Multiphasic nano-components comprising colorants

• US 7,947,772 B2
• Filed: 06/11/2008
• Issued: 05/24/2011
• Est. Priority Date: 11/10/2004
• Status: Expired due to Fees

• Current Assignee: Board of Regents of the University of Michigan (University of Michigan)
• Original Assignee: Board of Regents of the University of Michigan (University of Michigan)
• Inventors: Martin, David C., Roh, Kyung-Ho, Lahann, Joerg
• Primary Examiner(s): SANDERS, KRIELLION ANTIONETTE
• Application Number:
  US12/137,121
• Publication Number:
  US 20080242774A1
• Time in Patent Office: 1,077 Days
• Field of Search: 524/99, 524/190, 524/431, 524/612, 524/413, 524/424, 524/430, 424/422, 252/301.36, 252/301.4 R, 252/301.6 S, 106/401, 106/436, 106/472, 106/474, 428/67, 428/457, 428/689, 428/690, 428/704
• US Class Current: 524/424
• CPC Class Codes: B05B 5/043 using induction-charging
• CPC Class Codes: B82Y 10/00 Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
• CPC Class Codes: B82Y 20/00 Nanooptics, e.g. quantum optics or photonic crystals
• CPC Class Codes: B82Y 30/00 Nanotechnology for materials or surface science, e.g. nanocomposites
• CPC Class Codes: C08J 3/005 Processes for mixing polymers
• CPC Class Codes: C08J 3/20 Compounding polymers with additives, e.g. colouring
• CPC Class Codes: C08J 3/205 in the presence of a continuous liquid phase
• CPC Class Codes: C09D 11/037 characterised by the pigment
• CPC Class Codes: C09D 11/322 Pigment inks
• CPC Class Codes: D01D 5/0007 Electro-spinning non-woven fabrics produced by electro-spinning D04H1/728
• CPC Class Codes: D01D 5/32 Side-by-side structure; Spinnerette packs therefor
• CPC Class Codes: D01D 5/34 Core-skin structure; Spinnerette packs therefor
• CPC Class Codes: D01F 1/06 Dyes
• CPC Class Codes: Y10T 428/22 Nonparticulate element embedded or inlaid in substrate and visible
• CPC Class Codes: Y10T 428/31678 Of metal

Abstract

Multiphasic colorant nano-components (MPCs) having at least two phases and at least one colorant are provided. In certain aspects, the at least two phases are optically or visually distinct from one another. The MPCs can be used in various methods in various applications, such as visual, optical, and/or electronic displays, including in paints, inks, coatings, plastics, textiles, electronic display devices, pixels, or electronic paper. The MPCs are formed by methods of electrified jetting of polymers.

Claims

1. A method of forming a nano-component comprising at least one colorant, the method comprising:

forming a composite stream by contacting a portion of a first liquid stream with a portion of a second liquid stream, wherein said first and second liquid streams are compositionally distinct from one another and at least one of said first and second liquid streams comprises a colorant; and

exposing at least a portion of the composite stream to an electric force field sufficient to form a solid nano-component comprising a first phase and a second distinct phase, wherein said first phase comprises material from said first liquid stream and said second phase comprises material from said second liquid stream, such that said first phase and said second phase are compositionally distinct from one another, wherein said first phase comprises a first colorant and said second phase comprises a second colorant distinct from said first colorant and at least one of said first phase and said second phase comprises a polymer or polymer precursor, thus forming a nano-component having optically distinct phases.

2. The method of claim 1, wherein said first phase has a first exposed surface and said second phase has a second exposed surface.

3. The method of claim 2, further comprising treating at least one of said first and/or second exposed surfaces after formation of said solid nano-component to modify the chemical or physical characteristics of said first and/or second exposed surfaces.

4. The method of claim 1, wherein said first phase is a continuous phase and said second phase is a discontinuous phase within the solid nano-component.

5. The method of claim 1, wherein said first phase comprises a first component that is incompatible with a second component present in said second phase.

