Polydiazaacenes and electronic devices generated therefrom
View Patent ↗An electronic device, such as a thin film transistor, containing a polymer of the formula or structure wherein at least one of each R, R 1 , R 2 , R 3 , R 4 , R 5 and R 6 is independently hydrogen, alkyl, aryl, alkoxy, halogen, arylalkyl, cyano, or nitro; x and y represent the number of R substituents; a and b represent the number of rings; and n represents the number of repeating groups or moieties.
1. An electronic device comprising a semiconductive material of Formula (I)
wherein each R, R 1 , R 2 , R 3 , R 4 , R 5 and R 6 is independently selected from the group consisting of hydrogen, alkyl, aryl, alkoxy, halogen, arylalkyl, alkylaryl, cyano, or nitro; x and y represent the number of R substituents; a and b represent the number of rings; and n represents the number of repeating groups or moieties;
wherein at least one of R 1 and R 2 is not hydrogen;
wherein x, y, a, and b are independently from 0 to about 3; and
wherein n represents a number from 2 to about 5,000.
2. A device in accordance with claim 1 wherein n represents a number of from about 100 to about 1,000, or from about 10 to about 200.
3. A device in accordance with claim 1 wherein n represents a number of from about 20 to about 100.
4. A device in accordance with claim 1 wherein at least one of R, R 1 , R 2 , R 3 , R 4 , R 5 and R 6 is alkyl.
5. A device in accordance with claim 1 wherein at least one of R, R 1 , R 2 , R 3 , R 4 , R 5 and R 6 is aryl.
6. A device in accordance with claim 1 wherein at least one of R, R 1 , R 2 , R 3 , R 4 , R 5 and R 6 is nitro or cyano.
7. A device in accordance with claim 1 wherein at least one of R, R 1 , R 2 , R 3 , R 4 , R 5 and R 6 is selected from the group consisting of methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl, eicosanyl, phenyl, octylphenyl, dodecylphenyl, octoxyphenyl, and dodecyloxyphenyl.
8. A device in accordance with claim 1 wherein said semiconductive material is a polydiazaacene as represented by
wherein at least one of R 1 and R 2 is independently alkyl with from about 5 to about 20 carbon atoms; and n is from 2 to about 100.
9. A device in accordance with claim 8 wherein said alkyl is selected from the group consisting of pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl or octadecyl.
10. A device in accordance with claim 1 wherein at least one of R, R 1 , R 2 , R 3 , R 4 , R 5 and R 6 is aryl.
11. A device in accordance with claim 1 wherein at least one of R, R 1 , R 2 , R 3 , R 4 , R 5 and R 6 is alkylaryl or alkoxy.
12. A device in accordance with claim 1 wherein alkyl and alkoxy contain from about 1 to about 25 carbon atoms.
13. A device in accordance with claim 1 wherein aryl contains from 6 to about 48 carbon atoms.
14. A device in accordance with claim 1 wherein aryl contains from 6 to about 18 carbon atoms.
15. A thin film transistor comprising a substrate, a gate electrode, a gate dielectric layer, a source electrode and a drain electrode, and in contact with the source/drain electrodes and the gate dielectric layer a semiconductor layer comprised of a polydiazaacene of the formula
wherein each R, R 1 , R 2 , R 3 , R 4 , R 5 and R 6 is independently selected from the group consisting of hydrogen, alkyl, aryl, alkoxy, halogen, arylalkyl, alkylaryl, cyano, or nitro; x and y represent the number of R substituents; a and b represent the number of rings; and n represents the number of repeating groups or moieties;
wherein at least one of R 1 and R 2 is not hydrogen;
wherein a, b, x, and y are independently from 0 to about 3; and
wherein n represents a number from 2 to about 5,000.
16. A device in accordance with claim 15 wherein alkyl is selected from the group consisting of butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl, and eicosanyl; and n is from about 10 to about 100.
17. A device in accordance with claim 15 wherein said polydiazaacene is of the following alternative formulas
wherein R 1 and R 2 are independently alkyl, aryl or alkylaryl with from about 7 to about 26 carbon atoms; and n is from 2 to about 100.
18. A device in accordance with claim 17 wherein alkylaryl is selected from the group consisting of methylphenyl, ethylphenyl, propylphenyl, butylphenyl, pentylphenyl, hexylphenyl, heptylphenyl, octylphenyl, nonylphenyl, decylphenyl, undecylphenyl, dodecylphenyl, tridecylphenyl, tetradecylphenyl, pentadecylphenyl, hexadecylphenyl, heptadecylphenyl, and octadecylphenyl.
19. A device in accordance with claim 15 wherein said polydiazaacene is of the following formulas
wherein at least one of R 1 and R 2 is dodecylphenyl; and n is from 5 to about 50.
20. A device in accordance with claim 15 wherein said substrate is a plastic sheet of a polyester, a polycarbonate, or a polyimide; said gate source and drain electrodes are each independently comprised of silver, gold, nickel, aluminum, chromium, platinum, or indium titanium oxide, or a conductive polymer, and said gate dielectric layer is comprised of inorganic nitrides or oxides, or organic polymers, silicon nitride, silicon oxide.
21. A device in accordance with claim 15 wherein said substrate is glass or a plastic sheet; said gate, source and drain electrodes are each comprised of silver, gold, or chromium, and said gate dielectric layer is comprised of the poly(methacrylate), polysiloxane, or poly(vinyl phenol); and wherein said polydiazaacene is deposited by solution processes of spin coating, stamp printing, screen printing, or jet printing.
22. A device in accordance with claim 15 wherein alkoxy contains from 1 to about 25 carbon atoms.
23. A device in accordance with claim 15 wherein halogen is selected from the group consisting of chloride, fluoride, bromide and iodide.
24. A device in accordance with claim 15 wherein alkoxy is selected from the group consisting of methoxy, ethoxy, butoxy, propoxy, and pentoxy.
25. A device in accordance with claim 15 wherein aryl is phenyl, alkyl contains from 5 to about 18 carbon atoms, and n is from 10 to about 75.
26. A device in accordance with claim 15 wherein at least one of R to R 6 is alkyl with from 1 to about 20 carbon atoms, alkoxy with from 1 to about 20 carbon atoms, aryl with from 6 to about 36 carbon atoms, or alkylaryl with from 7 to about 37 carbon atoms; and n is an integer of from 10 to about 200.
27. An electronic device comprising a semiconductive material containing a polydiazaacene, and wherein said device is a thin film transistor and said polydiazaacene is selected from the group consisting of those of formulas/structures
wherein R 1 and R 2 are independently alkyl with from about 5 to about 20 carbon atoms, aryl with from about 6 to about 36 carbon atoms, or alkylaryl with from about 7 to about 26 carbon atoms; and n is from 2 to about 100.