Complimentary polymer electrochromic device

• US 9,594,284 B2
• Filed: 06/12/2015
• Issued: 03/14/2017
• Est. Priority Date: 11/15/2011
• Status: Active Grant

• Current Assignee: Ashwin-Ushas Corporation, Inc.
• Original Assignee: Ashwin-Ushas Corporation, Inc.
• Inventors: Chandrasekhar, Prasanna
• Primary Examiner(s): JARRELL, NOBLE E
• Application Number:
  US14/738,036
• Publication Number:
  US 20150275385A1
• Time in Patent Office: 641 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: B05D 5/12 to obtain a coating with specific electrical properties
• CPC Class Codes: C07C 29/147 of carboxylic acids or derivatives thereof
• CPC Class Codes: C07C 33/46 containing only six-membered aromatic rings as cyclic parts
• CPC Class Codes: C07C 57/38 polycyclic
• CPC Class Codes: C07C 69/65 of unsaturated acids
• CPC Class Codes: C07D 495/04 Ortho-condensed systems
• CPC Class Codes: C09D 5/4419 with polymers obtained otherwise than by polymerisation reactions only involving carbon-to-carbon unsaturated bonds
• CPC Class Codes: C09D 5/4476 comprising polymerisation in situ
• CPC Class Codes: C09K 2211/1433 bridged by heteroatoms, e.g. N, P, Si or B
• CPC Class Codes: C09K 2211/1491 containing other combinations of heteroatoms
• CPC Class Codes: C09K 9/02 Organic tenebrescent materials
• CPC Class Codes: C25D 3/02 from solutions C25D5/34 - C25D5/46 take precedence
• CPC Class Codes: C25D 9/02 with organic materials
• CPC Class Codes: G02F 1/13439 characterised by their electrical, optical, physical properties; materials therefor; method of making
• CPC Class Codes: G02F 1/1503 caused by oxidation-reduction reactions in organic liquid solutions, e.g. viologen solutions
• CPC Class Codes: G02F 1/1506 caused by electrodeposition, e.g. electrolytic deposition of an inorganic material on or close to an electrode
• CPC Class Codes: G02F 1/15165 Polymers
• CPC Class Codes: G02F 1/155 Electrodes
• CPC Class Codes: G02F 2001/1502 complementary cell

Abstract

A complimentary polymer or “dual-polymer” electrochromic device and methods of preparing the same are provided.

Claims

1. A method for preparing an electrode, wherein the electrode comprises a polymer comprising N,N′

-diphenyl benzidine monomer, the method comprising the steps of;

(a) providing a deposition solution comprising the N,N′

-diphenyl benzidine monomer;

(b) uniformly depositing the polymer onto a substrate in contact with the deposition solution to yield the electrode; and

wherein the deposition solution comprises dimethylformamide and acetonitrile in a ratio of at least about 6;

1 by volume, respectively.

2. The method of claim 1, wherein the deposition solution further comprises one or more of diphenyl amine monomer and 4-aminobiphenyl monomer.

3. The method of claim 1, wherein the deposition solution comprises N,N′

-diphenyl benzidine monomer, diphenyl amine monomer, and 4-aminobiphenyl monomer in a molar ratio in the range of about 1;

1;

1;

to 50;

1;

1, respectively.

4. The method of claim 1, wherein the deposition solution comprises N,N′

-diphenyl benzidine monomer, diphenyl amine monomer, and 4-aminobiphenyl monomer in a molar ratio in the range of about 1;

1;

1;

to 20;

1;

1, respectively.

5. The method of claim 1, wherein the deposition solution comprises N,N′

-diphenyl benzidine monomer, diphenyl amine monomer, and 4-aminobiphenyl monomer in a molar ratio in the range of about 1;

1;

1;

to 9;

1;

1, respectively.

6. The method of claim 1, wherein the deposition solution comprises N,N′

-diphenyl benzidine monomer, diphenyl amine monomer, and 4-aminobiphenyl monomer in a molar ratio in the range of about 3;

1;

1;

to 7;

1;

1, respectively.

7. The method of claim 1, wherein the deposition solution comprises N,N′

-diphenyl benzidine monomer, diphenyl amine monomer, and 4-aminobiphenyl monomer in a molar ratio of about 5;

1;

1, respectively.

8. The method of claim 1, wherein the deposition solution comprises a salt.

9. The method of claim 8, wherein the salt comprises one or more of lithium triflate and LiBF₄.

10. The method of claim 1, wherein the substrate comprises a conductive transparent substrate.

11. The method of claim 10, wherein the conductive transparent substrate comprises one or more of an indium-tin-oxide(ITO)/glass substrate, ITO/poly(ethylene terephthalate) (PET) substrate, tin-oxide/glass substrate, tin-oxide/PET substrate, gold/glass substrate, carbon-nanotubes/glass substrate, carbon-nanotubes/PET substrate, and gold/PET substrate.