Claims
- 1. A process of producing a light-emitting block copolymer comprising the steps of:
polymerizing a first di(halo-methyl) aromatic monomer compound in the presence of an anionic initiator and a base to form a polymer; and contacting a second di(halo-methyl) aromatic monomer compound with the polymer to form the block copolymer.
- 2. The process of claim 1, wherein the base is potassium tert-butoxide.
- 3. The process of claim 1, wherein the anionic initiator is polyfunctional.
- 4. The process of claim 1, wherein the anionic initiator is chosen from a group consisting of a carbanion, aryl oxide, or alkoxide.
- 5. The process of claim 1, wherein the anionic initiator is chosen from a group consisting of 4-methoxyphenoxide, sulfonyldiphenol, p-methoxyphenol, bisphenol-A, and phloroglucinols.
- 6. The process of claim 1, further comprising the use of a solvent.
- 7. The process of claim 1, wherein the process is conducted at a reaction temperature of about 0 degrees Centigrade.
- 8. The process of claim 1, wherein the anionic initiator is present in about 2.5 mole %.
- 9. The process of claim 1, wherein the block copolymer has a polydispersity value of less than about 1.11.
- 10. The process of claim 1, wherein the first di(halo-methyl) aromatic compound or the second di(halo-methyl) aromatic compound have one or more electron-withdrawing group or electron-releasing group substituents.
- 11. The process of claim 1, wherein the first di(halo-methyl) aromatic compound and the second di(halo-methyl) aromatic compound contain one or more substituents.
- 12. The process of claim 11, wherein the substituents are chosen from a group consisting of OCH3, Si[(CH3)2C8H17], and OC8H17.
- 13. The process of claim 11, wherein the substituents are chosen from a group consisting of alkyl, aryl, alkoxy, aryloxy, halogen, nitrile, and combinations thereof.
- 14. The process of claim 1, wherein at least one of the monomers is poly(2-dimethyloctylsilyl)-phenylenevinylene (DMOS-PPV).
- 15. The process of claim 1, wherein at least one of the monomers is poly[1-methoxy-4-(2-ethylhexyloxy)]-phenylenevinylene (MEH-PPV).
- 16. The process of claim 1, wherein the first di(halo-methyl) aromatic monomer compound is DMOS-PPV and the second di(halo-methyl) aromatic monomer compound is MEH-PPV.
- 17. The process of claim 1, wherein the first di(halo-methyl) aromatic monomer compound is MEH-PPV and the second di(halo-methyl) aromatic monomer compound is DMOS-PPV.
- 18. A light-emitting block copolymer comprising one or more domains corresponding to two or more monomeric units, wherein the resulting copolymer has a polydispersity index of less than 1.5.
- 19. The light-emitting block copolymer of claim 18, wherein the monomeric units comprise di(halo-methyl)aromatic compounds.
- 20. The light-emitting block copolymer of claim 19, wherein the di(halo-methyl) aromatic monomer compounds have one or more substituents.
- 21. The light-emitting block copolymer of claim 20, wherein the substituents are chosen from OCH3, Si[(CH3)2C8H17], and OC8H17.
- 22. The light-emitting block copolymer of claim 18, wherein the light-emitting block copolymer exhibits less than or equal to 1% defects arising from head-to-head coupling.
- 23. The light-emitting block copolymer of claim 18, wherein the light-emitting block copolymer displays a polydispersity value of less than 1.11.
- 24. The light-emitting block copolymer of claim 18, wherein fractionation is not required to achieve the polydispersity value of less than 1.11.
- 25. The light-emitting block copolymer of claim 18, wherein the light-emitting block copolymer has a molecular weight greater than about 200,000.
- 26. The light-emitting block copolymer of claim 18, one or more of the domains comprises poly[l-methoxy-4-(2-ethylhexyloxy)]-phenylenevinylene (MEH-PPV).
- 27. The light-emitting block copolymer of claim 18, one or more of the domains comprises poly(2-demethyloctylsilyl)-phenylenevinylene (DMOS-PPV).
- 28. The light-emitting block copolymer of claim 18, two or more of the domains comprises DMOS-PPV and MEH-PPV.
- 29. An electroluminescent device comprising a light-emitting block copolymer further comprising one or more domains corresponding to two or more monomeric units, wherein the resulting copolymer has a polydispersity index of less than 1.5.
- 30. The electroluminescent device of claim 29, wherein the light-emitting block copolymer is a luminescent layer.
- 31. The electroluminescent device of claim 29, wherein the luminescent layer is cross-linked by one or both, including heat and irradiation.
- 32. The electroluminescent device of claim 29, wherein the luminescent layer is a blend of the light-emitting block copolymer of claim 29 with at least one macromolecule for general use.
- 33. The electroluminescent device of claim 29, wherein the macromolecule for general use is selected from the group including polyvinylcarbazole, polymethylmethacrylate, polyacrylate, polystyrene, polycarbonate, polyvinylchloride, polyethylene, polypropylene, polyacrylonitrile, polyvinylpyrrolidone, polyvinylalcohol, polyvinylacetate, polyvinylbutyral, polyvinylamine, polycaprolactone, polyethyleneterephthalate, polybutyleneterephthalate, polyurethane, acrylonitrilestyrenebutadiene (ABS), polysulfone, polyvinylfluoride, acetal, polyamide, polyimide, polyester, alkyd, urea, furan, nylon, melamine, phenol, silicone, and epoxy.
- 34. The electroluminescent device of claim 29, wherein the electroluminescent device is used in the manufacturing of optical and electrical devices.
Government Interests
[0001] The U.S. Government may own certain rights in this invention pursuant to the terms of Department of Energy grant H0506-0019-23.