# US 7,744,777 B2 · Water dispersible polyanilines made with polymeric acid colloids for electronics applications

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 7,744,777 B2
- Document ID: US7744777B2
- Status: Granted
- Kind: B2
- Application number: 12/062,657
- Filed: 2008-04-04
- Published: 2008-09-04
- Granted: 2010-06-29
- Earliest claimed: 2002-09-24
- Assignees: E. I. Du Pont de Nemours and Company
- Inventors: Che-Hsiung Hsu; Frank P. Uckert
- Web page: https://patentgrep.com/patent/US7744777B2

## CPC

- C08L 79/02: Polyamines
- B82Y 10/00: Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
- B82Y 30/00: Nanotechnology for materials or surface science, e.g. nanocomposites
- C08L 33/02: Homopolymers or copolymers of acids; Metal or ammonium salts thereof
- G11C 13/0014: {comprising cells based on organic memory material}
- G11C 13/0016: {comprising polymers}
- G11C 17/165: {Memory cells which are electrically programmed to cause a change in resistance, e.g. to permit multiple resistance steps to be programmed rather than conduct to or from non-conduct change of fuses and antifuses (digital stores using resistance random access memory elements G11C13/0002)}
- H01B 1/128: {comprising six-membered aromatic rings in the main chain, e.g. polyanilines, polyphenylenes}
- H01G 11/48: Conductive polymers
- H01G 11/56: Solid electrolytes, e.g. gels; Additives therein
- H10K 50/14: Carrier transporting layers
- H10K 71/12: using liquid deposition, e.g. spin coating
- H10K 85/111: {comprising aromatic, heteroaromatic, or aryl chains, e.g. polyaniline, polyphenylene or polyphenylene vinylene}
- G11C 17/16: using electrically-fusible links
- G11C 2213/51: Structure including a barrier layer preventing or limiting migration, diffusion of ions or charges or formation of electrolytes near an electrode
- H10K 10/464: {Lateral top-gate IGFETs comprising only a single gate}
- H10K 50/10: OLEDs or polymer light-emitting diodes [PLED]
- H10K 59/80: Constructional details
- H10K 71/60: Forming conductive regions or layers, e.g. electrodes
- Y02E 10/549: Organic PV cells
- Y02E 60/13: Energy storage using capacitors
- Y10S 428/917: Electroluminescent
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- B82Y: SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- G11C: STATIC STORES (semiconductor memory devices H10B)
- H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K})
- H01G: CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B3/00; capacitors having potential barriers H10D1/62, H10K10/10)
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

An electronic device is provided which is a thin field effect transistor, a field effect resistance device, photosensor, photoswitch, light-emitting diode, light-emitting diode display, phototransistor, phototube, IR detector, diode laser, electrochemic displays, electromagnetic shielding device, solid electrolyte capacitors, energy storage device, memory storage device, biosensor, photoconductive cell, photovoltaic device, solar cell or diode, and comprises at least one layer comprising a composition comprising at least one polyaniline and at least one colloid-forming polymeric acid. Methods for making such devices are also provided.

## Claims

### Claim 1

An electronic device comprising at least one layer comprising a composition comprising at least one polyaniline and at least one colloid-forming polymeric acid.

### Claim 2 (depends on 1)

The layer according to claim 1, wherein the composition has a pH greater than 3.5.

### Claim 3 (depends on 1)

The device of claim 1, wherein said device is a thin field effect transistor, a field effect resistance device, photosensor, photoswitch, light-emitting diode, light-emitting diode display, phototransistor, phototube, IR detector, diode laser, electrochemic displays, electromagnetic shielding device, solid electrolyte capacitors, energy storage device, memory storage device, biosensor, photoconductive cell, photovoltaic device, solar cell or diode.

### Claim 4

A method for producing an aqueous dispersion of at least one polyaniline comprising polymerizing aniline monomers in the presence of at least one colloid-forming polymeric acid.

### Claim 5 (depends on 4)

A method of claim 4, further comprising forming a combination of water, aniline monomer, colloid-forming polymeric acid, an oxidizing agent, and optionally a catalyst, in any order, provided that at least a portion of the colloid-forming polymeric acid is present when at least one of the aniline monomer and the oxidizing agent is added.

### Claim 6 (depends on 4)

A method according to claim 4, wherein the polymeric acid is selected from polymeric sulfonic acids, polymeric carboxylic acids, polymeric acrylic acids, polymeric phosphoric acids, polymeric phosphonic acid, and mixtures thereof and wherein said aniline monomer has Formula I
wherein:
n is an integer from 0 to 4;
m is an integer from 1 to 5, with the proviso that n+m=5; and
R1 is independently selected so as to be the same or different at each occurrence and is selected from alkyl, alkenyl, alkoxy, cycloalkyl, cycloalkenyl, alkanoyl, alkythio, aryloxy, alkylthioalkyl, alkylaryl, arylalkyl, amino, alkylamino, dialkylamino, aryl, alkylsulfinyl, alkoxyalkyl, alkylsulfonyl, arylthio, arylsulfinyl, alkoxycarbonyl, arylsulfonyl, carboxylic acid, halogen, cyano, or alkyl substituted with one or more of sulfonic acid, carboxylic acid, halo, nitro, cyano or epoxy moieties; or any two R1 groups together may form an alkylene or alkenylene chain completing a 3, 4, 5, 6, or 7-membered aromatic or alicyclic ring, which ring may optionally include one or more divalent nitrogen, sulfur or oxygen atoms.

### Claim 7 (depends on 6)

A method according to claim 6, wherein said polymeric acid comprises a fluorinated sulfonic acid.

### Claim 8 (depends on 6)

A method according to claim 6, wherein said method further comprises the addition of an oxidizing agent selected from ammonium persulfate, sodium persulfate, potassium persulfate, and mixtures thereof.

### Claim 9 (depends on 6)

A method according to claim 6, wherein the method further comprises the use of a catalyst selected from ferric sulfate, ferric chloride, and mixtures thereof.

### Claim 10 (depends on 6)

A method according to claim 6, wherein the combination further comprises a co-dispersing liquid selected from ethers, alcohols, alcohol ethers, cyclic ethers, ketones, nitriles, sulfoxides, amides, and combinations thereof.

### Claim 11 (depends on 6)

A method according to claim 6, wherein the combination further comprises a co-acid selected from a water-soluble inorganic acid, a water-soluble organic acid, a colloid-forming polymeric acid, and combinations thereof.

### Claim 12 (depends on 6)

A method according to claim 6, wherein the method further comprises contacting a reaction product with at least one ion exchange resin.

### Claim 13

An organic electronic device comprising a buffer layer deposited from an aqueous dispersion of polyaniline and at least colloid-forming polymeric acid.

### Claim 14 (depends on 13)

The device of claim 13, wherein said device is a thin field effect transistor, a field effect resistance device, a photosensor, photoswitch, phototransistor, biosensor, phototube, IR detectors, photovoltaic device, photoconductive cell, solar cell, biosensor, light-emitting diode, light-emitting diode display, diode laser, electrochromic display diode, solid electrolyte capacitors, energy storage device, or memory storage device.