Abstract: The application relates to an organic electroluminescent device which contains 2,5 diaminoterephthalic acid derivatives of formula 1a as emitter substances in one or several emitter layers in a pure or doped manner. The ring A is a triple unsaturated benzene ring wherein R4? and R8? are equal to zero or ring A is a double unsaturated ring respectively provided with a double bond in the 1,2 position and 4,5-position, and wherein R10 is a nitrile radical —CN or a radical C(?X1)—X2R1; R11 is a nitrile radical —CN or a radical —C(?X3)—X4R5, X1 and X3 are oxygen, sulphur or imino, X2 and X4 are oxygen, sulphur or optionally substituted amino, R1 to R8, R4? and R8? are H, C1–C20-alkyl, aryl, heteroaryl, R4 and R8 can also be halogen, nitro, cyanogen or amino, R2 to R4, R6–R8, R4? and R8? can also be trifluoromethyl or pentafluorophenyl, wherein certain radicals can form a saturated or unsaturated ring.

Abstract: The invention relates to an organic electroluminescent device which contains 2,5-diaminoterephthalic acid derivatives of formula 1a as emitter substances in one or several emitter layers in a pure or doped manner. The ring A is a triple unsaturated benzene ring wherein R4? and R8? are zero or ring A is a double unsaturated ring respectively provided with a double bond in the 1,2 position and 4,5 position, and wherein R10 is a nitrile radical —CN or a radical C(?X1)—X2R1, R11 is a nitrile radical —CN or a radical —C(?X3)—X4R5, X1 and X3 are oxygen, sulfur or imino, X2 and X4 are oxygen, sulfur or optionally substituted amino, R1–R8, R4? and R8? are H, C1–20-alkyl, aryl, heteroaryl, R4 and R8 can be halogen, nitro, cyanogen or amino, R2–R4, R6–R8, R4? and R8? can be trifluoromethyl or pentafluorophenyl, and wherein certain radicals can form a saturated or unsaturated ring.

Abstract: The invention concerns an electro-luminescent device in which the luminescent layer contains a compound of general formula I as doping agent or as luminescent compound, whereby the radicals R1 to R12 are identical or are different, and mean hydrogen, straight chain or branched C1-C6 alkyl, aralkyl, aryl or substituted aryl; R1 and R2 and/or R3 and R4 and/or R4 and R5 and/or R5 and R11 and/or R8 and R5 and/or R4 and R12 can form an alicyclic, heterocyclic or aromatic ring; R5 can furthermore be H, OH, OR9, N,N-di-(C1-C6) alkylamino, acetylamino or halogen; R6 and R7 together can form an alicyclic or heterocyclic ring; A1 and A2 are identical or different and are —CN, —NO2 or —COOR8; X is —CH, —CR11 or N; and Y is O, —NH, —NR12, S or Se. The doping agents together luminesce predominately red with very good quantum efficiency together with the luminescent compound as a function of concentration.

Abstract: The application relates to an organic electroluminescent device which contains 2,5 diaminoterephthalic acid derivatives of formula 1a as emitter substances in one or several emitter layers in a pure or doped manner. The ring A is a triple unsaturated benzole ring wherein R4? and R8? are equal to zero or ring A is a double unsaturated ring respectively provided with a double bond in the 1,2 position and 4,5-position, and wherein R10 is a nitrile radical —CN or a radical C(?X1)—X2R1; R11 is a nitrile radical —CN or a radical —C(?X3)—X4R5, X1 and X3 are oxygen, sulphur or imino, X2 and X4 are oxygen, sulphur or optionally substituted amino, R1 to R8, R4? and R8? are H, C1-C20-alkyl, aryl, heteroaryl, R4 and R8 can also be halogen, nitro, cyanogen or amino, R2 to R4, R6—R8, R4? and R8? can also be trifluoromethyl or pentafluorophenyl, and wherein certain radicals can form a saturated or unsaturated ring.

