Carbonyl-functionalized thiophene compounds and related device structures

1. A semiconductor compound of the formula:

wherein R 1 is selected from H, alkyl, fluorosubstituted alkyl, aryl and fluorosubstituted aryl moieties, said alkyl and fluorosubstituted alkyl moieties ranging from C 2 to C 10 ; each said x is an integer independently ranging from 0 to 4; each of y and y′ is an integer independently selected from 0 and 1; z is an integer selected from 0 and integers greater than 0; and each said w is an integer independently selected from 0 and 1, wherein at least one of said x and z is 1, and at least one of y and y′ is 1.

2. The compound of claim 1 having the formula:

wherein R 1 is selected from alkyl, fluorosubstituted alkyl, phenyl and fluorosubstituted phenyl moieties, wherein w, x, y, y′, and z are as defined in claim 1 .

3. The compound of claim 2 , wherein each said x is 1, y is 1, z and y′ are 0, and each said w is 1.

4. The compound of claim 3 , wherein R 1 is selected from alkyl and perfluoroalkyl, said alkyl and fluorosubstituted alkyl moieties ranging from C 2 to C 10 .

5. The compound of claim 4 , wherein R 1 is selected from hexyl and perfluorohexyl.

6. The compound of claim 1 having the formula:

wherein each of x, y, and w is 1; z and y′ are 0, and R′ is selected from H and F.

7. The compound of claim 6 , wherein R′ is F.

8. The compound of claim 1 having the formula:

wherein each of x, y, and w is 1; z and y′ are 0, and R 1 is selected from alkyl, fluorosubstituted alkyl, phenyl and fluorosubstituted phenyl moieties, said alkyl and fluorosubstituted alkyl moieties ranging from C 2 to C 10 .

9. An organic field effect transistor device comprising a semiconductor component comprising one or more compounds of claim 1 .

10. An organic field effect transistor device comprising a semiconductor component fabricated with a composition comprising one or more compounds of claim 1 in a solvent and a polymer capable of enhancing the solubility of said one or more compounds in the solvent.

11. An organic field effect transistor device comprising a semiconductor component fabricated with a composition comprising a compound of claim 1 and a compound of the formula:

12. A compound of the formula

13. An organic field effect transistor device comprising a semiconductor component comprising the compound of claim 12 .

14. An organic field effect transistor device comprising a semiconductor component fabricated with a composition comprising the compound of claim 12 and a compound of the formula:

15. An organic field effect transistor device comprising a semiconductor component comprising a compound having the formula:

wherein R 1 is selected from H, alkyl, fluorosubstituted alkyl, aryl and fluorosubstituted aryl moieties, said alkyl and fluorosubstituted alkyl moieties ranging from C 2 to C 10 ; each said x is an integer independently ranging from 0 to 4; each of y and y′ is an integer independently selected from 0 and 1; z is an integer selected from 0 and integers greater than 0; and each said w is an integer independently selected from 0 and 1, wherein at least one of said x and z is 1, and at least one of y and y′ is 1.

16. The device of claim 15 , wherein each said x is 1, y is 1, z and y′ are 0, and each said w is 1.

17. The device of claim 16 , wherein R 1 is selected from alkyl and perfluoroalkyl, said alkyl and fluorosubstituted alkyl moieties ranging from C 2 to C 10 .

18. The device of claim 15 , wherein each of x, y, and w is 1; z and y′ are 0, and R 1 is selected from phenyl and fluorosubstituted phenyl moieties.

19. An organic field effect transistor device comprising a semiconductor component comprising a compound of claim 6 .

20. An organic field effect transistor device comprising a semiconductor component comprising a compound of claim 6 and a compound of the formula: