Light-emitting phosphor particles and electroluminescent devices employing same

1. A phosphor particle having a coating that comprises a light emitting polymer wherein the coating encapsulates the phosphor particle.

2. The phosphor particle of claim 1 wherein said light-emitting polymer is selected from the group consisting of poly(p-phenylene vinylene) and poly[2-methoxy-5-(2′-ethylhexyloxy)-1,4-phenylenevinylene].

3. The phosphor particle of claim 1 wherein said phosphor particle has a diameter of from about 0.3 microns to about 50 microns.

4. The phosphor particle of claim 1 wherein said phosphor particle has a diameter of from about 10 microns to about 40 microns.

5. An electroluminescent display device comprising the phosphor particle of claim 1 .

6. An electroluminescent display device comprising the phosphor particle of claim 2 .

7. The phosphor particle of claim 1 wherein the light-emitting polymer is selected from the group consisting of polypyridine, poly(p-phenylene vinylene), poly[2-methoxy-5-(2′-ethylhexyloxy)-1,4-phenylenevinylene], poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylene-vinylene], poly[(2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylene-vinylene)-alt-co-(4,4′-biphenylene-vinylene)], poly[(9,9-dioctyl-2,7-divinylenefluorenylene)-alt-co-(9,10-anthracene)], poly[(9,9-dioctyl-2,7-divinylenefluorenylene)-alt-co-(4,4′-biphenylene)], poly[{9,9-dioctyl-2,7-divinylenefluorenylene}-alt-co-{2-methoxy-5-(2-ethyl-hexyloxy)-1,4-phenylene}], poly[{9,9-dioctyl-2,7-bis(2-cyanovinylene-fluorenylene}-alt-co-{2-methoxy-5-(2-ethyl hexyloxy)-1,4-phenylene}], poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-(1-cyanovinylenephenylene)], poly[{9,9-dihexyl-2,7-bis(1-cyanovinylene)fluorenylene}-alt-co-{2,5-bis(N,N′-diphenylamino)-1,4-phenylene}], poly[{9-ethyl-3,6-bis(2-cyanovinylene)carbazolylene)}-alt-co-{2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylene}], poly[(9,9-di(2-ethylhexyl)-fluorenyl-2,7-diyl)-co-(N,N′-diphenyl)-N,N′-di-(p-butyl phenyl)-1,4-diaminobenzene], poly[2-(6-cyano-6-methylheptyloxy)-1,4-phenylene), poly[{9,9-dioctylfluorenyl-2,7-diyl}-co-{1,4-(2,5-dimethoxy)benzene}], poly[{9,9-dioctylfluorenyl-2,7-diyl}-co-{1,4-(2,5-dimethoxy)benzene}], poly[(9,9-dioctyifluorenyl-2,7-diyl)-co-(1,4-ethylenylbenzene)], poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(1,4-diphenylene-vinylene-2-methoxy-5-{2-ethylhexyloxy}-benzene)], poly[(9,9-dihexylfluorenyl-2,7-divinylenefluorenylene)], poly[(9,9-dihexyl-2,7-(2-cyanodivinylene)-fluorenylene)], poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(1,4-vinylenephenylene)], poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(1,4-vinylenephenylene)], poly(9,9-dioctylfluorenyl-2,7-diyl; poly(9,9-dihexylfluorenyl-2,7-diyl), poly[9,9-di-(2-ethylhexyl)-fluorenyl-2,7-diyl], poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(N,N′-diphenyl)-N,N′-di(p-butyloxyphenyl)-1,4-diaminobenzene)], poly[(9,9dioctylfluorenyl-2,7-diyl)-alt-co-(N,N′-diphenyl)-N,N′-di(p-butyloxy-phenyl)1,4-diaminobenzene)], poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(1,4-benzo-{2,1′,3}thiadiazole)], poly[(9,9-dihexylfluorenyl-2,7-diyl)-alt-co-(9,10-anthracene)], poly[(9,9-dioctylfluorenyl-2,7-diyl)-alt-co-(N,N′-bis{4-butylphenyl}-benzidine-N,N′-{1,4-diphenylene})], poly[(9,9-dihexylfluorenyl-2,7-diyl)-alt-co-(2-methoxy-5-{2-ethylhexyloxy}-1,4-phenylene)], poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(9,ethyl-3,6-carbazole)], poly[(9,9-dihexylfluorenyl-2,7-diyl)-alt-co-(9,ethyl-3,6-carbazole)], poly[(9,9-dihexylfluorenyl-2,7-diyl)-alt-co-(9,9′-spirobifluorene-2,7-diyl], poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(2,5-p-xylene)], poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(3,5-pyridine)], poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(1,4-phenylene)], poly[(9,9-dihexylfluorenyl-2,7diyl)-alt-co-(9,9-di-{5-pentanyl}-fluorenyl-2′,7′-diyl)], poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(6,6′{2,2′-bipyridine})], poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(6,6′-{2,2′:6′,2′-terpyridine})], poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(N,N′bis{p-butylphenyl}1,4-diamino phenylene)], poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-6,6′-(2,2′bipyridine)], and poly[(9,9-dioctylfluorenyl-2,7-diyl-co-6,6″-[2,2′:6′,2″-terpyridine])].

