Electronic device comprising a compound of one of the formulae (1-1-b) to (1-1-i), where the following applies to the symbols and indices: Ar is an aromatic ring system selected from one of the following formulae (ArN-1) to (ArN-14), where the groups ( ArN-1) to ( ArN-14) may be substituted on each free position by one or more radicals R 2; V is CR 2; E 1 is on each occurrence, identically or differently, selected from C(R 1) 2, O and S; R 1 is selected, identically or differently on each occurrence, from the group consisting of H, D, F, a straight-chain alkyl group having 1 to 10 C atoms or a branched or cyclic alkyl group having 3 to 10 C atoms, where the above-mentioned groups may each be substituted by one or more radicals R 4; R 2 is selected, identically or differently on each occurrence, from the group consisting of H, D, F, a straight-chain alkyl group having 1 to 10 C atoms or a branched or cyclic alkyl group having 3 to 10 C atoms, where the above-mentioned groups may each be substituted by one or more radicals R 4, and a phenyl group; R 4 is on each occurrence, identically or differently, H, F, a straight-chain alkyl group having 1 to 10 C atoms or a branched or cyclic alkyl or group having 3 to 10 C atoms, where the above-mentioned groups may each be substituted by one or more radicals R 5; R 5 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, H atoms may be replaced by F; two adjacent substituents R 5 here may also form a mono- or polycyclic aliphatic or aromatic ring system with one another; and i is, identically or differently, on each occurrence 0, 1, 2 or 3, where i = 0 means that the group in brackets is absent and replaced by a single bond. characterised in that the compound of one of the formulae (1-1-b) to (1-1-i) is employed as blue fluorescent emitter in an emitting layer. where the following applies to the symbols and indices: Ar is an aromatic ring system selected from one of the following formulae (ArN-1) to (ArN-14), Ar is an aromatic ring system selected from one of the following formulae (ArN-1) to (ArN-14), where the groups ( ArN-1) to ( ArN-14) may be substituted on each free position by one or more radicals R 2; V is CR 2; E 1 is on each occurrence, identically or differently, selected from C(R 1) 2, O and S; R 1 is selected, identically or differently on each occurrence, from the group consisting of H, D, F, a straight-chain alkyl group having 1 to 10 C atoms or a branched or cyclic alkyl group having 3 to 10 C atoms, where the above-mentioned groups may each be substituted by one or more radicals R 4; R 2 is selected, identically or differently on each occurrence, from the group consisting of H, D, F, a straight-chain alkyl group having 1 to 10 C atoms or a branched or cyclic alkyl group having 3 to 10 C atoms, where the above-mentioned groups may each be substituted by one or more radicals R 4, and a phenyl group; R 4 is on each occurrence, identically or differently, H, F, a straight-chain alkyl group having 1 to 10 C atoms or a branched or cyclic alkyl or group having 3 to 10 C atoms, where the above-mentioned groups may each be substituted by one or more radicals R 5; R 5 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, H atoms may be replaced by F; two adjacent substituents R 5 here may also form a mono- or polycyclic aliphatic or aromatic ring system with one another; and i is, identically or differently, on each occurrence 0, 1, 2 or 3, where i = 0 means that the group in brackets is absent and replaced by a single bond. V is CR 2; E 1 is on each occurrence, identically or differently, selected from C(R 1) 2, O and S; R 1 is selected, identically or differently on each occurrence, from the group consisting of H, D, F, a straight-chain alkyl group having 1 to 10 C atoms or a branched or cyclic alkyl group having 3 to 10 C atoms, where the above-mentioned groups may each be substituted by one or more radicals R 4; R 2 is selected, identically or differently on each occurrence, from the group consisting of H, D, F, a straight-chain alkyl group having 1 to 10 C atoms or a branched or cyclic alkyl group having 3 to 10 C atoms, where the above-mentioned groups may each be substituted by one or more radicals R 4, and a phenyl group; R 4 is on each occurrence, identically or differently, H, F, a straight-chain alkyl group having 1 to 10 C atoms or a branched or cyclic alkyl or group having 3 to 10 C atoms, where the above-mentioned groups may each be substituted by one or more radicals R 5; R 5 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, H atoms may be replaced by F; two adjacent substituents R 5 here may also form a mono- or polycyclic aliphatic or aromatic ring system with one another; and i is, identically or differently, on each occurrence 0, 1, 2 or 3, where i = 0 means that the group in brackets is absent and replaced by a single bond. characterised in that the compound of one of the formulae (1-1-b) to (1-1-i) is employed as blue fluorescent emitter in an emitting layer.