Patent ID: 8039126

Claim:
A compound of formula (1) wherein Z is, identically or differently on each occurrence, N, P, As, or P═O; X and Y are, identically or differently on each occurrence, CR 2 , C═O, O, S, NR, SiR 2 , PR, P(═O)R, S(═O), or SO 2 ; A is, identically or differently on each occurrence, CR or N; Ar 1 is, identically or differently on each occurrence, a monovalent aromatic or heteroaromatic ring system having 5 to 40 aromatic ring atoms optionally substituted by one or more radicals R; Ar 2 is, identically or differently on each occurrence, a divalent aromatic or heteroaromatic ring system having 5 to 40 aromatic ring atoms optionally substituted by one or more radicals R; R is, identically or differently on each occurrence, H; F; CI; Br; I; CN; NO 2 ; Si(R 1 ) 3 ; N(R 1 ) 2 ; B(OR 1 ) 2 ; a straight-chain alkyl, alkoxy or thioalkoxy group having 1 to 40 C atoms optionally substituted by one or more radicals R 1 ; a branched or cyclic alkyl, alkoxy or thioalkoxy group having 3 to 40 C atoms optionally substituted by one or more radicals R 1 ; wherein one or more non-adjacent CH 2 groups of said straight-chain alkyl, alkoxy or thioalkoxy groups or said branched or cyclic alkyl, alkoxy or thioalkoxy groups are optionally replaced by —R 1 C═CR 1 —, —C═C—, Si(R 1 ) 2 , Ge(R 1 ) 2 , Sn(R 1 ) 2 , C═O, C═S, C═Se, C═NR 1 , —O—, —S—, —N(R 1 )— or —CONR 1 — and wherein one or more H atoms of said straight-chain alkyl, alkoxy or thioalkoxy groups or said branched or cyclic alkyl, alkoxy or thioalkoxy groups are optionally replaced by F, CI, Br, I, CN, or NO 2 ; an aromatic or heteroaromatic ring system having 5 to 40 aromatic ring atoms optionally substituted by one or more radicals; an aryloxy or heteroaryloxy group having 5 to 24 aromatic ring atoms optionally substituted by one or more radicals; or a combination of two, three, four, or five of these systems; and wherein two or more substituents R optionally define a mono- or poly cyclic, aliphatic or aromatic ring system with one another; R is, identically or differently on each occurrence, H or a hydrocarbon radical having 1 to 20 C atoms, which may be aliphatic or aromatic or a combination of aliphatic and aromatic, wherein one or more H atoms are optionally replaced by F, and wherein two or more radicals R 1 optionally define a mono- or polycyclic, aliphatic or aromatic ring system with one another; n is 0, 1, 2, or 3; m is, identically or differently on each occurrence, 0 or 1, wherein when m=0, Y is not present and instead radicals R are bonded in these positions.