Organic electroluminescent compound and organic electroluminescent device comprising the same
The present disclosure relates to an organic electroluminescent compound represented by formula 1 and an organic electroluminescent device comprising the same. By comprising the organic electroluminescent compound of the present disclosure, an organic electroluminescent device having improved driving voltage, luminous efficiency, and/or lifespan characteristics can be provided.
1. An organic electroluminescent compound represented by the following formula 1:
wherein
Ar 1 and Ar 2 each independently represent a substituted with deuterium or unsubstituted (C6-C30)aryl, or a substituted with deuterium or unsubstituted (3- to 30-membered) heteroaryl, where if a plurality of Ar 1 or Ar 2 is present, each of Ar 1 or each of Ar 2 may be the same or different;
where if Ar 1 and Ar 2 each independently represent a substituted with deuterium or unsubstituted (C6-C30) aryl, or a substituted with deuterium or unsubstituted (3- to 30-membered) heteroaryl, Ar 1 and Ar 2 may be linked to each other via a single bond to form a ring(s);
L 1 represents a single bond, a substituted with deuterium or unsubstituted (C6-C30) arylene, or a substituted with deuterium or unsubstituted (3- to 30-membered) heteroarylene, where if a plurality of L 1 is present, each of L 1 may be the same or different;
R 1 and R 2 each independently represent a substituted or unsubstituted (C1-C30) alkyl, a substituted or unsubstituted (C6 C30) aryl, or a substituted or unsubstituted (3- to 30-membered) heteroaryl;
R 3 to R 5 each independently represent hydrogen, deuterium, a halogen, a cyano, a substituted with deuterium or unsubstituted (C1-C30) alkyl, a substituted with deuterium or unsubstituted (C6-C30) aryl, a substituted with deuterium or unsubstituted (3- to 30-membered) heteroaryl, or a substituted with deuterium or unsubstituted (C3-C30) cycloalkyl, where if a plurality of R 3 to R 5 is present, each of R 3 , each of R 4 , and each of R 5 may be the same or different; and
a represents an integer of 1 to 4, b represents 1 or 2, c represents an integer of 1 to 3, d represents 1 or 2, and c+d is 4, where if a, b, c, and d each independently are 2 or more, each of R 3 , each of R 4 , each of R 5 , and each of -L 1 -NAr 1 Ar 2 may be the same or different.
2. An organic electroluminescent device comprising the organic electroluminescent compound according to claim 1 .
3. The organic electroluminescent device according to claim 2 , wherein the organic electroluminescent compound is comprised in a hole transport zone.
4. The organic electroluminescent compound according to claim 1 ,
wherein the (C6-C30) aryl of Ar 1 and Ar 2 each independently represent a phenyl, a biphenyl, a naphthylphenyl, a terphenyl, a dimethylfluorenyl, a diphenylfluorenyl, a spirobifluorenyl, or a dimethylbenzofluorenyl; and the (3- to 30-membered) heteroaryl of Ar 1 and Ar 2 each independently represent a dibenzofuranyl, a dibenzothiophenyl, a benzonaphthofuranyl, a phenylcarbazolyl, or a naphthylcarbazolyl.