Plurality of light-emitting materials, organic electroluminescent compound, and organic electroluminescent device comprising the same
The present disclosure relates to a plurality of light-emitting materials, an organic electroluminescent compound, and an organic electroluminescent device comprising the same. By comprising the organic electroluminescent compound or a specific combination of compounds according to the present disclosure as a host material and/or a dopant material, it is possible to provide an organic electroluminescent device having improved driving voltage, luminous efficiency and/or lifetime properties compared to conventional organic electroluminescent devices.
1. An organic electroluminescent compound represented by the following formula 11:
wherein,
T represents O, S, or CR 9 R 10 ;
ring A and ring B, each independently, represent a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (3- to 30-membered)heteroaryl;
R 1 to R 10 , each independently, represent hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C6-C30)aryl, a substituted or unsubstituted (3- to 30-membered)heteroaryl, a substituted or unsubstituted (C3-C30)cycloalkyl, a substituted or unsubstituted (C1-C30)alkoxy, a substituted or unsubstituted tri(C1-C30)alkylsilyl, a substituted or unsubstituted di(C1-C30)alkyl(C6-C30)arylsilyl, a substituted or unsubstituted (C1-C30)alkyldi(C6-C30)arylsilyl, a substituted or unsubstituted tri(C6-C30)arylsilyl, a substituted or unsubstituted fused ring group of a (C3-C30) aliphatic ring(s) and a (C6-C30) aromatic ring(s), or -L 3 -N(Ar 11 )(Ar 12 );
L 1 and L 2 each independently, represent a single bond, a phenylene unsubstituted or substituted with at least one of deuterium and a phenyl, a naphthylene unsubstituted or substituted with deuterium, or a substituted or unsubstituted (3- to 30-membered)heteroarylene;
L 3 , each independently, represent a single bond, a substituted or unsubstituted (C6-C30)arylene, or a substituted or unsubstituted (3- to 30-membered)heteroarylene;
Ar 1 represents a deuterium substituted or unsubstituted (C6-C30)aryl, or a deuterium substituted or unsubstituted (3- to 30-membered)heteroaryl;
Ar 2 , Ar 11 , and Ar 12 , each independently, represent hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C2-C30)alkenyl, a substituted or unsubstituted (C6-C30)aryl, a substituted or unsubstituted (3- to 30-membered)heteroaryl, a substituted or unsubstituted (C3-C30)cycloalkyl, a substituted or unsubstituted (C1-C30)alkoxy, a substituted or unsubstituted fused ring group of a (C3-C30) aliphatic ring(s) and a (C6-C30) aromatic ring(s), a substituted or unsubstituted tri(C1-C30)alkylsilyl, a substituted or unsubstituted di(C1-C30)alkyl(C6-C30)arylsilyl, a substituted or unsubstituted (C1-C30)alkyldi(C6-C30)arylsilyl, or a substituted or unsubstituted tri(C6-C30)arylsilyl; and
t represents an integer of 1 or 2, in which if t is 2, each of Ar 2 may be the same or different;
with the proviso that if both ring A and ring B represent a C6 aryl and L 2 represents a single bond, at least one of L 1 , Ar 1 , Ar 2 , R 1 to R 10 , ring A, and ring B comprises at least one deuterium.
2. The organic electroluminescent compound according to claim 1 , wherein the compound represented by formula 11 is at least one selected from the group consisting of the following compounds:
wherein, D n represents that n hydrogens are replaced with deuterium; and n represents an integer of 1 to 50.