8. An electroluminescent display device comprising the phosphor particle of claim 7 .

9. The phosphor particle of claim 1 wherein the coating on said phosphor particles further comprises a light-emitting molecule and the coating encapulates said phosphor particle.

10. The phosphor particle of claim 9 , wherein the light-emitting small molecule is selected from the group consisting of 8-hydroxyquinoline, fluorescein, rhodamine, xanthene or substituted xanthene, substituted coumarin, substituted hydroxycoumarin, substituted or unsubstituted tetra-cyanoquinolines, ethidium bromide, propidium iodide, benzoxanthene yellow, bixbenzimide ((2′-[4-hydroxyphenyl]-5-[4-methyl-1-piperazinyl]-2,5′-bi-1H-benzimidazol), (2′-[4-ethoxyphenyl]-5-[4-methyl-1-piperazinyl]-2,5′-bi-1H-benzimidazol)), DAPI (4,6-diamidino-2-phenylindole), lithium tetra (2-methyl-8-hydroxyquinolinato)boron, tris(benzoylacetonato)mono(phenanthroline)europium(III), tris(2-phenylpyridine)iridium(III), tris(8-hydroxyquinolinato)gallium(III), tris(8-hydroxyquinolato) aluminum; tetra(2-methyl-8-hydroxyquinolato) boron, lithium salt, 4,4′-bis(9-ethyl-3-carbazovinylene)-1,1′-biphenyl, 9,10-di[(9-ethyl-3-carbazoyl)-vinylenyl)]-anthracene, 4,4′-bis(diphenylvinylenyl)-biphenyl, 1,4-bis(9-ethyl-3-carbazovinylene)-2-methoxy-5-(2-ethylhexyloxy)benzene, tris(benzoylacetonato)mono(phenanthroline) europium (III), tris(dibenzoylmethane)mono(phenanthroline) europium (III), tris(dibenzoylmethane)mono(5-aminophenanthroline)europium (III), tris(dinapthoylmethane)mono(phenanthroline) europium (III), tris(biphenoylmethane)mono(phenanthroline) europium (III), tris(dibenzoylmethane)mono(4,7-diphenylphenanthroline)europium (III), tris(dibenzoylmethane)mono(4,7-dimethylphenanthroline)europium (III), tris(dibenzoylmethane)mono(4,7-dihydroxyphenanthroline)europium (III), tris(dibenzoylmethane)mono(4,7-dihydroxyloxyphenanthroline)europium (III), lithium tetra(8-hydroxyquinolinato) boron, 4,4′-bis(9-ethyl-3-carbazovinylene)-1,1′-biphenyl, bis(8-hydroxyquinolinato)zinc, bis(2-methyl-8-hydroxyquinolinato)zinc, iridium (III) tris(2-phenylpyridine), tris(8-hydroxyquinoline)aluminum, and tris[1-phenyl-3-methyl-4-(2,2-dimethylpropan-1-oyl)-pyrazolin-5-one]-terbium.

11. An electroluminescent display device comprising the phosphor particle of claim 10 .

12. A method for fabricating an electroluminescent display device comprising:

a phosphor particle having a coating that comprises a light-emitting polymer wherein the coating encapsulates the phosphor particle;

formulating an ink by mixing the coated phosphor particles with at least one binder polymer;

depositing a conducting rear electrode onto a substrate in a pattern;

depositing said ink onto said rear electrode to form a layer;

optionally depositing a transparent hole transporting electrode onto said layer; and

depositing a front outlining electrode; and

depositing connection leads to the rear electrode and the front outlining electrode.

