| 主权项 |
1. A compound of formulae (IV), (V), or (VI) wherein R is on each occurrence, identically or differently, H, D, F, Cl, Br, I, N(R1)2, CN, NO2, Si(R1)3, B(OR1)2, C(═O)R1, P(═O)(R1)2, S(═O)R1, S(═O)2R1, OSO2R1, a straight-chain alkyl, alkoxy or thioalkoxy group having 1 to 40 C atoms or an alkenyl group having 2 to 40 C atoms or a branched or cyclic alkyl, alkoxy or thioalkoxy group having 3 to 40 C atoms, where the said groups may each be substituted by one or more radicals R1 and where one or more adjacent or non-adjacent CH2 groups may be replaced by R1C═CR1, 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, COO or CONR1, or an aromatic or heteroaromatic ring system having 5 to 60 aromatic ring atoms, which may in each case be substituted by one or more radicals R1, or an aryloxy or heteroaryloxy group having 5 to 60 aromatic ring atoms, which may be substituted by one or more radicals R1, or an aralkyl or heteroaralkyl group having 5 to 60 aromatic ring atoms, which may in each case be substituted by one or more radicals R1; two or more substituents R on the phenylene groups and/or on the naphthylene groups and/or on the substituents Ar here may be linked to one another and optionally form a mono- or polycyclic aliphatic or aromatic ring system; R1 is on each occurrence, identically or differently, H, D, F, Cl, Br, I, CN or an aliphatic, aromatic or heteroaromatic organic radical having 1 to 40 C atoms, in which, in addition, one or more H atoms may be replaced by D, F, Cl, Br, I, CN, OR2, SR2 or N(R2)2, where one or more adjacent or non-adjacent CH2 groups may be replaced by R2C═CR2, COO or CONR2; two or more adjacent or non-adjacent radicals R1 here may be linked to one another and optionally form a mono- or polycyclic, aliphatic or aromatic ring system; R2 is on each occurrence, identically or differently, H, D or an aliphatic, aromatic or heteroaromatic organic radical having 1 to 20 C atoms, in which, in addition, one or more H atoms may be replaced by D or F; two or more adjacent or non-adjacent radicals R2 here may be linked to one another and optionally form a mono- or polycyclic aliphatic or aromatic ring system; and Ar is on each occurrence, identically or differently, an aromatic or heteroaromatic ring system having 5 to 60 aromatic ring atoms, which is optionally substituted by one or more radicals R.
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