6. The method of claim 1, wherein said forming of said composite stream further comprises contacting a portion of an additional liquid stream with said first and second liquid streams, wherein said additional liquid stream is compositionally distinct from said first liquid stream and said second liquid stream and said exposing of said composite stream to an electric force field forms said solid nano- component comprising said first phase, said second phase, and an additional phase comprising a material from said additional liquid stream, wherein said first phase, said second phase, and said third phase are each compositionally distinct from one another.

7. The method of claim 1, wherein said solid nano-component has a shape selected from the group consisting of:

spheres, rectangles, polygons, disks, ellipsoids, toroids, cones, pyramids, rods, cylinders, beads-on-a-string, and fibers.

8. The method of claim 1, wherein at least one of said first or second phases comprise a polymer selected from the group consisting of:

sodium polystyrene sulfonate (PSS), polyethers, polyethylene oxide (PEO), polyethylene imine (PEI), polylactic acid, polycaprolactone, polyglycolic acid, poly(lactide-co-glycolide) polymer (PLGA), polyvinylpyrrolidone, hydroxyl alkyl cellulose, hydroxypropyl methyl cellulose (HPMC), hydroxypropyl cellulose (HPC), hydroxyethyl cellulose (HEC), methyl cellulose (MC), carboxymethyl cellulose (CMC), vinyl acetate, polyvinylpyrrolidone-vinyl acetate copolymer, polyvinyl alcohol (PVA), polyacrylate, polyacrylic acid (PAA), vinylcaprolactam/sodium acrylate polymer, methacrylate, poly(acryl amide-co-acrylic acid) (PAAm-co-AA), vinyl acetate, crotonic acid copolymer, polyacrylamide, polyethylene phosphonate, polybutene phosphonate, polystyrenes, polyvinylphosphonates, polyalkylenes, carboxy vinyl polymer, cellulose acetate, cellulose nitrate, ethylene-vinyl acetate copolymers, vinyl acetate homopolymers, ethyl cellulose, butyl cellulose, isopropyl cellulose, shellac, siloxanes, polydimethylsiloxane, polymethyl methacrylate (PMMA), cellulose acetate phthalate, natural or synthetic rubber;

cellulose, polyethylene, polypropylene, polyesters, polyurethane, nylon, poly(aryleneethynylenes) (PAE), polythiophene, polyaniline, poly(p-phenylene), poly(p- phenyleneethynylene) (PPE), poly(p-phenylenevinylene), copolymers, derivatives, and mixtures thereof.

9. The method of claim 1, wherein at least one of said first phase or said second phase comprises a component reactive to a controllable external force field.

10. The method of claim 1, wherein at least one of said first phase and/or said second phase comprises a component and/or has an exposed surface that promotes self-assembly of the nano-component on a substrate.

11. The method of claim 1, wherein at least one of said first colorant or said second colorant comprises at least one material selected from a pearlescent pigment, a metallic flake pigment, a cholesteric liquid crystal (CLC) pigment, an ultramarine pigment, a fluorescent pigment, a phosphorescent pigment, an inorganic pigment, a carbon black pigment, a natural pigment, an organic pigment, a mixed metal oxide pigment, an iron oxide pigment, a titanium dioxide pigment, a metal colorant, a ceramic colorant, a plastic colorant, an organic azo pigment, an organic polycyclic pigment, a dyeing lake pigment, an azine pigment, a direct dye, a vat dye, a sulfur dye, a reactive dye, a disperse dye, an acid dye, an azoic dye, a synthetic dye, a basic dye, a laser dye, a polymeric dye, a natural dye, a fluorescent dye, and/or a phosphorescent dye.

12. A multiphasic nano-component comprising a first phase and at least one additional phase distinct from said first phase, wherein at least one of said first phase and said at least one additional phase comprises a polymer or polymer precursor and said first phase comprises a first colorant and said at least one additional phase comprises a second colorant distinct from said first colorant, thus forming a nano-component having optically distinct phases.

13. The multiphasic nano-component of claim 12, wherein said first phase and said at least one additional phase each have an exposed surface respectively, and said first phase has a first charge and said at least one additional phase has a second charge opposite to said first charge.