13. The method of claim 12 wherein said coated phosphor particles are encapsulated with a barrier coating.

14. The method of claim 12 which further comprises a dielectric layer.

15. The method of claim 12 wherein said light-emitting polymer is selected from the group consisting of polypyridine; poly(p-phenylene vinylene); poly[2-methoxy-5-(2′-ethylhexyloxy)-1,4-phenylenevinylene]; poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylene-vinylene]; poly[(2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylene-vinylene)-alt-co-(4,4′-biphenylene-vinylene)]; poly[(9,9-dioctyl-2,7-divinylenefluorenylene)-alt-co-(9,10-anthracene)]; poly[(9,9-dioctyl-2,7-divinylenefluorenylene)-alt-co-(4,4′-biphenylene)]; poly[{9,9-dioctyl-2,7-divinylene-fluorenylene}-alt-co-{2-methoxy-5-(2-ethyl-hexyloxy)-1,4-phenylene}]; poly[{9,9-dioctyl-2,7-bis(2-cyanovinylene-fluorenylene}-alt-co-{2-methoxy-5-(2-ethyl hexyloxy)-1,4-phenylene}]; poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-(1-cyanovinylenephenylene)]; poly[{9,9-dihexyl-2,7-bis(1-cyanovinylene)fluorenylene}-alt-co-{2,5-bis(N,N′-diphenylamino)-1,4-phenylene}]; poly[{9-ethyl-3,6-bis(2-cyanovinylene)carbazolylene)}-alt-co-{2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylene}]; poly[(9,9-di(2-ethylhexyl)-fluorenyl-2,7-diyl)-co-(N,N′-diphenyl)-N,N′-di-(p-butylphenyl)-1,4-diaminobenzene]; poly[2-(6-cyano-6-methylheptyloxy)-1,4-phenylene); poly[{9,9-dioctylfluorenyl-2,7-diyl}-co-{1,4-(2,5-dimethoxy)benzene}]; poly[{9,9-dioctylfluorenyl-2,7-diyl}-co-{1,4-(2,5-dimethoxy)benzene}]; poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(1,4-ethylenylbenzene)]; poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(1,4-diphenylene-vinylene-2-methoxy-5-{2-ethylhexyloxy}-benzene)]; poly[(9,9-dihexylfluorenyl-2,7-divinylenefluorenylene)]; poly[(9,9-dihexyl-2,7-(2-cyanodivinylene)-fluorenylene)]; poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(1,4-vinylenephenylene)]; poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(1,4-vinylenephenylene)]; poly(9,9-dioctylfluorenyl-2,7-diyl; poly(9,9-dihexylfluorenyl-2,7-diyl); poly[9,9-di-(2-ethylhexyl)-fluorenyl-2,7-diyl]; poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(N,N′-diphenyl)-N,N′-di(p-butyloxyphenyl)-1,4-diaminobenzene)]; poly[(9,9-dioctylfluorenyl-2,7-diyl)-alt-co-(N,N′-diphenyl)-N,N′-di(p-butyloxy-phenyl)1,4-deaminobenzene)]; poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(1,4-benzo-{2,1′,3}-thiadiazole)]; poly[(9,9-dihexylfluorenyl-2,7-diyl)-alt-co-(9,10-anthracene)]; poly[(9,9-dioctylfluorenyl-2,7-diyl)-alt-co-(N,N′-bis{4-butylphenyl}-benzidine-N,N′-{1,4-diphenylene})]; poly[(9,9-dihexylfluorenyl-2,7-diyl)-alt-co-(2-methoxy-5-{2-ethylhexyloxy}-1,4-phenylene)]; poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(9,ethyl-3,6-carbazole)]; poly[(9,9-dihexylfluorenyl-2,7-diyl)-alt-co-(9,ethyl-3,6-carbazole)]; poly[(9,9-dihexylfluorenyl-2,7-diyl)-alt-co-(9,9′-spirobifluorene-2,7-diyl]; poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(2,5-p-xylene)]; poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(3,5-pyridine)]; poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(1,4-phenylene)]; poly[(9,9-dihexylfluorenyl-2,7-diyl)-alt-co-(9,9-di-{5-pentanyl}-fluorenyl-2′,7′-diyl; poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(6,6′{2,2′-bipyridine})]; poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(6,6′-{2,2′:6′,2″-terpyridine})]; and poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(N,N′bis{p-butylphenyl}-1,4-diamino phenylene)], poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-6,6′-(2,2′bipyridine)], and poly[(9,9-dioctylfluorenyl-2,7-diyl-co-6,6″-[2,2′:6′,2″-terpyridine])].

