Patents – Alan J. Heeger
(1984-1994)

Heeger Page · Resources with Additional Information · Patents (1995-1999)


US 4,442,187  BATTERIES HAVING CONJUGATED POLYMER ELECTRODES  --  Heeger, Alan; et. al.; April 10, 1984
Conjugated polymers are doped with ionic dopant species to a preselected room temperature electrical conductivity ranging from that characteristic of semiconductor behavior to that characteristic of metallic behavior, by means of reversible electrochemical doping procedures. The doping procedures are carried out in an electrochemical cell wherein the polymer to be doped is employed as one or both of the electrodes, and the electrolyte is a compound which is ionizable into the ionic dopant species. Upon operation of the cell, the polymer, if used as the anode, becomes doped with an anionic dopant species to a p-type material; or if used as the cathode, becomes doped with a cationic dopant species to an n-type material. The electrochemical doping reactions and their reverse electrochemical undoping reactions are utilized as the charging and discharging mechanisms of novel lightweight secondary batteries which employ doped or dopable conjugated polymers as one or both of their electrodes.

US 4,640,748   POLYISOTHIANAPHTENE, A NEW CONDUCTING POLYMER   -- Heeger, Alan; et. al.; February 3, 1987
A polymer having an isothianaphthene structure represented by the formula (Ia) and/or Ib): ##STR1## wherein R.sup.1 and R.sup.2 each represents a hydrogen atom or a hydrocarbon residue having 1 to 5 carbon atoms such as methyl, methoxy and thiomethyl, with the proviso that R.sup.1 and R.sup.2 may link together to form, along with the benzene ring, a fused ring which is naphthalene; X is sulfur, selenium or tellurium; Y.sup.- represents an anion of an electrolyte; z represents a number from 0.01 to 1 showing a ratio of the anion per mol of a monomer; and n represents a number of from 5 to 500 showing a degree of polymerization. An electrochromic display wherein a high molecular weight conductive membrane formed on a conductive transparent base is used as a display base and an opposing electrode is arranged thereunder via a liquid electrolyte, which is characterized in that said high molecular weight conductive membrane is a polymer having an isothianaphthene structure and capable of being reversibly oxidized or reduced.

US 4,728,589   REVERSIBLE ELECTROCHEMICAL DOPING OF CONJUGATED POLYMERS AND SECONDARY BATTERIES BASED THEREON   --   Heeger, Alan; et. al.; March 1, 1988
A secondary battery comprises at least one electrode having as an active materials a conjugated polymer, the polymer being doped to an electrically conducting state. Particularly, the battery may comprise the polymer as a cathode and a lithium anode.

US 4,772,940  POLYMER HAVING ISOTHIANAPHTHENE STRUCTURE AND ELECTROCHROMIC DISPLAY  --  Heeger, Alan; et. al.; September 20, 1988
An electrochromic display device is provided in which a high molecular weight conductive membrane is formed on a conductive, transparent base, and an opposing electrode is arranged thereunder via a liquid electrolyte. The conductive, electrochromic membrane is a polyisothianaphthene, a chemically and physically stable material which gives the device superior electrochromic switching characteristics, including a fast response time and a high contrast color change upon oxidation and reduction. Other applications which rely on the electrochromic properties of the polyisothianaphthene are disclosed as well.

US 4,795,242   CONDUCTING SUBSTITUTED POLYISOTHIANAPHTHENES  --  Heeger, Alan; et. al.; January 3, 1989
Polyisothianaphthene substituted in the 5 and/or 6 positions so as to have an oxygen atom adjacent to C.sub.5 or C.sub.6. Substituents include alkoxys, hydroxys and dioxyalkylenes. The polymers are conducting and useful in electrochromic displays and as electrode materials.

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US 4,801,512    REVERSIBLE ELECTROCHEMICAL DOPING OF CONJUGATED POLYMERS AND SECONDARY BATTERIES BASED THEREON  --   Heeger, Alan; et. al.; January 31, 1989
Conjugated polymers are doped with ionic dopant species to a preselected room temperature electrical conductivity ranging from that characteristic of semiconductor behavior to that characteristic of metallic behavior, by means of reversible electrochemical doping procedures. The doping procedures are carried out in an electrochemical cell wherein the polymer to be doped is employed as one or both of the electrodes, and the electrolyte is a compound which is ionizable into the ionic dopant species to a p-type material; or if used as the cathode, becomes doped with a cationic dopant species to an n-type material.

US 5,028,354    CONDUCTIVE ARTICLES OF INTRACTABLE POLYMERS METHOD FOR MAKING  --   Heeger, Alan; et. al.; July 2, 1991
Conducting articles such as fibers, films, tapes and the like are fabricated from intractable conducting polymers such as polyacetylene. The articles are prepared by (a) forming a gel of a carrier polymer in a compatible solvent, (b) polymerizing, within the gel, a selected monomer, and (c) doping the article so provided. The articles are highly electrically conductive as well as mechanically quite strong.

US 5,310,781   SELF-DOPED POLYMERS FROM POLYANILINE WITH BRONSTED ACID GROUPS  --  Heeger, Alan; Wudl, Fred; May 10, 1994
A self-doped conducting polymer having along its backbone a .pi.-electron conjugated system which comprises a plurality of monomer units, between about 0.01 and 100 mole % of the units having covalently linked thereto at least one Bronsted acid group. The conductive zwitterionic polymer is also provided, as are monomers useful in the preparation of the polymer and electrodes comprising the polymer.

US 5,342,912   SELF-DOPED ZWITTERIONIC ANILINE POLYMERS  --  Heeger, Alan; Wudl, Fred; August 30, 1994
A self-doped conducting polymer having along its backbone a .pi.-electron conjugated system which comprises a plurality of monomer units, between about 0.01 and 100 mole % of the units having covalently linked thereto at least one Bronsted acid group. The conductive zwitterionic polymer is also provided, as are monomers useful in the preparation of the polymer and electrodes comprising the polymer.

US 5,367,041   SELF-DOPED ZWITTERIONIC POLYMERS  --  Heeger, Alan; Wudl, Fred; November 22, 1994
A self-doped conducting polymer having along its backbone a .pi.-electron conjugated system which comprises a plurality of monomer units, between about 0.01 and 100 mole % of the units having covalently linked thereto at least one Bronsted acid group. The conductive zwitterionic polymer is also provided, as are monomers useful in the preparation of the polymer and electrodes comprising the polymer.

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