Processes for preparation of sulfonated polyaniline compositions and uses thereof

• US 5,093,439 A
• Filed: 05/25/1990
• Issued: 03/03/1992
• Est. Priority Date: 10/19/1989
• Status: Expired due to Term

• Current Assignee: The Ohio State University Research Foundation
• Original Assignee: The Ohio State University Research Foundation
• Inventors: Yue, Jiang, Epstein, Arthur J.
• Primary Examiner(s): Kight, III, John
• Assistant Examiner(s): HAMPTON HIGHTOWER, PATRICIA
• Application Number:
  US07/529,012
• Time in Patent Office: 648 Days
• Field of Search: 528/210, 528/422, 528/487, 528/391, 525/540, 525/534, 525/535, 252/500, 252/518, 524/422, 524/429, 524/438, 428/364, 428/402, 428/524, 428/526
• US Class Current: 525/540
• CPC Class Codes: C08G 73/0266 Polyanilines or derivatives thereof
• CPC Class Codes: G02F 1/0126 Opto-optical modulation, i.e. control of one light beam by another light beam, not otherwise provided for in this subclass
• CPC Class Codes: G11B 7/244 comprising organic materials only
• CPC Class Codes: G11B 7/245 containing a polymeric component
• CPC Class Codes: H01B 1/128 comprising six-membered aromatic rings in the main chain, e.g. polyanilines, polyphenylenes
• CPC Class Codes: H01M 4/60 of organic compounds
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y10T 428/2913 Rod, strand, filament or fiber
• CPC Class Codes: Y10T 428/2982 Particulate matter [e.g., sphere, flake, etc.]
• CPC Class Codes: Y10T 428/31942 Of aldehyde or ketone condensation product
• CPC Class Codes: Y10T 428/31949 Next to cellulosic

Abstract

Sulfonic acid-substituted polyaniline compositions and their derivatives are produced by reacting a polyaniline polymer with SO₃ gas. The sulfonated polyaniline compositions have faster electronic and optical responses to electrochemical potentials and improved environmental stability solubility than the parent polyaniline polymer.

Claims

1. A process for producing a sulfonated polyaniline composition having a chemical composition of formula I ##STR8## wherein O≦

y≦

1, R₁, R₂, R₃, R₄, R₅ and R₆ are independently selected from the group consisting of H, SO₃^-, --SO₃ H, --R₇ SO₃^-, --R₇ SO₃ H, --OCH₃, --CH₃, --C₂ H₅, --F, --Cl, --Br, --I, --NR₇ 2, --NHCOR₇, --OH, --O^-, --SR₇, --OR₇, --OCOR₇, --NO₂, --COOH, --COOR₇, --COR₇, --CHO and --CN, wherein R₇ is a C₁ -C₈ alkyl, aryl or aralkyl group, and wherein the fraction of rings containing at least one R₁, R₂, R₃ or R₄ group being an --SO₃^-, --SO₃ H, --R₇ SO₃^-, or --R₇ SO₃ H varies from approximately 20 percent to one hundred percent, comprising reacting the polyaniline polymer or substituted polyaniline polymer and SO₃ gas.

2. The process according to claim 1 in which the reaction is conducted at a temperature range of between about room temperature and 100°

C.

3. The process according to claim 1 in which the reaction is carried out in air or inert atmosphere.

4. The process according to claim 1 in which the polyaniline polymer or substituted polyaniline polymer has a predetermined chain length which is not reduced in length during the reaction.

5. The process according to claim 1 in which a copolymer of polyaniline and sulfonated polyaniline is obtained by partially sulfonating the polyaniline polymer.

6. The process according to claim 5 in which the partial sulfonation of the polyaniline polymer comprises shortening sulfonation times and/or lowering sulfonation temperatures.

7. A sulfonated polyaniline composition of formula I, produced according to the process of claim 1.

8. The composition of claim 7, wherein the composition is a sulfonated polyaniline film.

9. The composition of claim 7, wherein the composition is an oriented sulfonated polyaniline film.

10. The composition of claim 7, wherein the composition is a sulfonated polyaniline film adhered to a substrate.

11. The composition of claim 7, wherein the composition is a sulfonated polyaniline fiber.

12. The composition of claim 7, wherein the composition is a polyaniline powder.