Quantum dot films utilizing multi-phase resins
Multi-phase polymer films containing quantum dots (QDs) are described herein. The films have domains of primarily hydrophobic polymer and domains of primarily hydrophilic polymer. QDs, being generally more stable within a hydrophobic matrix, are dispersed primarily within the hydrophobic domains of the films. The hydrophilic domains tend to be effective at excluding oxygen.
1. A method of preparing a film, the method comprising:
dispersing a population of quantum dots in a first resin to form a quantum dot dispersion;
mixing the quantum dot dispersion in a second resin to form an emulsion comprising the quantum dot dispersion suspended in the second resin;
depositing the emulsion between gas barrier sheets to form a film; and
curing the first resin and the second resin to form a solid film.
2. The method of claim 1 , wherein the first resin is a resin monomer.
3. The method of claim 2 , wherein the wherein the resin monomer is selected from the group consisting of methyl(meth)acrylate, ethyl(meth)acrylate, n-propyl(meth)acrylate, butyl(meth)acrylate, n-pentyl(meth)acrylate, n-hexyl(meth)acrylate, cyclohexyl(meth)acrylate, 2-ethyl hexyl(meth)acrylate, octyl(meth)acrylate, isooctyl(meth)acrylate, n-decyl(meth)acrylate, isodecyl(meth)acrylate, lauryl(meth)acrylate, hexadecyl(meth)acrylate, octadecyl(meth)acrylate, isobornyl(meth)acrylate, isobutylene, styrene, divinyl benzene, vinyl acetate, isoprene, carbonate, acrylonitrile, a hydrophobic cellulose, a silicone monomer, dimethyl siloxane, vinyl ether, and polyester precursors.
4. The method of claim 2 , wherein the resin monomer further comprises a crosslinker.
5. The method of claim 4 , wherein resin monomer is lauryl methacrylate and the crosslinker is trimethylolpropane trimethacrylate.
6. The method of claim 2 , wherein the resin monomer is lauryl methacrylate and the second resin is an epoxy-based resin or a polyurethane acrylate resin.
7. The method of claim 1 , wherein the second resin is curable using ultraviolet (UV) light.
8. The method of claim 1 , wherein the second resin is selected from the group consisting of an epoxy-based resin, a polyurethane-based resin, a hydrophilic (meth)acrylate, a polyvinyl alcohol, a poly(ethylene-co-vinyl alcohol), a polyvinyl dichloride, a silicone, a polyimide, a polyester, a polyvinyl, a polyamide, an enphenolic, a cyanoacrylate, gelatin, a sodium silicate, and a poly(vinylpyrrolidone) (PVP).
9. The method of claim 1 , wherein the emulsion further comprises one or more of a photoinitiator, a cross-linking agent, a polymerization catalyst, a surfactant and an emulsifying agent.
10. The method of claim 1 , wherein the first resin is a resin polymer.
11. The method of claim 10 , wherein the resin polymer is selected from the group consisting of a poly(methyl(meth)acrylate), a poly(ethyl(meth)acrylate), a poly(n-propyl(meth)acrylate), a poly(butyl(meth)acrylate), a poly(n-pentyl(meth)acrylate), a poly(n-hexyl(meth)acrylate), a poly(cyclohexyl(meth)acrylate), a poly(2-ethyl hexyl(meth)acrylate), a poly(octyl(meth)acrylate), a poly(isooctyl(meth)acrylate), a poly(n-decyl(meth)acrylate), a poly(isodecyl(meth)acrylate), a poly(lauryl(meth)acrylate), a poly(hexadecyl(meth)acrylate), a poly(octadecyl(meth)acrylate), a poly(isobornyl(meth)acrylate), a poly(isobutylene), a polystyrene, a poly(divinyl benzene), a polyvinyl acetate, a polyisoprene, a polycarbonate, a polyacrylonitrile, a hydrophobic cellulose based polymer, a silicone resin, a poly(dimethyl siloxane), a poly(vinyl ether), and a polyester.
12. The method of claim 11 , wherein the resin polymer is a poly(lauryl(meth)acrylate).
13. The method of claim 1 , wherein the second resin is a resin monomer.
14. The method of claim 13 , wherein the resin monomer is glycidyl methacrylate, the glycidyl methacrylate dissolved in polyvinylidene chloride.
15. The method of claim 1 , wherein the second resin is a resin polymer.
16. The method of claim 2 , wherein the second resin is a resin monomer.
17. The method of claim 10 , wherein the second resin is a resin monomer.
18. The method of claim 2 , wherein the second resin is a resin polymer.
19. The method of claim 10 , wherein the second resin is a resin polymer.