An organic molecule comprising a structure of formula A
- wherein
- Y is independently selected from the group consisting of C, PR, S, and S(═O);
- W is independently selected from the group consisting of C(CN)2, NR, O, and S;
- X is selected from the group consisting of CR2, C═C(CN)2, NR, O, and S;
- Ar is a substituted aryl or heteroaryl group with 5 to 40 aromatic ring atoms, which is substituted with m same or different radicals R* and with n same or different donor groups D with electron-donating properties, wherein m+n equals the number of substitutable ring atoms and wherein D comprises a structure of formula I:
- wherein
- A and B are independently selected from the group consisting of CRR′, CR, NR, and N, wherein there is a single or a double bond between A and B and a single or a double bond between B and Z;
- Z is a direct bond or a divalent organic bridge group selected from the group consisting of a substituted or unsubstituted C1-C9-alkylene, C2-C8-alkenylene, C2-C8-alkynylene or arylene group or a combination of these, —CRR′, —C═CRR′, —C═NR, —NR—, —O—, —SiRR′—, —S—, —S(O)—, —S(O)2—, and O-interrupted substituted or unsubstituted C1-C9-alkylene, C2-C8-alkenylene, C2-C8-alkynylene or arylene groups, or phenyl or substituted phenyl units;
- wherein the waved line indicates the position over which D is bound to Ar;
- wherein each R*, R and R′ at each occurrence is the same or different H, deuterium, azide (N3+), F, Cl, Br, I, N(R2)2, CN, CF3, NO2, OH, COOH, COOR2, CO(NR2)2, Si(R2)3, B(OR2)2, C(═O)R2, P(═O)(R2)2, S(═O)R2, S(═O)2R2, OSO2R2, a linear alkyl, alkoxy or thioalkoxy group with 1 to 40 C-atoms or a linear alkenyl or alkynyl group with 2 to 40 C-atoms or a branched or cyclic alkyl, alkenyl, alkynyl, alkoxy or thioalkoxy group with 3 to 40 C-atoms, which each can be substituted by one or more radicals R2, wherein one or more not adjacent CH2-groups can be replaced by R2C═CR2, C≡C, Si(R2)2, Ge(R2)2, Sn(R2)2, C═O, C═S, C═Se, C═NR2, P(═O)(R2), SO, SO2, NR2, O, S or CONR2 and wherein one or more H-atoms can be replaced by deuterium, F, Cl, Br, I, CN, CF3 or NO2, or an aromatic or heteroaromatic ring system with 5 to 60 aromatic ring atoms, which each can be substituted by one or more radicals R2, or an aryloxy or heteroaryloxy group with 5 to 60 aromatic ring atoms, which can be substituted by one or more radicals R2, or a diarylamino group, diheteroarylamino group or arylheteroarylamino group with 10 to 40 aromatic ring atoms, which can be substituted by one or more radicals R2, or a combination of these systems, or a cross-linkable unit QE, whereby two or more of the substituents R and R′ can also form with each other a mono- or polycyclic, aliphatic, aromatic and/or benzoannulated ring system;
- R2 is at each occurrence is the same or different H, deuterium, F, Cl, Br, I, N(R3)2, CN, CF3, NO2, OH, COOH, COOR3, CO(NR3)2, Si(R3)3, B(OR3)2, C(═O)R3, P(═O)(R3)2, S(═O)R3, S(═O)2R3, OSO2R3, a linear alkyl, alkoxy or thioalkoxy group with 1 to 40 C-atoms or a linear alkenyl or alkynyl group with 2 to 40 C-atoms or a branched or cyclic alkyl, alkenyl, alkynyl, alkoxy or thioalkoxy group with 3 to 40 C-atoms, which each can be substituted by one or more radicals R3, wherein one or more not adjacent CH2-groups can be replaced by R3C═CR3, C≡C, Si(R3)2, Ge(R3)2, Sn(R3)2, C═O, C═S, C═Se, C═NR3, P(═O)(R3), SO, SO2, NR3, O, S or CONR3 and wherein one or more H-atoms can be replaced by deuterium, F, Cl, Br, I, CN, CF3 or NO2, or an aromatic or heteroaromatic ring system with 5 to 60 aromatic ring atoms, which each can be substituted by one or more radicals R3, or an aryloxy or heteroaryloxy group with 5 to 60 aromatic ring atoms, which can be substituted by one or more radicals R3, or a diarylamino group, diheteroarylamino group or arylheteroarylamino group with 10 to 40 aromatic ring atoms, which can be substituted by one or more radicals R3, or a combination of these systems;
- whereby two or more of these substituents R2 can also form with each other a mono- or polycyclic, aromatic and/or benzoannulated ring system;
- R3 is at each occurrence is the same or different H, deuterium, F, CF3 or an aliphatic, aromatic and/or heteroaromatic hydrocarbon radical with 1 to 20 C-atoms, in which one or more H-atoms can be replaced by F or CF3;
- whereby two or more substituents R3 can form with each other a mono- or polycyclic aliphatic ring system.