Patent ID: 7838126

Claim:
Electronic device comprising a cathode, an anode, and at least one organic layer, wherein said organic layer comprises at least one compound of formulae (2) or (3): wherein R 2 is on each occurrence, identically or differently, an aromatic ring system having 6 to 40 aromatic C atoms, wherein said aromatic ring system is optionally substituted by one or more radicals R 3 or a heteroaromatic ring system having 1 to 40 aromatic C atoms, wherein said heteroaromatic ring system is optionally substituted by one or more radicals R 3 ; R 3 is on each occurrence, identically or differently, H, OH, N(R 4 ) 2 , CN, B(R 4 ) 2 , Si(R 4 ) 3 , a straight-chain, branched or cyclic alkyl or alkoxy chain having 1 to 22 C atoms, in which, in addition, one or more non-adjacent C atoms may be replaced by —R 4 C═CR 4 —, —C≡C—, Si(R 4 ) 2 , Ge(R 4 ) 2 , Sn(R 4 ) 2 , —NR 4 —, —O—, —S—, —CO—, —CO—O— or —O—CO—O— and where one or more H atoms may be replaced by fluorine, or an aryl, heteroaryl or aryloxy group having 1 to 40 C atoms, which may also be substituted by one or more radicals R 4 , or a combination of 2, 3 or 4 of these systems; two or more substituents R 3 here may also form a ring system with one another; R 4 is on each occurrence, identically or differently, H or an aliphatic or aromatic hydrocarbon radical having 1 to 20 C atoms; Ar is on each occurrence, identically or differently, a divalent (in formula (2)) or trivalent (in formula (3)) aromatic or heteroaromatic ring system having 3 to 24 aromatic C atoms, which may be substituted by one or more radicals R 3 ; m is on each occurrence, identically or differently, 1, 2 or 3; wherein the compound of formulae (2) or (3) has a molecular weight of ≧390 g/mol and ≦10,000 g/mol and that the device does not comprise a phosphorescent emitter; and furthermore wherein neither R 2 nor Ar represents a substituted or unsubstituted spirobifluorene, and with the further provisos that R 2 and Ar do not contain a fused aromatic ring system having three or more fused benzene units and that R 2 and Ar do not form a mono- or polycyclic ring system with one another; and wherein the absorption edge of the compound of formulae (2) or (3) is <400 nm.