16. The method of claim 12 wherein the coating on said phosphor particles further comprises a light-emitting small molecule.

17. The method of claim 16 wherein said small molecule is selected from the group consisting of 8-hydroxyquinoline, fluorescein, rhodamine, xanthene or substituted xanthene, substituted coumarin, substituted hydroxycoumarin, substituted or unsubstituted tetra-cyanoquinolines, ethidium bromide, propidium iodide, benzoxanthene yellow, bixbenzimide ((2′-[4-hydroxyphenyl]-5-[4-methyl-1-piperazinyl]-2,5′-bi-1H-benzimidazol) and (2′-[4-ethoxyphenyl]-5-[4-methyl-1-piperazinyl]-2,5′-bi-1H-benzimidazol)), DAPI (4,6-diamidino-2-phenylindole), lithium tetra (2-methyl-8-hydroxyquinolinato)boron, tris(benzoylacetonato)mono(phenanthroline)europium(III), tris(2-phenylpyridine)iridium(III), tris(8-hydroxyquinolinato)gallium(III), tris(8-hydroxyquinolato) aluminum; tetra(2-methyl-8-hydroxyquinolato) boron; lithium salt; 4,4′-bis(9-ethyl-3-carbazovinylene)-1,1′-biphenyl; 9,10-di[(9-ethyl-3-carbazoyl)-vinylenyl)]-anthracene; 4,4′-bis(diphenylvinylenyl)-biphenyl; 1,4-bis(9-ethyl-3-carbazovinylene)-2-methoxy-5-(2-ethylhexyloxy)benzene; tris(benzoylacetonato)mono(phenanthroline) europium (III); tris(dibenzoylmethane)mono(phenanthroline) europium (III); tris(dibenzoylmethane)mono(5-aminophenanthroline)europium(III); tris(dinapthoylmethane)mono(phenanthroline) europium (III); tris(biphenoylmethane)mono(phenanthroline) europium (III); tris(dibenzoylmethane)mono(4,7-diphenyl phenanthroline)europium (III); tris(dibenzoylmethane)mono(4,7-dimethyl-phenanthroline)europium (III); tris(dibenzoylmethane)mono(4,7-dihydroxy-phenanthroline)europium (III); tris(dibenzoylmethane)mono(4,7-dihydroxyloxy-phenanthroline)europium (III); lithium tetra(8-hydroxyquinolinato) boron; 4,4′-bis(9-ethyl-3-carbazovinylene)-1,1′-biphenyl; bis(8-hydroxyquinolinato)zinc; bis(2-methyl-8-hydroxyquinolinato)zinc; iridium (III) tris(2-phenylpyridine); tris(8-hydroxyquinoline)aluminum; and tris[1-phenyl-3-methyl-4-(2,2-dimethylpropan-1-oyl)-pyrazolin-5-one]-terbium.

18. A method of preparing a light-emitting substance coated phosphor particle, which comprises coating on a phosphor particle wherein the coating comprises a light-emitting polymer and a light-emitting small molecule and the coating encapulates the phoshor particle.

19. A method for fabricating an electroluminescent display device comprising:

formulating an ink by mixing phosphor particles with at least one binder polymer;

depositing a conducting rear electrode onto a substrate in a pattern;

depositing said ink onto said rear electrode to form a layer;

depositing a layer containing a light-emitting polymer onto said layer;

optionally depositing a transparent hole transporting electrode onto said layer; and

depositing a front outlining electrode; and

depositing connection leads to the rear electrode and the front outlining electrode.

20. The method of claim 19 wherein said layer containing the light-emitting polymer further comprises a light-emitting small molecule.

21. An electroluminescent display device comprising:

a phosphor particle having a coating comprising a light emitting polymer wherein the coating encapulates the phosphor particle;

an ink comprising said coated phosphor particles and at least one binder polymer;

a conducting rear electrode on a substrate in a pattern;

said ink deposited onto said rear electrode;

an optional transparent hole transporting electrode;

a front outlining electrode; and

connection leads to the rear electrode and the front outlining electrode.

22. The device of claim 21 wherein said coated phosphor particles are encapsulated with a barrier coating.

23. The device of claim 21 which further comprises a dielectric layer.

24. The device of claim 21 wherein the coating on the phosphor particle further comprises a light-emitting small molecule.

25. An electroluminescent display device comprising:

an ink formulated by mixing phosphor particles with at least one binder polymer;

a conducting rear electrode deposited onto a substrate in a pattern;

said ink deposited onto said rear electrode;

a layer containing a light-emitting polymer;

an optional transparent hole transporting electrode;

a front outlining electrode deposited onto said hole transporting electrode; and

connection leads to the rear electrode and the front outlining electrode.

26. The device of claim 25 wherein said phosphor particles are encapsulated with a barrier coating.

27. The device of claim 25 which further comprises a dielectric layer.

28. The device of claim 25 wherein the layer containing a light-emitting polymer further contains a light-emitting small molecule.

29. The device of claim 28 wherein said light-emitting small molecule is selected from the group consisting of 8-hydroxyquinoline, fluorescein, rhodamine, xanthene or substituted xanthene, substituted coumarin, substituted hydroxycoumarin, substituted or unsubstituted tetra-cyanoquinolines, ethidium bromide, propidium iodide, benzoxanthene yellow, bixbenzimide ((2′-[4-hydroxyphenyl]-5-[4-methyl-1-piperazinyl]-2,5′-bi-1H-benzimidazol), (2′-[4-ethoxyphenyl]-5-[4-methyl-1-piperazinyl]-2,5′-bi-1H-benzimidazol)), DAPI (4,6-diamidino-2-phenylindole), lithium tetra (2-methyl-8-hydroxyquinolinato)boron, tris(benzoylacetonato)mono(phenanthroline)europium(III), tris(2-phenylpyridine)iridium(III), tris(8-hydroxyquinolinato)gallium(III), tris(8-hydroxyquinolato) aluminum; tetra(2-methyl-8-hydroxyquinolato) boron, lithium salt, 4,4′-bis(9-ethyl-3-carbazovinylene)-1,1′-biphenyl, 9,10-di[(9-ethyl-3-carbazoyl)-vinylenyl)]-anthracene, 4,4′-bis(diphenylvinylenyl)-biphenyl, 1,4-bis(9-ethyl-3-carbazovinylene)-2-methoxy-5-(2-ethylhexyloxy)benzene, tris(benzoylacetonato)mono(phenanthroline) europium (III), tris(dibenzoylmethane)mono(phenanthroline) europium (III), tris(dibenzoylmethane)mono(5-aminophenanthroline)europium (III), tris(dinapthoylmethane)mono(phenanthroline) europium (III), tris(biphenoylmethane)mono(phenanthroline) europium (III), tris(dibenzoylmethane)mono(4,7-diphenylphenanthroline)europium (III), tris(dibenzoylmethane)mono(4,7-dimethylphenanthroline)europium (III), tris(dibenzoylmethane)mono(4,7-dihydroxyphenanthroline)europium (III), tris(dibenzoylmethane)mono(4,7-dihydroxyloxyphenanthroline)europium (III), lithium tetra(8-hydroxyquinolinato) boron, 4,4′-bis(9-ethyl-3-carbazovinylene)-1,1′-biphenyl, bis(8-hydroxyquinolinato)zinc, bis(2-methyl-8-hydroxyquinolinato)zinc, iridium (III) tris(2-phenylpyridine), tris(8-hydroxyquinoline)aluminum, and tris[1-phenyl-3-methyl-4-(2,2-dimethylpropan-1-oyl)-pyrazolin-5-one]-terbium.

