Formulations including nanoparticles

• US 9,303,153 B2
• Filed: 03/07/2012
• Issued: 04/05/2016
• Est. Priority Date: 09/09/2009
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: QD Vision, Inc. (Samsung Electronics Co. Ltd.)
• Inventors: Nick, Robert J.
• Primary Examiner(s): CAIN, EDWARD J
• Application Number:
  US13/414,463
• Publication Number:
  US 20120256134A1
• Time in Patent Office: 1,490 Days
• Field of Search: 523/210
• US Class Current: 1/1
• CPC Class Codes: B01J 13/18 In situ polymerisation with all reactants being present in the same phase
• CPC Class Codes: B82Y 20/00 Nanooptics, e.g. quantum optics or photonic crystals
• CPC Class Codes: C08F 220/1812 C12-(meth)acrylate, e.g. lauryl (meth)acrylate
• CPC Class Codes: C08K 13/02 Organic and inorganic ingredients
• CPC Class Codes: C08K 2201/001 Conductive additives
• CPC Class Codes: C08K 2201/011 Nanostructured additives
• CPC Class Codes: C08K 5/3435 Piperidines
• CPC Class Codes: C08K 5/3492 Triazines
• CPC Class Codes: C08K 9/10 Encapsulated ingredients
• CPC Class Codes: C08L 33/00 Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
• CPC Class Codes: C09D 5/22 Luminous paints luminescent compositions C09K11/00
• CPC Class Codes: C09D 5/24 Electrically-conducting paints conductive materials H01B1/00
• CPC Class Codes: C09D 7/48 Stabilisers against degradation by oxygen, light or heat
• CPC Class Codes: C09D 7/62 modified by treatment with other compounds
• CPC Class Codes: C09K 11/02 Use of particular materials as binders, particle coatings or suspension media therefor
• CPC Class Codes: C09K 11/025 non-luminescent particle coatings or suspension media
• CPC Class Codes: C09K 11/703 with zinc or cadmium
• CPC Class Codes: Y10S 977/83 Inorganic core or cluster coated with organic or biological shell
• CPC Class Codes: Y10S 977/834 Optical properties of nanomaterial, e.g. specified transparency, opacity, or index of refraction

Abstract

The present invention relates to a formulation comprising a medium, one or more stabilizers, and one or more particles comprising nanoparticles included within a host material. In certain embodiments, a stabilizer comprises a HALS stabilizer. In certain embodiments, a stabilizer comprises a UVA stabilizer. In certain embodiments, the formulation includes a HALS stabilizer and a UVA stabilizer. In certain embodiments, nanoparticles have light-emissive properties. Other embodiments relate to a powder obtainable from a formulation of the invention, a composition including a powder of the invention, a coating comprising a formulation of the invention, and products and applications including a particle of the invention. In preferred embodiments, a nanoparticle comprises a semiconductor nanocrystal. In certain embodiments, a host material comprises a polymer. In certain embodiments, a host material comprises an inorganic material. A raw batch formulation and particle obtainable therefrom is also disclosed.

Claims

1. A formulation comprising a medium, two or more stabilizers, and one or more particles comprising nanoparticles included within a host material, wherein at least a portion of the nanoparticles include a core comprising a first semiconductor material and a shell disposed over at least a portion of an outer surface of the core, the shell comprising a second semiconductor material, and wherein the two or more stabilizers include a HALS stabilizer and a UVA stabilizer.

2. A formulation in accordance with claim 1 wherein the particle has at least one dimension in the range from about 0.01 μ

m to about 100 μ

m.

3. A formulation in accordance with claim 1 wherein the particle includes at least about 0.001 weight percent nanoparticles.

4. A formulation in accordance with claim 1 wherein the particle includes from about 0.001 to about 25 weight percent nanoparticles.

5. A formulation in accordance with claim 1 wherein the host material comprises a polymer.

6. A formulation in accordance with claim 1 wherein the host material comprises a wax.

7. A formulation in accordance with claim 1 wherein at least a portion of the nanoparticles have light-emissive properties and wherein the host material is optically transparent.

8. A formulation in accordance with claim 7 wherein the host material is optically transparent to excitation light used to optically excite the nanoparticles.

9. A formulation in accordance with claim 7 wherein the host material is optically transparent to light emitted from the light-emissive nanoparticles.

10. A formulation in accordance with claim 7 wherein the host material is optically transparent to light emitted from the light-emissive nanoparticles.

11. A formulation in accordance with claim 1 wherein at least a portion of the nanoparticles includes one or more ligands attached to an outer surface thereof.

12. A powder comprising a formulation in accordance with claim 1 in a particulate form.

13. A powder in accordance with claim 12 wherein two or more populations of particles are included in the powder and wherein at least one population of particles includes nanoparticles that emit light at a wavelength that is distinct from that emitted by nanoparticles included in another population of particles.

14. A formulation in accordance with claim 1 wherein the medium comprises a liquid medium.

15. A formulation in accordance with claim 1 wherein the particles are present in the formulation in an amount of at least about 0.1 weight percent based on the weight of the medium.

16. A formulation in accordance with claim 1 wherein the particles are present in the formulation in an amount of at least about 0.1 to about 75 weight percent based on the weight of the medium.

17. A formulation in accordance with claim 1 wherein the particles are present in the formulation in an amount of at least about 0.1 to about 25 weight percent based on the weight of the medium.

18. A formulation in accordance with claim 1 wherein the particles are present in the formulation in an amount of at least about 0.1 to about 10 weight percent based on the weight of the medium.

19. A formulation in accordance with claim 1 wherein the particles are present in the formulation in an amount of at least about 0.1 to about 5 weight percent based on the weight of the medium.

20. A formulation in accordance with claim 1 wherein the medium comprises monomers, polymers, resins, and/or other film forming compositions.

21. A formulation in accordance with claim 1 wherein the formulation further includes one or more additives.

22. A formulation in accordance with claim 21 wherein the one or more additives comprise a colorant, a scatterer, a binder, a surfactant, and/or a mixture of one or more thereof.

23. A composition comprising a powder in accordance with claim 12.

24. A composition in accordance with claim 23 wherein the powder is dispersed in a second host material.

25. A composition in accordance with claim 24 wherein the second host material comprises a monomer.

26. A composition in accordance with claim 24 wherein the second host material comprises a resin.

27. A composition in accordance with claim 24 wherein the second host material comprises a polymer.

28. A formulation in accordance with claim 1 wherein the host material comprises polyacrylate.

29. A formulation in accordance with claim 1 wherein the host material comprises an inorganic material.

30. A formulation in accordance with claim 1 wherein the nanoparticles have light-emissive properties.

31. A formulation in accordance with claim 1 wherein the formulation includes the HALS stabilizer in an amount from about 0.1 to about 5 weight percent.

32. A formulation in accordance with claim 1 wherein the formulation includes the UVA stabilizer in an amount from about 0.1 to about 5 weight percent.

33. A formulation in accordance with claim 1 wherein the formulation includes the HALS stabilizer in an amount from about 0.1 to about 2 weight percent.

34. A formulation in accordance with claim 1 wherein the formulation includes the UVA stabilizer in an amount from about 0.1 to about 2 weight percent.

35. A formulation in accordance with claim 31 wherein the formulation includes the UVA stabilizer in an amount from about 0.1 to about 5 weight percent.

36. A formulation in accordance with claim 33 wherein the formulation includes the UVA stabilizer in an amount from about 0.1 to about 2 weight percent.