Heteroacene polymers and electronic devices generated therefrom
View Patent ↗An electronic device comprising a semiconductive material of Formula or structure (I) wherein each R 1 , R 2 , R 3 and R 4 are independently hydrogen (H), a heteroatom containing group, a suitable hydrocarbon, or a halogen; Ar and Ar′ each independently represents an aromatic moiety; x, y, a, b, c, d, e, f and g represent the number of groups or rings, respectively; Z represents sulfur, oxygen, selenium, or NR′″ wherein R′″ is hydrogen, alkyl, or aryl; and n represents the number of repeating units.
1. An electronic device comprising a semiconductive material of Formula (I):
wherein each R 1 , R 2 , R 3 and R 4 are independently hydrogen, a heteroatom containing group, alkyl, aryl, substituted alkyl, substituted aryl, alkylaryl, alkoxy, substituted alkoxy, or halogen; Ar and Ar′ each independently represents an aromatic moiety; Z represents sulfur, oxygen, selenium, or NR′″ wherein R′″ is hydrogen, alkyl, or aryl; x and y are independently from zero to about 12; a and b are independently from zero to about 4; c is from zero to about 10; d is from about 1 to about 10; e is from zero to about 4; f is from zero to about 6; g is from zero to about 10; and n represents the number of repeating units and is from about 2 to about 5,000.
2. A device in accordance with claim 1 wherein R′″ is alkyl.
3. A device in accordance with claim 1 wherein Ar and Ar′ are independently selected from the group consisting of the following structural units optionally substituted with a suitable hydrocarbon, a heteroatom containing group, or a halogen
wherein X is selected from the group consisting of C(R′R″), O, S, Se, NR, and Si(R′R″), and wherein R, R′, and R″ are independently selected from the group consisting of at least one of hydrogen, alkyl, and aryl; and Y is a carbon atom or a nitrogen atom.
4. A device in accordance with claim 1 wherein at least one of R 1 , R 2 , R 3 and R 4 is hydrogen.
5. A device in accordance with claim 1 wherein at least one of R 1 , R 2 , R 3 and R 4 is alkyl or aryl.
6. A device in accordance with claim 1 wherein at least one of R 1 , R 2 R 3 and R 4 is alkyl.
7. A device in accordance with claim 1 wherein at least one of R 1 , R 2 , R 3 and R 4 is aryl.
8. A device in accordance with claim 1 wherein at least one of R 1 , R 2 , R 2 , R 3 and R 4 is alkoxy.
9. A device in accordance with claim 1 wherein at least one of R 1 , R 2 , R 2 , R 3 and R 4 is halogen.
10. A device in accordance with claim 1 wherein at least one of R 1 and R 2 is nitro, cyano, dialkylamino, diarylamino, alkoxy, trialkylsilyl, or triarylsilyl.
11. A device in accordance with claim 1 wherein at least one of R 1 , R 2 , R 2 , R 3 and R 4 is alkyl with from about 1 to about 30 carbon atoms.
12. A device in accordance with claim 1 wherein at least one of R 1 , R 2 , R 2 , R 3 and R 4 is aryl with from about 6 to about 48 carbon atoms.
13. A device in accordance with claim 1 wherein at least one of R 1 , R 2 , R 2 , R 3 and R 4 is alkoxy with from about 1 to about 30 carbon atoms.
14. A device in accordance with claim 1 wherein at least one of R 1 , R 2 , R 2 , R 3 and R 4 is chloride, bromide, fluoride, or bromide.
15. A device in accordance with claim 1 wherein said heteroatom containing group contains from zero to about 36 carbon atoms.
16. A device in accordance with claim 1 wherein Z is sulfur or oxygen.
17. A device in accordance with claim 1 wherein Z is NR′″ wherein R′″ is aryl or alkyl containing from about 1 to about 25 carbon atoms.
18. A device in accordance with claim 1 wherein each x and y independently represents a number of from zero to about 4.
19. A device in accordance with claim 1 wherein a and b each independently represent a number of from zero to about 4, and wherein the sum of a and b is from zero to about 6.
20. A device in accordance with claim 1 wherein a and b each independently represent a number of from zero to about 2, and wherein the sum of a and b is from zero to about 4.
21. A device in accordance with claim 1 wherein c and f each independently represents a number of from zero to about 6, and wherein the sum of c and f is from zero to about 6.
22. A device in accordance with claim 1 wherein d and e each independently represent a number of from zero to about 4, and wherein the sum of d and e is from 1 to about 4.
