NOVELTY - Substituted arylamine compounds (I) excluding bis-biphenyl-2-yl-p-tolyl-amine, bis-biphenyl-2-yl-(4'-methyl-biphenyl-4-yl)-amine and bis-biphenyl-2-yl-(4'-ethyl-biphenyl-4-yl)-amine, are new.    USE - (I) or the polymers, oligomers or the dendrimers are useful as a hole transport material in a hole transport-, hole injection- or electron blocking layer, and as a matrix material in combination with at least one fluorescent or phosphorescent dopant, in an emitting layer of electronic devices, preferably organic electroluminescent devices (preferred), organic integrated circuits, organic field-effect transistors, organic thin film transistors, organic light-emitting transistors, organic solar cells, organic optical detectors, organic photoreceptors, organic field-quench devices, light-emitting electrochemical cells and organic laser diodes (all claimed).    ADVANTAGE - (I) exhibit high charge carrier mobility, and thus it ensures the formation of thicker hole transport layers with less increase in operating voltage, high thermal stability, high glass transition temperature, high hole mobility, and low tendency for crystallization, and can be produced in a simple and economic manner. The electronic device comprising (I), exhibits high efficiency, long service life, and improved service life.    DETAILED DESCRIPTION - Substituted arylamine compounds of formula (I) excluding bis-biphenyl-2-yl-p-tolyl-amine, bis-biphenyl-2-yl-(4'-methyl-biphenyl-4-yl)-amine and bis-biphenyl-2-yl-(4'-ethyl-biphenyl-4-yl)-amine, are new.    Z = CR1 or N;    W1 = CH or N;    Ar1 = (hetero)aromatic ring with 6-30 aromatic ring atoms (optionally substituted by at least one group R1);    Ar2 = (hetero)aromatic ring with 6-24 aromatic ring atoms (optionally substituted by at least one group R1); either    R1 = 1-20C alkoxy or 1-20C (thio)alkyl (both linear) or 3-20C alkoxy or 3-20C (thio)alkyl (both branched or cyclic), 2-20C alkenyl or 2-20C alkynyl (in all groups at least one CH2 is optionally replaced by -R2C=CR2-, -CC-, Si(R2)2, C=O, C=S, C=NR2, -C(=O)O-, -C(=O)NR2, NR2, P(=O)(R2), -O-, -S-, SO or SO2, and in all groups at least one H is optionally replaced by D, F, Cl, Br, I, CN or NO2), (hetero)aromatic ring with 5-30 aromatic ring atoms (all optionally substituted by at least one group R2), H, D, F, Cl, Br, I, C(=O)R2, CN, Si(R2)3, NO2, P(=O)(R2)2, S(=O)R2 or S(=O)2R2; or    at least 2 R1 = ring; either    R2 = 1-20C alkoxy or 1-20C (thio)alkyl (both linear) or 3-20C alkoxy or 3-20C (thio)alkyl (both branched or cyclic), 2-20C alkenyl or 2-20C alkynyl (in all groups at least one CH2 is optionally replaced by -R3C=CR3-, -CC-, Si(R3)2, C=O, C=S, C=NR3, -C(=O)O-, -C(=O)NR3, NR3, P(=O)(R3), -O-, -S-, SO or SO2, and in all groups at least one H is optionally replaced by D, F, Cl, Br, I, CN or NO2), (hetero)aromatic ring with 5-30 aromatic ring atoms (all optionally substituted by at least one group R3), H, D, F, Cl, Br, I, C(=O)R3, CN, Si(R3)3, NO2, P(=O)(R3)2, S(=O)R3 or S(=O)2R3; or    at least 2R2 = ring; either    R3 = H, D, F or aliphatic or (hetero)aromatic 1-20C organic group (at least one H is optionally replaced by D or F), where 3 groups that are bonded to central N are not identical; or    at least 2 R3 = ring;    n = 0-5; and    m = 0-3.    INDEPENDENT CLAIMS are also included for:    (1) preparing (I);    (2) an oligomer, polymer or a dendrimer comprising (I), where the bonds to the oligomer, polymer or the dendrimer are localized at any position in (I), which is substituted with R1; and    (3) a formulation comprising (I) or the polymer, oligomer or dendrimer, and at least one solvent.