Carbonyl-functionalized thiophene compounds and related device structures

1. A semiconductor compound of a formula

wherein R 1 is selected from fluorosubstituted alkyl, heterocyclic, aryl and fluorosubstituted aryl moieties, said fluorosubstituted alkyl moieties ranging from C 2 to C 10 ; R 2 and R 3 are independently selected from H, alkyl, fluorosubstituted alkyl, heterocyclic, 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 8; y is an integer selected from 2 and integers greater than 2; and z is an integer selected from 0 and integers greater than 0.

2. The compound of claim 1 wherein each said x and z are 0, and y is an integer ranging from 4 to 8.

3. The compound of claim 1 wherein R 1 is selected from perfluoroalkyl, phenyl and perfluorophenyl moieties.

4. The compound of claim 3 wherein each said x and z are 0, and y is an integer ranging from 4 to 8.

5. A compound selected from

6. A semiconductor component of an electronic device incorporating one or more compounds of claim 1 .

7. The semiconductor component of claim 6 , wherein said component comprises a composition comprising one or more compounds of claim 1 and a polymer enhancing solubility of said one or more compounds in a solvent.

8. The compound of claim 5 selected from

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

10. The device of claim 9 wherein said semiconductor component comprises at least one compound exhibiting hole and electron mobilities under device operation conditions.

11. The device of claim 9 wherein said semiconductor component is fabricated with a composition comprising at least one of said compounds and a polymer enhancing solvent solubility of said compounds.

12. The device of claim 9 comprising a semiconductor component comprising at least one said compound exhibiting hole mobility and at least one said compound exhibiting electron mobility, under device operation conditions.

13. An organic field effect transistor device comprising a semiconductor component comprising one or more compounds selected from:

14. The organic field effect transistor device of claim 13 comprising a semiconductor component comprising one or more compounds selected from