30. The device of claim 21 wherein the light-emitting polymer is selected from the group consisting of polypyridine, poly(p-phenylene vinylene), poly[2-methoxy-5-(2′-ethylhexyloxy)-1,4-phenylenevinylene], poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylene-vinylene], poly[(2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylene-vinylene)-alt-co-(4,4′-biphenylene-vinylene)], poly[(9,9-dioctyl-2,7-divinylenefluorenylene)-alt-co-(9,10-anthracene)], poly[(9,9-dioctyl-2,7-divinylenefluorenylene)-alt-co-(4,4′-biphenylene)], poly[{9,9-dioctyl-2,7-divinylenefluorenylene}-alt-co-{2-methoxy-5-(2-ethyl-hexyloxy)-1,4-phenylene}], poly[{9,9-dioctyl-2,7-bis(2-cyanovinylene-fluorenylene}-alt-co-{2-methoxy-5-(2-ethyl hexyloxy)-1,4-phenylene}], poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-(1-cyanovinylenephenylene)], poly[{9,9-dihexyl-2,7-bis(1-cyanovinylene)fluorenylene}-alt-co-{2,5-bis(N,N′-diphenylamino)-1,4-phenylene}], poly[{9-ethyl-3,6-bis(2-cyanovinylene)carbazolylene)}-alt-co-{2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylene}], poly[(9,9-di(2-ethylhexyl)-fluorenyl-2,7-diyl)-co-(N,N′-diphenyl)-N,N′-di-(p-butyl phenyl)-1,4-diaminobenzene], poly[2-(6-cyano-6-methylheptyloxy)-1,4-phenylene), poly[{9,9-dioctylfluorenyl-2,7-diyl}-co- {1,4-(2,5-dimethoxy)benzene}], poly[{9,9-dioctylfluorenyl-2,7-diyl}-co-{1,4-(2,5-dimethoxy)benzene}], poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(1,4-ethylenylbenzene)], poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(1,4-diphenylene-vinylene-2-methoxy-5-{2-ethylhexyloxy}-benzene)], poly[(9,9-dihexylfluorenyl-2,7-divinylenefluorenylene)], poly[(9,9-dihexyl-2,7-(2-cyanodivinylene)-fluorenylene)], poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(1,4-vinylenephenylene)], poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(1,4-vinylenephenylene)], poly(9,9-dioctylfluorenyl-2,7-diyl; poly(9,9-dihexylfluorenyl-2,7-diyl), poly[9,9-di-(2-ethylhexyl)-fluorenyl-2,7-diyl], poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(N,N′-diphenyl)-N,N′-di(p-butyloxyphenyl)-1,4-diaminobenzene)], poly[(9,9-dioctylfluorenyl-2,7-diyl)-alt-co-(N,N′-diphenyl)-N,N′- di(p-butyloxy-phenyl)1,4-diaminobenzene)], poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(1,4-benzo-{2,1′,3}-thiadiazole)], poly[(9,9-dihexylfluorenyl-2,7-diyl)-alt-co-(9,10-anthracene)], poly[(9,9-dioctylfluorenyl-2,7-diyl)-alt-co-(N,N′-bis{4-butylphenyl}-benzidine-N,N′-{1,4-diphenylene})], poly[(9,9-dihexylfluorenyl-2,7-diyl)-alt-co-(2-methoxy-5-{2-ethylhexyloxyl-1,4-phenylene)], poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(9,ethyl-3,6-carbazole)], poly[(9,9-dihexylfluorenyl-2,7-diyl)-alt-co-(9,ethyl-3,6-carbazole)], poly[(9,9-dihexylfluorenyl-2,7-diyl)-alt-co-(9,9′-spirobifluorene-2,7-diyl], poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(2,5-p-xylene)], poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(3,5-pyridine)], poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(1,4-phenylene)], poly[(9,9-dihexylfluorenyl-2,7-diyl)-alt-co-(9,9-di-{5-pentanyl}-fluorenyl-2′,7′-diyl)], poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(6,6′2,2′-bipyridine})], poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(6,6′-{2,2′:6′,2″-terpyridine})], poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(N,N′bis{p-butylphenyl}-1,4-diamino phenylene)], poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-6,6′-(2,2′bipyridine)],and poly[(9,9-dioctylfluorenyl-2,7-diyl-co-6,6″-[2,2′:6′,2″-terpyridine])].

