Organic electroluminescent compound and organic electroluminescent device comprising the same
View Patent ↗The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. The organic electroluminescent device having a low driving voltage and/or a high luminous efficiency and/or a long lifespan can be provided, by comprising an organic electroluminescent compound according to the present disclosure.
1. An organic electroluminescent material, wherein the organic electroluminescent material is a host material, wherein the host material comprises at least one first host compound and at least one second host compound, and wherein the first host compound is represented by formula 2:
wherein,
X represents O, S, or NR 4 ;
X 1 to X 3 each independently represent N or CH;
Ar 2 represents a substituted or unsubstituted (C6-C30)aryl or a substituted or unsubstituted (3- to 30-membered)heteroaryl; and
R 4 represents hydrogen, deuterium, halogen, cyano, a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C2-C30)alkenyl, a substituted or unsubstituted (C2-C30)alkynyl, a substituted or unsubstituted (C3-C30)cycloalkyl, a substituted or unsubstituted (C6-C30)aryl, a substituted or unsubstituted (3- to 30-membered)heteroaryl, a substituted or unsubstituted tri(C1-C30)alkylsilyl, a substituted or unsubstituted tri(C6-C30)arylsilyl, a substituted or unsubstituted di(C1-C30)alkyl(C6-C30)arylsilyl, or a substituted or unsubstituted mono- or di- (C6-C30)arylamino; or may be linked to an adjacent substituent to form a substituted or unsubstituted (C3-C30) mono- or polycyclic, alicyclic or aromatic ring
wherein the second host compound is represented by the following formula 3:
wherein,
HAr represents a substituted or unsubstituted (5- to 30-membered) heteroaryl;
L 21 represents a single bond, a substituted or unsubstituted (C6-C30) arylene, or a substituted or unsubstituted (5- to 30-membered) heteroarylene;
X 21 represents O or S;
R 21 to R 23 each independently represent hydrogen, deuterium, halogen, cyano, a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C6-C30)aryl, a substituted or unsubstituted (5- to 30-membered)heteroaryl, a substituted or unsubstituted (C6-30)ar(C1-C30)alkyl, a substituted or unsubstituted (C3-C30)cycloalkyl, a substituted or unsubstituted (C1-C30)alkoxy, a substituted or unsubstituted (C1-C30)alkylsilyl, a substituted or unsubstituted (C6-C30)arylsilyl, a substituted or unsubstituted (C6-C30)ar(C1-C30) alkylsilyl, a substituted or unsubstituted (C1-C30)alkylamino, a substituted or unsubstituted (C6-C30)arylamino, or a substituted or unsubstituted (C1-C30)alkyl(C6-C30)arylamino; or may be linked to an adjacent substituent to form (C3-C30) mono- or polycyclic, alicyclic or aromatic ring; and
aa and cc each independently represent an integer from 1 to 4, and bb represents an integer of 1 or 2.
2. The organic electroluminescent material according to claim 1 , wherein the compound represented by formula 2 is selected from the following compounds:
3. An organic electroluminescent device comprising the organic electroluminescent material according to claim 1 .