Patent ID: 8481736

Claim:
A n-semiconductor for organic field-effect transistors or solar cells comprising compounds of the general formula (I): wherein the R 11 , R 12 , R 13 , R 14 , R 21 , R 22 , R 23 , R 24 , R 31 , R 32 , R 33 , R 34 , R 41 , R 42 , R 43 , and R 44 radicals are each independently selected from hydrogen, F, Cl, and Br; the R c and R d radicals are each independently selected from groups of the formulae (II.1) to (II.5): in which # represents the bonding site to the imide nitrogen atom, p is 0 or 1, x is 2 or 3, A where present, is a C 1 -C 10 -alkylene group which may be interrupted by one or more nonadjacent groups which are selected from —O— and —S—, where, in the case that x in the compounds of the formula (II.1) is 2, the carbon atom which bears the R i radicals additionally bears a hydrogen atom, and where x in the compounds of the formula (II.5) is 2, and the R i radicals are each independently selected from C 4 -C 30 -alkyl which may be interrupted by one or more nonadjacent oxygen atom(s), where at least one of the R i radicals in the compounds of the formula (II.1) may also be C 4 -C 30 -alkyloxy or C 4 -C 30 -alkylthio.