Nanosurfactant formulations and use therefor

Patent metadata

Field	Value
Publication number	US-11939481-B2
Application number	US-202117357805-A
Country	US
Kind code	B2
Filing date	Jun 24, 2021
Priority date	Jun 25, 2020
Publication date	Mar 26, 2024
Grant date	Mar 26, 2024

Abstract

Provided are an ink composition, comprising greater than 0.2% by weight a graphene quantum dot nanosurfactant, a printable material, and a solvent, wherein the printable material is dispersed in the solvent by the graphene quantum dot nanosurfactant, and a method of preparing an ink composition. Advantageously, the present ink composition may be printed onto 2D and 3D substrates to form printed films with improved mechanical stability and photoconductance.

First claim

What is claimed is:

1. An ink composition, comprising:
about 0.5% to about 2.0% by weight of a graphene quantum dot nanosurfactant;
a printable material; and
a solvent,
wherein the printable material is dispersed in the solvent by the graphene quantum dot nanosurfactant, and
wherein a weight ratio of the printable material to the graphene quantum dot nanosurfactant is about 0.1:1 to about 2:1.

2. The ink composition of claim 1 , wherein the graphene quantum dot nanosurfactant is produced by reacting citric acid and 4-styrenesulfonic acid sodium salt.

3. The ink composition of claim 1 , wherein the printable material comprises graphene, transition metal dichalcogenide (TMD), hexagonal boron nitride (h-BN), carbon nanotubes (CNT), or a combination thereof.

4. The ink composition of claim 1 , comprising about 0.1% to about 2.0% by weight the printable material.

5. The ink composition of claim 1 , comprising about 0.5% to about 2.0% by weight the printable material.

6. The ink composition of claim 1 , wherein the solvent comprises water, ethanol, isopropanol, cyclohexanone, terpineol, ethylene glycol, or a combination thereof.

7. The ink composition of claim 1 , having a Zeta potential of about −50 mV to about −65 mV.

8. An ink composition, comprising:
greater than 0.2% by weight of a graphene quantum dot nanosurfactant;
about 0.5% to about 2.0% by weight of a printable material; and
a solvent,
wherein the printable material is dispersed in the solvent by the graphene quantum dot nanosurfactant, and
wherein a weight ratio of the printable material to the graphene quantum dot nanosurfactant is about 0.1:1 to about 2:1.

9. The ink composition of claim 8 , wherein the graphene quantum dot nanosurfactant is produced by reacting citric acid and 4-styrenesulfonic acid sodium salt.

10. The ink composition of claim 8 , wherein the printable material comprises graphene, transition metal dichalcogenide (TMD), hexagonal boron nitride (h-BN), carbon nanotubes (CNT), or a combination thereof.

11. The ink composition of claim 8 , wherein the solvent comprises water, ethanol, isopropanol, cyclohexanone, terpineol, ethylene glycol, or a combination thereof.

Assignees

• Univ Notre Dame Du Lac

Inventors

• Zhang Yanliang
• Zeng Minxiang

Classifications

• C09D11/38 Primary

  characterised by non-macromolecular additives other than solvents, pigments or dyes · CPC title

• C09D11/033

  characterised by the solvent · CPC title

• C09D11/037

  characterised by the pigment · CPC title

• C09D11/322

  Pigment inks · CPC title

• C09D11/52

  Electrically conductive inks · CPC title