NOVELTY - Anthracene compounds (Q) are new, where in the anthracene units one or more unsubstituted carbon atoms are substituted by nitrogen.    USE - (Q) are useful in: an electronic device preferably an organic electroluminescent device, which is an organic LED and polymer LED, organic thin film transistor, organic light emitting transistor, organic integrated circuits, organic solar cell, organic field-quench devices, light emitting electrochemical cell, organic laser diode and organic photoreceptor; and a dimer, trimer, tetramer, pentamer, oligomer, polymer or dendrimer (all claimed). (Q) are also useful as: blue emitters; and hole injection and hole transport materials.    ADVANTAGE - (Q) exhibit high thermal stability, glass transition temperature with out decomposition, and narrower emission spectrum. (Q) provide displays with high quality and durability. (Q) can be operated in low voltage.    DETAILED DESCRIPTION - Anthracene compounds (Q) of formula (I) or (II) are new, where in the anthracene units one or more unsubstituted carbon atoms are substituted by nitrogen.    X = a bivalent bridge comprising B(R1), C(R1)2, Si(R1)2, C=O, C=NR1, C=C(R1)2, O, S, S=O, SO2, N(R1), P(R1) or P(O)R1;    Ar1 = 6-40C-aryl or 2-40C-heteroaryl, which is optionally substituted by one or more R2 (preferably benzene, naphthalene, thiophene, pyrrole, furan, pyridine, pyrimidine, pyrazine, pyridazine, quinoline, quinoxaline, benzothiophene, indole or benzofuran); either    R1 = H, F, Cl, Br, I, CHO, N(Ar2)2, C(=O)Ar2, P(=O)(Ar2)2, S(=O)Ar2, S(=O)2Ar2, CR3=CR3Ar2, CN, NO2, Si(R3)3, B(OR3)2, OSO2R3, linear 1-40C-alkyl, 1-40C-alkoxy or 1-40C-thioalkoxy groups, branched or cyclic 3-40C-alkyl, 3-40C-alkoxy or 3-40C-thioalkoxy groups (which is optionally substituted by one or more R3, where: one or more non-adjacent CH2 groups are substituted by Si(R3)2, Ge(R3)2, Sn(R3)2, C=O, C=S, C=Se, C=NR2, P(=O)(R3), SO, SO2, NR3, O, S or CONR3 and one or more H atoms are substituted by F, Cl, Br, I, CN or NO2), or an aromatic or heteroaromatic 5-40 ring systems (which is optionally substituted by one or more R2), and/or an aryloxy- or heteroaryloxy group with 5-40 aromatic ring atoms (which is substituted by one or more R2); or    2 or more adjacent R1 = a mono- or poly-cyclic, aliphatic or aromatic ring system;    R = R1, provided that at least one substituent R is not equal to H;    Ar2 = aromatic or heteroaromatic with 5-30 aromatic ring atoms substituted with one or more R2, where at the same time 2 Ar1 is connected to N or P by a single bond or a bridge consisting of B(R3), C(R3), Si(R3)2, C=O, C=NR3, C=C(R3)2, O, S, S=O, SO2, N(R3), P(R3) or P(=O)R3; either    R2 = H, F, Cl, Br, I, CHO, N(Ar2)2, C(=O)Ar2, P(=O)(Ar2)2, S(=O)Ar2, S(=O)2Ar2, CR3=CR3Ar2, CN, NO2, Si(R3)3, B(OR3)2, OSO2R3, linear 1-40C-alkyl, 1-40C-alkoxy or 1-40C-thioalkoxy group and/or branched or cyclic 3-40C-alkyl, 3-40C-alkoxy or 3-40C-thioalkoxy group (which is optionally substituted by one or more R3, where one or more non-adjacent CH2-groups are substituted by Si(R3)2, Ge(R3)2, Sn(R3)2, C=O, C=S, C=Se, C=NR2, B(=O)(R3), SO, SO2, NR3, O, S or CONR3 and one or more H atoms are substituted by F, Cl, Br, I, CN or NO2); or    2 or more R2 = a mono- or polycyclic, aliphatic or aromatic ring system;    R3 = H, F or an aliphatic, aromatic and/or heteroaromatic 1-20C hydrocarbon (in which H atoms are optionally substituted by F);    m = 1-3; and    n = 0 or 2.    INDEPENDENT CLAIMS are included for:    (1) the preparation of (Q);    (2) a dimer, trimer, tetramer, pentamer, oligomer, polymer or dendrimer comprising (I), where the residue R, R1 or R2 is a bond between the compound (I) and/or (II) to the dimer, trimer, tetramer and/or pentamer and/or to the polymer, oligomer or dendrimer; and    (3) an electronic device, preferably an organic electroluminescent device, which is an organic LED and polymer LED, organic thin film transistor, organic light emitting transistor, organic integrated circuits, organic solar cell, organic field quench devices, light emitting electrochemical cell, organic laser diode and organic photoreceptor, comprising (I).