Abstract: The invention relates to an electroluminescent device, in which the luminescent layer contains a luminescent compound and a compound of the general formula I as doping agent, wherein B is an unsaturated carbocyclic or heterocyclic 4-8-link ring, which can also contain an alicyclic bridge, the rings D and E are five- or six-link rings, which each can contain one more hetero-atom N, O and S, the radicals R are one or more substituents H or straight-chain or branched C1-C6-alkyl, X and Y are carbon or nitrogen, R1; R2 and R9 are H or straight-chain or branched C1-C6-alkyl, R3 and R9 are hydrogen, straight-chain or branched C1-C6-alkyl, hydroxy, —OR16, —COOR16, N,N-dialkylamino, acetylamino or halogen, wherein R16 is hydrogen, or straight-chain or branched C1-C6-alkyl, R1 and R2 or R2 and R3 and/or R9 and R9 together can form an alicyclic, heterocyclic or aromatic ring, and A1 and A2, which can be the same or different, are cyan, nitro or —COOR16. The compounds I are partly new.

Abstract: The invention relates to an organic electroluminescent device which contains 2,5-diaminoterephthalic acid derivatives of formula 1a as emitter substances in one or several emitter layers in a pure or doped manner. The ring A is a triple unsaturated benzole ring wherein R4? and R8? are zero or ring A is a double unsaturated ring respectively provided with a double bond in the 1,2 position and 4,5 position, and wherein R10 is a nitrile radical —CN or a radical C(?X1)—X2R1, R11 is a nitrile radical —CN or a radical —C(?X3)—X4R5, X1 and X3 are oxygen, sulfur or imino, X2 and X4 are oxygen, sulfur or optionally substituted amino, R1-R8, R4? and R8 are H, C1-20-alkyl, aryl, heteroaryl, R4 and R8 can be halogen, nitro, cyanogen or amino, R2-R4, R6-R8, R4? and R8? can be trifluoromethyl or pentafluorophenyl, and wherein certain radicals can form a saturated or unsaturated ring.

Abstract: The invention relates to an electroluminescent device, in which the luminescent layer contains a luminescent compound and a compound of the general formula I as doping agent, wherein B is an unsaturated carbocyclic or heterocyclic 4-8-link ring, which can also contain an alicyclic bridge, the rings D and E are five- or six-link rings, which each can contain one more hetero-atom N, O and S, the radicals R are one or more substituents H or straight-chain or branched C1-C6-alkyl, X and Y are carbon or nitrogen, R1, R2 and R9 are H or straight-chain or branched C1-C6-alkyl, R3 and R8 are hydrogen, straight-chain or branched C1-C6-alkyl, hydroxy, -OR16, -COOR16, N,N-dialkylamino, acetylamino or halogen, wherein R16 is hydrogen, or straight-chain or branched C1-C6-alkyl, R1 and R2 or R2 and R3 and/or R8 and R9 together can form an alicyclic, heterocyclic or aromatic ring, and A1 and A2, which can be the same or different, are cyan, nitro or -COOR16. The compounds I are partly new.

Abstract: The invention concerns an electro-luminescent device in which the luminescent layer contains a compound of general formula I as doping agent or as luminescent compound, whereby the radicals R1 to R12 are identical or are different, and mean hydrogen, straight chain or branched C1-C6 alkyl, aralkyl, aryl or substituted aryl; R1 and R2 and/or R3 and R4 and/or R4 and R5 and/or R5 and R11 and/or R8 and R5 and/or R4 and R12 can form an alicyclic, heterocyclic or aromatic ring; R5 can furthermore be H, OH, OR9, N,N-di-(C1-C6) alkylamino, acetylamino or halogen; R6 and R7 together can form an alicyclic or heterocyclic ring; A1 and A2 are identical or different and are -CN, -NO2 or -COOR8; X is -CH, -CR11 or N; and Y is O, -NH, -NR12, S or Se. The doping agents together luminesce predominately red with very good quantum efficiency together with the luminescent compound as a function of concentration.