Water-soluble electrically conductive polymers

Patent metadata

Field	Value
Publication number	US-9243111-B2
Application number	US-201314027049-A
Country	US
Kind code	B2
Filing date	Sep 13, 2013
Priority date	Dec 30, 2009
Publication date	Jan 26, 2016
Grant date	Jan 26, 2016

Abstract

Water-soluble electrically conductive polymers and a composition comprising such polymers are provided. Also, an electrically conductive layer or film formed from the composition, and articles comprising the electrically conductive layer or film are provided. The electrically conductive polymers according to the present disclosure have one or more hydrophilic side chains. Hydrophilic side chains are covalently bonded to the conductive polymers, which allow the polymer to be stable at high temperature. Thus, the stability of electrical conductivity is prolonged. Depending on the concentration of hydrophilic side chains, the conductivity may be changed. The hydrophilic side chains provide a successful way to fabricate a ductile film exhibiting tunable conductivity. Furthermore, high levels of surface-resistance uniformity can be achieved in the field of coating technology that uses eco-friendly water-based solvents to uniformly and quickly coat the conductive polymer on to plastic film surfaces.

First claim

The invention claimed is:

1. A polymer comprising n repeating units of Formula 5:

wherein,
X 3 is S;
R 12 and R 12 ′ independently represent

R 3 , R 5 , R 6 , and R 8 are independently hydrogen;
R 4 and R 7 are

wherein
K represents alkylene having one or two carbon atoms;
d is 1 to 3;
R 9 is H; and
n represents an integer having a range of about 100 to 1,000.

2. The polymer of claim 1 , wherein the polymer is doped with polymeric acids or Lewis acids as electron acceptors.

3. A composition comprising the polymer according to claim 1 .

4. The composition of claim 3 , further comprising poly(3,4-ethylenedioxythiophene)poly(styrenesulfonate) [PEDOT:PSS].

5. An electrically conductive layer formed from the composition of claim 3 .

6. An electrically conductive film formed from the composition of claim 3 .

7. An article comprising at least one electrically conductive layer formed from the composition of claim 3 .

8. The article of claim 7 , wherein the article is selected from the group consisting of light-emitting diodes, light emitting diode displays, liquid crystal displays, electronic paper, touchscreens, diode lasers, photodetectors, photoconductive cells, photoresistors, photoswitches, phototransistors, phototubes, IR detectors, photovoltaic devices, solar cells, transistors, diodes, memory storage devices, antistatic films, biosensors, electrochromic devices, solid electrolyte capacitors, energy storage devices, electromagnetic wave shielding films, window de-icers, heat reflectors, architectural materials, electro-optic modulators, microresonators, interferometers, optical switches, directional couplers and multiplexers.

Assignees

• Univ Korea Res & Bus Found

Inventors

• Choi Dong Hoon

Classifications

• C08F24/00 Primary

  Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a heterocyclic ring containing oxygen (cyclic esters of polyfunctional acids C08F18/00; cyclic anhydrides of unsaturated acids C08F20/00, C08F22/00) · CPC title

• C08G75/06 Primary

  from cyclic thioethers · CPC title

• C08G2261/143

  Side-chains containing nitrogen · CPC title

• C08F28/02

  by a bond to sulfur · CPC title

• C08G2261/794

  with polymeric dopants · CPC title