Compound of the general formula: with p selected from: 1, 2, 3, 4 and 5, with Y, Y', Z and Z' each independently selected from: N, CH, C-F, C-CH 3, C-CF 3, C-C 2 H 5, C-C 3 H 8, C-OCH 3, C-OC 2 H 5, C-SCH 3, C-SC 2 H 5; and wherein the conjugated D 2 blocks are each independently selected from the group of the following structural units: with Y" selected from: N or CR g; with Z" selected from: N or CR h; with X" selected from: O, S, Se, Si(R i R j), P(R i), P R i; with V selected from: O, S, Se or NR k; with V' selected from: O, S, Se or NR k; with X 1 selected from: NR l, CR l R m; with W 1 to W 4 independently selected from: N, CR n; wherein the R g to R n radicals and the R 15 to R 34 radicals are each independently selected from the group of the radicals: H, halogen, CN, NR d R e wherein R d and R e are each independently selected from the group of the radicals: H, and cyclic or open-chain C 1 -C 20 -alkyl, wherein individual carbon atoms may be replaced by heteroatoms and wherein hydrogen atoms in the alkyl radical may be substituted, cyclic or open-chain C 1 -C 20 -O-alkyl, cyclic or open-chain C 1 -C 20 -S-alkyl, cyclic or open-chain C 2 -C 20 -alkenyl, cyclic or open-chain C 2 -C 20 -O-alkenyl, cyclic or open-chain C 2 -C 20 -S-alkenyl, cyclic or open-chain C 2 -C 20 -alkynyl, aryl, heteroaryl, wherein hydrogen atoms in the alkyl, O-alkyl, S-alkyl, alkenyl, O-alkenyl, S-alkenyl, alkynyl, aryl and heteroaryl radicals may each independently be substituted; and wherein the R g and R h radicals may be joined to one another in the form of a ring structure and wherein an aryl radical may be fused onto the ring structure, where any aryl radical fused to the ring structure may be substituted, wherein A 1 is selected from the group of the following radicals: and wherein A 2 is selected from the group of the following radicals: with p selected from: 1, 2, 3, 4 and 5, with Y, Y', Z and Z' each independently selected from: N, CH, C-F, C-CH 3, C-CF 3, C-C 2 H 5, C-C 3 H 8, C-OCH 3, C-OC 2 H 5, C-SCH 3, C-SC 2 H 5; and wherein the conjugated D 2 blocks are each independently selected from the group of the following structural units: with Y" selected from: N or CR g; with Z" selected from: N or CR h; with X" selected from: O, S, Se, Si(R i R j), P(R i), P R i; with V selected from: O, S, Se or NR k; with V' selected from: O, S, Se or NR k; with X 1 selected from: NR l, CR l R m; with W 1 to W 4 independently selected from: N, CR n; wherein the R g to R n radicals and the R 15 to R 34 radicals are each independently selected from the group of the radicals: H, halogen, CN, NR d R e wherein R d and R e are each independently selected from the group of the radicals: H, and cyclic or open-chain C 1 -C 20 -alkyl, wherein individual carbon atoms may be replaced by heteroatoms and wherein hydrogen atoms in the alkyl radical may be substituted, cyclic or open-chain C 1 -C 20 -O-alkyl, cyclic or open-chain C 1 -C 20 -S-alkyl, cyclic or open-chain C 2 -C 20 -alkenyl, cyclic or open-chain C 2 -C 20 -O-alkenyl, cyclic or open-chain C 2 -C 20 -S-alkenyl, cyclic or open-chain C 2 -C 20 -alkynyl, aryl, heteroaryl, wherein hydrogen atoms in the alkyl, O-alkyl, S-alkyl, alkenyl, O-alkenyl, S-alkenyl, alkynyl, aryl and heteroaryl radicals may each independently be substituted; and wherein the R g and R h radicals may be joined to one another in the form of a ring structure and wherein an aryl radical may be fused onto the ring structure, where any aryl radical fused to the ring structure may be substituted, wherein A 1 is selected from the group of the following radicals: and wherein A 2 is selected from the group of the following radicals: