly as intermediates for the synthesis of porphyrin rods, which porphyrin rods are in turn useful for (among other things) the production of molecular memory devices.
    Type: Application
    Filed: August 13, 2010
    Publication date: December 2, 2010
    Inventors: Jonathan S. Lindsey, Lianhe Yu, Patchanita Thamyongkit, Anil D. Bhise
  • Open circuit potential amperometry and voltammetry
    Patent number: 7826250
    Abstract: This invention provides approaches to improve the signal to noise ratio (S/N) in electrochemical measurements (e.g., amperometry, voltammetry, etc.). In particular, a method is described wherein the faradaic current is temporally dissociated from the charging current associated with reading the charge of a redox-active species (e.g., a self-assembled monolayer (SAM)). This method, designated herein as open circuit potential amperometry (OCPA), quantitatively reads the charge of the redox species bound to (electrically coupled to) an electrode surface, while discriminating against both charging current(s) and amperometric signal(s) that arise, e.g., from diffusion-based species in solution.
    Type: Grant
    Filed: April 7, 2005
    Date of Patent: November 2, 2010
    Assignee: North Carolina State Univeristy
    Inventors: Werner G. Kuhr, David F. Bocian, Jonathan S. Lindsey, Kristian A. Roth
  • Geometric synthesis of porphyrin rods
    Patent number: 7799910
    Abstract: A method of making a compound of Formula I? comprises reacting a compound of the formula DLCHO, with a compound of the formula to produce the compound of Formula I?. Methods of using the compounds are also described, particularly as intermediates for the synthesis of porphyrin rods, which porphyrin rods are in turn useful for (among other things) the production of molecular memory devices.
    Type: Grant
    Filed: January 3, 2006
    Date of Patent: September 21, 2010
    Assignee: North Carolina State University
    Inventors: Jonathan S. Lindsey, Lianhe Yu, Patchanita Thamyongkit, Anil D. Bhise
  • METHOD OF MAKING PORPHYRINS
    Publication number: 20100222573
    Abstract: A method of making a compound of Formula I: is carried out by condensing a pair of compounds of Formula II (which pair may be the same or different), or by condensing a compound of Formula III with a compound Formula IV, to produce a compound of Formula I. The condensing step may be carried out with a metal salt under basic conditions.
    Type: Application
    Filed: May 14, 2010
    Publication date: September 2, 2010
    Inventors: Dilek Dogutan Kiper, Marcin Ptaszek, Jonathan S. Lindsey
  • METHODS AND INTERMEDIATES FOR THE SYNTHESIS OF DIPYRRIN-SUBSTITUTED PORPHYRINIC MACROCYCLES
    Publication number: 20100200066
    Abstract: The present invention provides dipyrrin substituted porphyrinic macrocycles, intermediates useful for making the same, and methods of making the same. Such compounds may be used for purposes including the making of molecular memory devices, solar cells and light harvesting arrays.
    Type: Application
    Filed: April 8, 2010
    Publication date: August 12, 2010
    Inventors: Lianhe Yu, Kannan Muthukumaran, Prathapan Sreedharan, Jonathan S. Lindsey
  • REFINED ROUTES TO CHLORIN BUILDING BLOCKS
    Publication number: 20100204465
    Abstract: A method of making chlorins comprises the steps of reacting (e.g. condensing) a dipyrrin western half intermediate with an eastern half intermediate to form a tetrahydrobilene, and then cyclizing the tetrahydrobilene to form a chlorin. Intermediates including tetrahydrobilenes useful in such reactions are also described.
    Type: Application
    Filed: January 25, 2010
    Publication date: August 12, 2010
    Inventors: Jonathan S. Lindsey, Masahiko Taniguchi, Doyoung Ra, Guoning Mo, Thiagarajan Balasubramanian
  • Method of making porphyrins
    Patent number: 7745618
    Abstract: A method of making a compound of Formula I: is carried out by condensing a pair of compounds of Formula II (which pair may be the same or different), or by condensing a compound of Formula III with a compound Formula IV, to produce a compound of Formula I. The condensing step may be carried out with a metal salt under basic conditions.
