Benzanthracene derivatives for organic electroluminescent devices

An uncharged compound of the formula (1)

• wherein the group Ar or Y is bonded via one of positions 2, 3, 4, 5 or 6 of the benz[a]anthracene and correspondingly no radical R is bonded at this position and where the following applies to the symbols and indices:
• Ar is on each occurrence, identically or differently, a divalent aromatic or heteroaromatic ring system having 5 to 40 aromatic ring atoms, which is optionally substituted by one or more radicals R;
• Y is a selected from the formula (25)-(31)
• wherein
• R is, identically or differently on each occurrence, H, D, F, Cl, Br, I, CHO, N(Ar1)2, N(R1)2, C(═O)Ar1, P(Ar1)2, P(═O)(Ar1)2, S(═O)Ar1, S(═O)2Ar1, CR1═CR1Ar1, CN, NO2, Si(R1)3, B(OAr1)2, B(OR1)2, OSO2R1, OH, a straight-chain alkyl or thioalkoxy group having 1 to 40 C atoms or a straight-chain alkoxy group having 2 to 40 C atoms or a branched or cyclic alkyl, alkoxy or thioalkoxy group having 3 to 40 C atoms, each of which is optionally substituted by one or more radicals R1, where one or more non-adjacent CH2 groups is optionally replaced by R1C═CR1, C≡C, Si(R1)2, Ge(R1)2, Sn(R1)2, C═O, C═S, C═Se, C═NR1, P(═O)(R1), SO, SO2, NR1, O, S or CONR1 and where one or more H atoms is optionally replaced by F, Cl, Br, I, CN or NO2, or an aromatic or heteroaromatic ring system having 5 to 60 aromatic ring atoms, which is optionally substituted by one or more non-aromatic radicals R, or an aryloxy or heteroaryloxy group having 5 to 60 aromatic ring atoms, which is optionally substituted by one or more non-aromatic radicals R, or a combination of these systems;
• two or more adjacent substituents R here optionally form a mono- or polycyclic aliphatic ring system with one another;
• wherein R in positions 7 and 12 of the benzanthracene is hydrogen;
• Ar1 is on each occurrence, identically or differently, an aromatic or heteroaromatic ring system having 5 to 30 aromatic ring atoms, which is optionally substituted by one or more non-aromatic radicals R;
• two radicals Ar1 which are bonded to the same nitrogen or phosphorus atom is optionally linked to one another here by a single bond or by a bridge selected from 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) and P(═O)R1;
• R1 is on each occurrence, identically or differently, H or an aliphatic, aromatic and/or heteroaromatic hydrocarbon radical having 1 to 20 C atoms, in which, in addition, one or more H atoms is optionally replaced by F;
• two or more adjacent substituents R1 here optionally form a mono- or polycyclic aliphatic or aromatic ring system with one another;
• Ar2 is an aryl or heteroaryl group having 5 to 16 aromatic ring atoms, each of which is optionally substituted by one or more radicals R1, or in formula (25) a group of the formula (32) or (33)
• Ar3 is, identically or differently on each occurrence, an aryl or heteroaryl group having 5 to 20 aromatic ring atoms or a triarylamine group having 15 to 30 aromatic ring atoms, each of which is optionally substituted by one or more radicals R1;
• E stands for a single bond, O, S, N(R1) or C(R1)2, where the two radicals R1 optionally forms a Spiro system through ring formation;
• q is 1, 2 or 3;
• s is on each occurrence, identically or differently, 0 or 1;
• m is on each occurrence, identically or differently 0 or 1;
• and
• n is 0;
• p is 0.