Thiophene electronic devices
An electronic device, such as a thin film transistor, containing a semiconductor of Formula/Structure (I) wherein each R′ is independently at least one of hydrogen, and a suitable hydrocarbon; Ar is an aryl, inclusive of heteroaryl substituents; and M represents at least one thiophene based conjugated segment.
1. An electronic device comprising a semiconductor, wherein said semiconductor comprises a compound selected from Formulas (2), (3) and (5) to (15):
wherein R′ is independently selected from hydrogen, alkyl, substituted alkyl, alkoxy, substituted alkoxy, aryl, and substituted aryl; R is selected from alkyl, substituted alkyl, alkoxy, substituted alkoxy, aryl, substituted aryl, halogen, and hydrogen; m and n represent the number of substituents; Ar is aryl; and x, y, and z represent the number of repeating units.
2. A device in accordance with claim 1 wherein said alkyl contains from 1 to about 35 carbon atoms, said alkoxy contains from 1 to about 25 carbon atoms, and said aryl contains from 6 to about 42 carbon atoms.
3. A device in accordance with claim 1 wherein said alkyl contains from 1 to about 12 carbon atoms, said alkoxy contains from 1 to about 10 carbon atoms, and said aryl contains from 6 to about 18 carbon atoms.
4. A device in accordance with claim 1 wherein said alkyl contains from 1 to 18 carbon atoms; said alkoxy contains from 1 to 18 carbon atoms; and said aryl is phenyl, naphthyl, methylphenyl (tolyl), ethylphenyl, propylphenyl, butylphenyl, pentylphenyl, hexylphenyl, heptyiphenyl, octylphenyl, nonylphenyl, decylphenyl, undecyiphenyl, dodecylphenyl, tridecylphenyl, tetradecylphenyl, pentadecylphenyl, hexadecylphenyl, heptadecylphenyl, octadecylphenyl, or halophenyl.
5. A device in accordance with claim 1 wherein m is zero (0), 1, 2, or 3; and n is 1, 2, 3,or 4.
6. A device in accordance with claim 1 wherein m is 1, 2, or 3, and n is 1, 2, 3, or 4.
7. A device in accordance with claim 1 wherein m is 1, and n is 1 or 2.
8. An electronic device comprising a semiconductor, wherein the semiconductor comprises a compound selected from Formulas (a) through (r);
wherein R″, R′″, and R″″ are independently selected from alkyl having from 1 to about 35 carbon atoms, substituted alkyl having from 1 to about 35 carbon atoms, perfluoroalkyl having from 1 to 12 carbon atoms, alkoxy having from 1 to 18 carbon atoms, and alkoxy having from 1 to 18 carbon atoms.
9. The device of claim 8 , wherein the device is a thin film transistor comprising a substrate, a gate electrode, a gate dielectric layer, a source electrode, a drain electrode, and a semiconducting layer containing the semiconductor; 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, or silicon oxide.
10. The device of claim 9 , wherein said semiconductor layer is deposited by solution processes of spin coating, stamp printing, screen printing, jet printing, or deposited by vacuum deposition.
11. A device in accordance with claim 9 further including in said semiconductor layer at least one of a binder resin and a dispersing agent.
12. A device in accordance with claim 11 wherein said binder resin is at least one of an oligomer and a polymer of poly(vinyl butyral), polyesters, polycarbonates, poly(vinyl chloride), polyacrylates and methacrylates, copolymers of vinyl chloride and vinyl acetate, phenoxy resins, polyurethanes, poly(vinyl alcohol), polyacrylonitrile, and polystyrene.
13. A device in accordance with claim 11 wherein said dispersing agent is at least one of a nonionic component of ethoxylated alcohols, glyceryl stearate and alkanolamides; an anionic component of sodium lauryl sulfate, alkylnaphthalene sulfonates, and aliphatic-based phosphate esters; a cationic component of trimethyl cetyl ammonium chloride, oleic imidazoline, and ethoxylated fatty amines; or an amphoteric surfactant of lecithin, and polyglycol ether derivatives.
14. An electronic device comprising a semiconductor, wherein said semiconductor comprises a compound of formula (4):
wherein R′ is independently selected from hydrogen, alkyl, substituted alkyl, alkoxy, substituted alkoxy, aryl, and substituted aryl; R is selected from alkyl, substituted alkyl, alkoxy, substituted alkoxy, aryl, substituted aryl, halogen, and hydrogen; m and n represent the number of substituents, where m is 0 or 1, and n is 0, 1, or 2; Ar is aryl; and x, y, and z represent the number of repeating units, where x is a number from 1 to 6, y is a number from 0 to 4, and z is a number from 1 to 3.