    Type: Grant
    Filed: February 25, 2008
    Date of Patent: June 29, 2010
    Assignee: North Carolina State University
    Inventors: Dilek Dogutan Kiper, Marcin Ptaszek, Jonathan S. Lindsey
  • Methods and intermediates for the synthesis of dipyrrin-substituted porphyrinic macrocycles
    Patent number: 7723513
    Abstract: The present invention provides dipyrrin substituted porphyrinic macrocycles, intermediates useful for making the same, and methods of making the same. Such compounds may be used for purposes including the making of molecular memory devices, solar cells and light harvesting arrays.
    Type: Grant
    Filed: April 20, 2007
    Date of Patent: May 25, 2010
    Assignee: North Carolina State University
    Inventors: Lianhe Yu, Kannan Muthukumaran, Prathapan Sreedharan, Jonathan S. Lindsey
  • Synthesis of porphyrins designed for attachment to electroactive surfaces via one or more carbon tethers
    Patent number: 7718794
    Abstract: Porphyrin compounds having a surface attachment group coupled thereto at the 5 position are described. The surface attachment group has the formula: wherein R is —CHCH2 or —CCH and Ar is an aromatic group. Methods and intermediates useful for making such compounds are also described.
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: May 18, 2010
    Assignees: North Carolina State University, ZettaCore, Inc.
    Inventors: Jonathan S. Lindsey, Robert S. Loewe
  • Refined routes to chlorin building blocks
    Patent number: 7678900
    Abstract: A method of making chlorins comprises the steps of reacting (e.g. condensing) a dipyrrin western half intermediate with an eastern half intermediate to form a tetrahydrobilene, and then cyclizing the tetrahydrobilene to form a chlorin. Intermediates including tetrahydrobilenes useful in such reactions are also described.
    Type: Grant
    Filed: November 14, 2008
    Date of Patent: March 16, 2010
    Assignee: North Carolina State University
    Inventors: Jonathan S. Lindsey, Masahiko Taniguchi, Doyoung Ra, Guoning Mo, Thiagarajan Balasubramanian
  • Self-assembled photosynthesis-inspired light harvesting material and solar cells containing the same
    Patent number: 7633007
    Abstract: A solar cell is described that comprises: (a) a semiconductor charge separation material; (b) at least one electrode connected to the charge separation material; and (c) a light-harvesting film on the charge separation material, the light-harvesting film comprising non-covalently coupled, self-assembled units of porphyrinic macrocycles. The porphyrinic macrocycles preferably comprise: (i) an intramolecularly coordinated metal; (ii) a first coordinating substituent; and (iii) a second coordinating substituent opposite the first coordinating substituent. The porphyrinic macrocycles can be assembled by repeating intermolecular coordination complexes of the metal, the first coordinating substituent and the second coordinating substituent.
    Type: Grant
    Filed: July 24, 2007
    Date of Patent: December 15, 2009
    Assignee: North Carolina State University
    Inventors: Jonathan S. Lindsey, Muthiah Chinnasamy, Dazhong Fan
  • SWALLOWTAIL MOTIFS FOR IMPARTING WATER SOLUBILITY TO PORPHYRINIC COMPOUNDS
    Publication number: 20090297456
    Abstract: Porphyrinic compounds that contain solubilizing groups are described, along with methods of making and using the same and compositions comprising such compounds. Examples of such compounds include compounds of Formula (I) wherein: Z is a porphyrinic macrocyclic, Alk1 and Alk2 are each independently an alkylidene chain; L is a linking group or is absent; R1 is preferably an ionic group or polar group; R2 is an ionic group, polar group, bioconjugatable group, or targeting group: R3 is present or absent and when present is a halo group, bioconjugatable group, or targeting group, n is O or 1 (that is, the CH group is present, or Alk1 and Alk2 are bonded directly to a carbon of the porphyrinic macrocycle Z); or a salt thereof.
    Type: Application
    Filed: October 19, 2006
    Publication date: December 3, 2009
    Inventors: K. Eszter Borbas, Jonathan S. Lindsey