| 主权项 |
1. An organic electroluminescence device comprising:
a cathode; an anode; and a plurality of organic thin-film layers provided between the cathode and the anode, the plurality of organic thin-film layers comprising at least one emitting layer, wherein at least one of the emitting layers comprising a red phosphorescent dopant material and a host material that is a biscarbazole derivative compound represented by a formula (1) below:wherein A1 represents a substituted or unsubstituted nitrogen-containing heterocyclic group having 1 to 30 ring carbon atoms;
A2 represents a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, or substituted or unsubstituted nitrogen-containing heterocyclic group having 1 to 30 ring carbon atoms; X1 and X2 each are a linking group and independently represent a single bond, substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, substituted or unsubstituted fused aromatic hydrocarbon group having 6 to 30 ring carbon atoms, substituted or unsubstituted aromatic heterocyclic group having 2 to 30 ring carbon atoms, or substituted or unsubstituted fused aromatic heterocyclic group having 2 to 30 ring carbon atoms; Y1 to Y4 independently represent a hydrogen atom, fluorine atom, cyano group, substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, substituted or unsubstituted haloalkyl group having 1 to 20 carbon atoms, substituted or unsubstituted haloalkoxy group having 1 to 20 carbon atoms, substituted or unsubstituted alkylsilyl having 1 to 10 carbon atoms, substituted or unsubstituted arylsilyl having 6 to 30 carbon atoms, substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, substituted or unsubstituted fused aromatic hydrocarbon group having 6 to 30 ring carbon atoms, substituted or unsubstituted aromatic heterocyclic group having 2 to 30 ring carbon atoms, or substituted or unsubstituted fused aromatic heterocyclic group having 2 to 30 ring carbon atoms; adjacent ones of Y1 to Y4 are allowed to be bonded to each other to form a ring structure; p and q represent an integer of 1 to 4; r and s represent an integer of 1 to 3; and when p and q are an integer of 2 to 4 and r and s are an integer of 2 to 3, a plurality of Y1 to Y4 are allowed to be the same or different; wherein the red phosphorescent dopant material is a phosphorescent organometallic complex having a substituted chemical structure represented by one of the following partial chemical structures represented by the formulas (D1), (D2), and (D3):wherein each R is independently selected from the group consisting of H, alkyl, alkenyl, alkynyl, alkylaryl, CN, CF3, CnF2n+1, trifluorovinyl, CO2R, C(O)R, NR2, NO2, OR, halo, aryl, heteroaryl, substituted aryl, substituted heteroaryl or a heterocyclic group. |