23. A device in accordance with claim 1 wherein d and f each independently represent the number of from zero to about 2, and wherein the sum of d and f is from 1 to about 4.
24. A device in accordance with claim 1 wherein e is 1.
25. A device in accordance with claim 1 wherein n represents a number of from about 10 to about 100.
26. A device in accordance with claim 1 wherein n represents a number of repeating units from about 20 to about 100.
27. A thin film transistor comprised of 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 polymer of Formula (I):
wherein each R 1 , R 2 , R 3 and R 4 is independently hydrogen, a heteroatom containing group, alkyl, aryl, substituted alkyl, substituted aryl, alkylaryl, alkoxy, substituted alkoxy, or halogen; Ar and Ar′ each independently represents an aromatic moiety; Z represents sulfur, oxygen, selenium, or NR′″ wherein R′″ is hydrogen, alkyl, or aryl; x and y are independently from zero to about 12; a and b are independently from zero to about 4, c is from zero to about 10; d is from about 1 to about 10; e is from zero to about 4; f is from zero to about 6; g is from zero to about 10; and n represents the number of repeating units and is from about 2 to about 5,000.
28. A device in accordance with claim 27 wherein at least one of R 1 , R 2 , R 3 and R 4 is alkyl having from 4 to 20 carbon atoms.
29. A device in accordance with claim 27 wherein at least one of R 1 , R 2 , R 3 and R 4 is phenyl, tolyl, butylphenyl, pentylphenyl, hexylphenyl, heptylphenyl, octylphenyl, nonylphenyl, decylphenyl, undecylphenyl, dodecylphenyl, tridecylphenyl, tetradecylphenyl, pentadecylphenyl, hexadecylphenyl, heptadecylphenyl, or octadecylphenyl.
30. A device in accordance with claim 27 wherein at least one of R 1 , R 2 , R 3 and R 4 is alkoxy having from 1 to 20 carbon atoms, fluorine, chlorine, bromine, or iodine.
31. A device in accordance with claim 27 wherein said substrate is a plastic sheet of a polyester, a polycarbonate, or a polyimide; said gates, sources, and drain electrodes are each independently comprised of silver, gold, nickel, aluminum, chromium, platinum, or indium titanium oxide, or a conductive polymer; said gate dielectric layer is comprised of inorganic nitrides or oxides, or organic polymers, silicon nitride, silicon oxide; and wherein said semiconductor layer polymer is deposited by solution processes of spin coating, stamp printing, screen printing, or jet printing.
32. A thin film transistor in accordance with claim 27 wherein the field effect mobility is at least about 0.02 cm 2 /V.sec, and the current on/off ratio is at least 10 4 ; wherein the field effect mobility is at least 0.05 cm 2 /V.sec, and the current on/off ratio is equal to or greater than about 10 5 ; or wherein the field effect mobility is at least 0.1 cm 2 /V.sec, and the current on/off ratio is equal to or greater than about 10 6 .
33. A device in accordance with claim 27 wherein at least one of R 1 , R 2 , R 3 and R 4 is alkyl, aryl, substituted alkyl, substituted aryl, alkoxy or substituted alkoxy.
34. A device in accordance with claim 27 wherein the semiconductor layer polymer is poly(4,8-bis(3-dodecylthienylethynyl)benzo[1,2-b:4,5-b′]dithiophene) (1a); poly(5,11-bis(3-dodecylthienylethynyl)anthra[2,3-b:6,7-b′]dithiophene/5,11-bis(3-dodecylthienylethynyl)anthra[2,3-b:7,6-b′]dithiophene) (2a), or mixtures thereof.
35. A device in accordance with claim 27 wherein the semiconductor layer polymer is an ethynylene heteroacene polymer according to one of the following formulas:
36. A polymer of Formula(I):
wherein each R 1 , R 2 , R 3 and R 4 is independently hydrogen, a heteroatom containing group, alkyl, aryl, substituted alkyl, substituted aryl, alkylaryl, alkoxy, substituted alkoxy, or halogen; Ar and Ar′ each independently represents an aromatic moiety; Z represents sulfur, oxygen, selenium, or NR′″ wherein R′″ is hydrogen, alkyl, or aryl; x and y are independently from zero to about 12; a and b are independently from zero to about 4; c is from zero to about 10; d is from about 1 to about 10; e is from zero to about 4; f is from zero to about 6; g is from zero to about 10; and n represents the number of repeating units and is from about 2 to about 5,000.