Homogeneous anaerobically stable quantum dot concentrates

Patent metadata

Field	Value
Publication number	US-10919770-B2
Application number	US-201816015582-A
Country	US
Kind code	B2
Filing date	Jun 22, 2018
Priority date	Jun 23, 2017
Publication date	Feb 16, 2021
Grant date	Feb 16, 2021

Abstract

The present disclosure provides nanostructure compositions and methods of producing nanostructure compositions. The nanostructure compositions comprise at least one population of nanostructures, at least one reactive diluent, at least one anaerobic stabilizer, and optionally at least one organic resin. The present disclosure also provides nanostructure films comprising a nanostructure layer and methods of making nanostructure films.

First claim

What is claimed is:

1. A nanostructure composition, comprising:
(a) at least one population of nanostructures, wherein the at least one population of nanostructures contains a core selected from the group consisting of InP, InZnP, InGaP, CdSe, CdS, CdSSe, CdZnSe, CdZnS, ZnSe, ZnSSe, InAs, InGaAs, and InAsP;
(b) at least one reactive diluent;
(c) at least one anaerobic stabilizer, wherein the at least one anaerobic stabilizer is a nitroxide-containing compound or a nitroso-containing compound; and
(d) at least one organic resin, wherein the at least one organic resin is a mercapto-functional compound.

2. The nanostructure composition of claim 1 , wherein the at least one reactive diluent is isobornyl acrylate.

3. The nanostructure composition of claim 1 , wherein the at least one anaerobic stabilizer comprises a

group.

4. The nanostructure composition of claim 1 , wherein the at least one anaerobic stabilizer is 4-hydroxy-2,2,6,6-tetramethyl-1-piperidinyloxy (4-hydroxy-TEMPO).

5. The nanostructure composition of claim 1 , wherein the at least one reactive diluent is isobornyl acrylate and the at least one anaerobic stabilizer is 4-hydroxy-TEMPO.

6. The nanostructure composition of claim 5 , wherein the nanostructure composition comprises as a weight percentage about 200 ppm 4-hydroxy-TEMPO in relation to isobornyl acrylate.

7. The nanostructure composition of claim 1 , wherein the nanostructure composition is stable for between 1 day and 3 years.

8. A nanostructure film layer comprising:
(a) at least one population of nanostructures, wherein the at least one population of nanostructures contains a core selected from the group consisting of InP, InZnP, InGaP, CdSe, CdS, CdSSe, CdZnSe, CdZnS, ZnSe, ZnSSe, InAs, InGaAs, and InAsP;
(b) at least one reactive diluent;
(c) at least one anaerobic stabilizer, wherein the at least one anaerobic stabilizer is a nitroxide- containing compound or a nitroso-containing compound; and
(d) at least one organic resin, wherein the at least one organic resin is a mercapto-functional compound.

9. The nanostructure film layer of claim 8 , wherein the at least one reactive diluent is isobornyl acrylate.

10. The nanostructure film layer of claim 8 , wherein the at least one anaerobic stabilizer comprises a

group.

11. The nanostructure film layer of claim 8 , wherein the at least one anaerobic stabilizer is 4-hydroxy-2,2,6,6-tetramethyl-1-piperidinyloxy (4-hydroxy-TEMPO).

12. The nanostructure film layer of claim 8 , wherein the at least one reactive diluent is isobornyl acrylate and the at least one anaerobic stabilizer is 4-hydroxy-TEMPO.

13. The nanostructure film layer of claim 12 , wherein the nanostructure film layer comprises as a weight percentage about 200 ppm 4-hydroxy-TEMPO in relation to isobornyl acrylate.

14. The nanostructure composition of claim 1 , wherein the mercapto-functional compound is pentaerythritol tetra(3-mercapto-propionate) (PETMP); trimethylol-propane tri(3-mercapto-propionate) (TMPMP); glycol di(3-mercapto-propionate) (GDMP); tris[25-(3-mercapto-propionyloxy)ethyl]isocyanurate (TEMPIC); di-pentaerythritol hexa(3-mercapto-propionate) (Di-PETMP); ethoxylated trimethylolpropane tri(3-mercapto-propionate); polycaprolactone tetra(3-mercapto-propionate); pentaerythritol tetramercaptoacetate (PETMA); trimethylol-propane trimercaptoacetate (TMPMA); or glycol dimercaptoacetate (GDMA).

15. The nanostructure film layer of claim 8 , wherein the mercapto-functional compound is pentaerythritol tetra(3-mercapto-propionate) (PETMP); trimethylol-propane tri(3-mercapto-propionate) (TMPMP); glycol di(3-mercapto-propionate) (GDMP); tris[25-(3-mercapto-propionyloxy)ethyl]isocyanurate (TEMPIC); di-pentaerythritol hexa(3-mercapto-propionate) (Di-PETMP); ethoxylated trimethylolpropane tri(3-mercapto-propionate); polycaprolactone tetra(3-mercapto-propionate); pentaerythritol tetramercaptoacetate (PETMA); trimethylol-propane trimercaptoacetate (TMPMA); or glycol dimercaptoacetate (GDMA).

Assignees

• Nanosys Inc

Inventors

• Smith Austin
• Olmeijer David
• Lynch Jared
• Tu Minghu
• Hotz Charles

Classifications

• H10H20/812

  within the light-emitting regions, e.g. having quantum confinement structures · CPC title

• G02F1/015

  based on semiconductor elements having potential barriers, e.g. having a PN or PIN junction (G02F1/03 takes precedence) · CPC title

• C09K11/88

  containing selenium, tellurium or unspecified chalcogen elements · CPC title

• C09K11/70

  containing phosphorus · CPC title

• C09K11/08

  containing inorganic luminescent materials · CPC title