Organic electro-luminescence device

An organic electroluminescent device with an organic layer including an emissive layer between an anode and a cathode, the organic layer comprising at least one compound having formula (3) below as a light-emitting material:

• 38
• where the substitute groups of methylene groups are in a cis or trans form;
• R1 and R2 are the same or different groups and are benzo 5-membered heterocyclic groups having 0 to 4 methyl groups, benzo-6-membered heterocyclic groups having 0 to 4 methyl groups, phenyl groups having 0 to 3 substitute groups selected from Table 1 below, naphthyl groups having 0 to 3 substitute groups selected from Table 1 below, 5-membered heterocyclic groups having 0 to 3 substitute groups selected from Table 1 below, or 6-membered heterocyclic groups having 0 to 3 substitute groups selected from Table 1 below:
• 5 TABLE 1 —NO2 39 —R3 40 —CN —R4—O—R4 41 42 43 44 45 —CF3 —R4—R10 —OH 46 —S—R11 —R6—CH3 47
• where R3 is a halogen atom;
• R4 is an alkyl group having 1 to 4 carbon atoms;
• R5 is an alkylene group having 1 to 4 carbon atoms;
• R6 is an alkylene group having 2 to 4 carbon atoms;
• R7 is a substitute group selected from Table 2 below, a phenyl group having 0 to 2 substitute groups selected from Table 4 below, or a naphthyl group having 0 to 4 substitute groups selected from Table 4 below;
• R8 is a substitute group selected from Table 3 below, a phenyl group having 0 to 2 substitute groups selected from Table 4 below, or a naphthyl group having 0 to 4 substitute groups selected from Table 4 below;
• R9 is an alkyl group having 1 to 4 carbon atoms or a phenyl group having 0 to 2 substitutes groups selected from Table 4 below;
• R10 is an halogen atom, an alkoxy group having 1 to 4 carbon atoms, or a phenyl group having 0 to 2 substitute groups selected from Table 4 below;
• R11 is a cycloalkyl group having 5 to 6 carbon atoms, an alkyl group having 1 to 4 carbon atoms, 2-hydroxyethyl group, or a phenyl group having 0 to 2 substitute groups selected from Table 4:
• 6 TABLE 2 —R12 —R13—CN —R13—R14 —R13—OH 48 —R13—O—R12 49 50 51 52 53
• 7 TABLE 3 —R12—R13—CN —R13—R14—R13—OH 54 55 56 57 58 59 60 61 62 63 64
• 8 TABLE 4 —O—R12—R14—NO2 65 66 —CN —R12 67
• where R12 is an alkyl group having 1 to 4 carbon atoms;
• R13 is an alkylene group having 2 to 4 carbon atoms;
• R14 is an halogen atom;
• R15 is an alkylene group having 1 to 4 carbon atoms;
• R16 is an alkyl group having 1 to 4 carbon atoms or a phenyl group having 0 to 2 substitute groups selected from Table 4 below;
• and R17 and R18 are the same or different and are alkyl groups having 1 to 4 carbon atoms or hydrogen atom.