31. The device of claim 25 wherein said polymer is selected from the group consisting of polypyridine, poly(p-phenylene vinylene), poly[2-methoxy-5-(2′-ethylhexyloxy)-1,4-phenylenevinylene], poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylene-vinylene], poly[(2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylene-vinylene)-alt-co-(4,4′-biphenylene-vinylene)], poly[(9,9-dioctyl-2,7-divinylenefluorenylene)-alt-co-(9,10-anthracene)], poly[(9,9-dioctyl-2,7-divinylenefluorenylene)-alt-co-(4,4′-biphenylene)], poly[{9,9-dioctyl-2,7-divinylenefluorenylene}-alt-co-{2-methoxy-5-(2-ethyl-hexyloxy)-1,4-phenylene}], poly[{9,9-dioctyl-2,7-bis(2-cyanovinylene-fluorenylene}-alt-co-{2-methoxy-5-(2-ethyl hexyloxy)-1,4-phenylene}], poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-(1-cyanovinylenephenylene)], poly[{9,9-dihexyl-2,7-bis(1-cyanovinylene)fluorenylene}-alt-co-{2,5-bis(N,N′-diphenylamino)-1,4-phenylene}], poly[{9-ethyl-3,6-bis(2-cyanovinylene)carbazolylene)}-alt-co-{2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylene}], poly[(9,9-di(2-ethylhexyl)-fluorenyl-2,7-diyl)-co-(N,N′-diphenyl)-N,N′-di-(p-butyl phenyl)-1,4-diaminobenzene], poly[2-(6-cyano-6-methylheptyloxy)-1,4-phenylene), poly[{9,9-dioctylfluorenyl-2,7-diyl}-co-{1,4-(2,5-dimethoxy)benzene}], poly[{9,9-dioctylfluorenyl-2,7-diyl}-co-{1,4-(2,5-dimethoxy)benzene)}], poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(1,4-ethylenylbenzene)], poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(1,4-diphenylene-vinylene-2-methoxy -5-{2-ethylhexyloxy}-benzene)], poly[(9,9-dihexylfluorenyl-2,7-divinylenefluorenylene)], poly[(9,9-dihexyl-2,7-(2-cyanodivinylene)-fluorenylene)], poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(1,4-vinylenephenylene)], poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(1,4-vinylenephenylene)], poly(9,9-dioctylfluorenyl-2,7-diyl; poly(9,9-dihexylfluorenyl-2,7-diyl), poly[9,9-di-(2-ethylhexyl)-fluorenyl-2,7-diyl], poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(N,N′-diphenyl)-N,N′-di(p-butyloxyphenyl)-1,4-diaminobenzene)], poly[(9,9-dioctylfluorenyl-2,7-diyl)-alt-co-(N,N′-diphenyl)-N,N′-di(p-butyloxy-phenyl)1,4-diaminobenzene)], poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(1,4-benzo-{2,1′,3}-thiadiazole)], poly[(9,9-dihexylfluorenyl-2,7-diyl)-alt-co-(9,10-anthracene)], poly[(9,9-dioctylfluorenyl-2,7-diyl)-alt-co-(N,N′-bis{4-butylphenyl}-benzidine-N,N′-{1,4-diphenylene})], poly[(9,9-dihexylfluorenyl-2,7-diyl)-alt-co-(2-methoxy-5-{2-ethylhexyloxy}-1,4-phenylene)], poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(9,ethyl-3,6-carbazole)], poly[(9,9-dihexylfluorenyl-2,7-diyl)-alt-co-(9,ethyl-3,6-carbazole)], poly[(9,9-dihexylfluorenyl-2,7-diyl)-alt-co-(9,9′-spirobifluorene-2,7-diyl], poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(2,5-p-xylene)], poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(3,5-pyridine)], poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(1,4-phenylene)], poly[(9,9-dihexylfluorenyl-2,7-diyl)-alt-co-(9,9-di-{5-pentanyl}-fluorenyl-2′,7′-diyl)], poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(6,6′{2,2′-bipyridine})], poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(6,6′-{2,2′:6′,2″terpyridine})], poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(N,N′bis{p-butylphenyl}-1,4-diamino phenylene)], poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-6,6′-(2,2′bipyridine)], and poly[(9,9-dioctylfluorenyl-2,7-diyl-co-6,6″-[2,2′:6′,2″-terpyridine])].