14. The multiphasic nano-component of claim 12, wherein said at least one additional phase further comprises a second phase and a third phase, wherein said first phase comprises a first dye, said second phase comprises a second dye, and said third phase comprises a third dye, wherein said first, second, and third dyes are distinct from one another.

15. The multiphasic nano-component of claim 14, wherein said first dye exhibits a red and/or orange color, said second dye exhibits a blue, cyan, indigo and/or violet color, and said third dye exhibits a yellow and/or green color, whereby the multiphasic nano-component emits a substantially white color.

16. The multiphasic nano-component of claim 12, wherein an amount of said first colorant present in said first phase in said nano-component is about 0.01% to about 90% by weight of the first phase and an amount of said second colorant present in said at least one additional phase is about 0.01% to about 90% by weight of the additional phase.

17. The multiphasic nano-component of claim 12, wherein said first phase comprises a first component that is incompatible with a second component present in said at least one additional phase.

18. The multiphasic nano-component of claim 12, wherein said solid nano-component has a shape selected from the group consisting of:

spheres, rectangles, polygons, disks, toroids, cones, pyramids, rods, cylinders, beads-on-a-string, and fibers.

19. The multiphasic nano-component of claim 12, wherein said nano-component has a core-in-shell morphology comprising said first phase in the form of an external shell surface and said at least one additional phase disposed within said external shell surface to form a core.

20. The multiphasic nano-component of claim 12, wherein at least one of said first phase or said second additional phase comprises a component reactive to a controllable external force field.

21. The multiphasic nano-component of claim 12, wherein at least one of said first and said second colorants comprises a material selected from:

a pearlescent pigment, a metallic flake pigment, a cholesteric liquid crystal (CLC) pigment, an ultramarine pigment, a fluorescent pigment, a phosphorescent pigment, an inorganic pigment, a carbon black pigment, a natural pigment, an organic pigment, a mixed metal oxide pigment, an iron oxide pigment, a titanium dioxide pigment, a metal colorant, a ceramic colorant, a plastic colorant, an organic azo pigment, an organic polycyclic pigment, a dyeing lake pigment, an azine pigment, a direct dye, a vat dye, a sulfur dye, a reactive dye, a disperse dye, an acid dye, an azoic dye, a synthetic dye, a basic dye, a laser dye, a polymeric dye, a natural dye, a fluorescent dye, and/or a phosphorescent dye.

22. The multiphasic nano-component of claim 12, wherein at least one of said first and second colorants comprises a material selected from a low-molecular weight dye, a laser dye, a textile dye, a paint dye, a paint pigment, a coating dye, a coating pigment, a plastic colorant, a metal colorant, a ceramic colorant, a fluorescent dye, a phosphorescent dye, a natural dye, a polymeric dye, an inorganic pigment and/or an organic pigment.

23. A multiphasic nano-component comprising a first phase and at least one additional phase distinct from said first phase, wherein at least one of said first phase and said at least one additional phase comprises a polymer or polymer precursor and wherein said first phase comprises a first colorant and said additional phase comprises a second colorant distinct from said first colorant and at least one of said first colorant and said second colorant comprise at least one material selected from a pearlescent pigment, a metallic flake pigment, a cholesteric liquid crystal (CLC) pigment, an ultramarine pigment, a fluorescent pigment, a phosphorescent pigment, an inorganic pigment, a carbon black pigment, a natural pigment, an organic pigment, a mixed metal oxide pigment, an iron oxide pigment, a titanium dioxide pigment, a metal colorant, a ceramic colorant, a plastic colorant, an organic azo pigment, an organic polycyclic pigment, a dyeing lake pigment, an azine pigment, a direct dye, a vat dye, a sulfur dye, a reactive dye, a disperse dye, an acid dye, an azoic dye, a synthetic dye, a basic dye, a laser dye, a polymeric dye, a natural dye, a fluorescent dye, and/or a phosphorescent dye, and wherein said first phase and said at least one additional phase each have an exposed surface and form a nano-component having optically distinct exposed surfaces.