Functionalized and processable conducting polymers

• US 20020037994A1
• Filed: 07/13/2001
• Published: 03/28/2002
• Est. Priority Date: 07/13/2000
• Status: Active Grant

• Current Assignee: Council On Postsecondary Education, State of Rhode Island and Providence Plantations
• Original Assignee: Council On Postsecondary Education
• Inventors: Yang, Sze Cheng
• Granted Patent: US 6,803,446 B2
• Time in Patent Office: Days
• US Class Current: 528/422
• CPC Class Codes: C08G 61/122 derived from five- or six-membered heterocyclic compounds, other than imides
• CPC Class Codes: C08L 2666/04 Macromolecular compounds according to groups C08L7/00 - C08L49/00, or C08L55/00 - C08L57/00; Derivatives thereof
• CPC Class Codes: C08L 79/02 Polyamines
• CPC Class Codes: C09D 165/00 Coating compositions based on macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain C09D107/00 - C09D157/00, C09D161/00 take precedence; Coating compositions based on derivatives of such polymers
• CPC Class Codes: C09D 5/24 Electrically-conducting paints conductive materials H01B1/00
• CPC Class Codes: H01B 1/122 Ionic conductors

Abstract

A electrically conductive polymeric composition comprising a plurality of polymeric complexes. Each polymeric complex comprises a strand of a π-conjugated polymer and strand of a polyelectrolyte. The polyelectrolyte is non-covalently bond to the π-conjugated polymer and has at least one reactive functional group that facilitates cross-linkage between the polymeric complexes when the polymeric complexes are heated.

Claims

1. An electrically conductive composition which comprises:

a plurality of polymeric complexes;

each polymeric complex comprising;

a strand of a π

-conjugated polymer; and

a strand of a polyelectrolyte, the polyelectrolyte being non-covalently bonded to the π

-conjugated polymer and having at least one reactive functional group, the reactive functional group facilitating the cross-linkage between the polymeric complexes when the complexes are heated.

2. The composition of claim 1 wherein the π

-conjugated polymer is selected from the group consisting of polyaniline, polypyrrole, polyacetylene and polythiophene.

3. The composition of claim 2 wherein the polyelectrolyte is selected from the group consisting of poly(butadiene-co-maleic acid), poly(vinylmethylether-co-maleic acid), poly(acrylic acid), poly(ethylmethacrylate-co-acrylic acid) and poly(acrylamide-co-acrylic acid).

4. The composition of 3 wherein the polyelectrolyte has a backbone and the functional group comprises:

at least one unsaturated double bond in the polymer backbone of the polyelectrolyte.

5. The composition of claim 4 wherein the functional group comprises at least one pendent group selected from the group consisting of carboxylic acid groups, hydroxy groups, amine groups, amide groups, nitrile groups, aldehyde groups and ketone groups.

6. The composition of claim 5 wherein there are at least two functional groups and each functional group reacts with each other or optionally with each other and a functional group from other polymeric complexes or optionally with each other and with the functional groups of other polymeric complexes.

7. The composition of claim 6 wherein the polymeric complexes are water-borne or optionally are dispersible in organic solvents.