Organic electroluminescent compound and organic electroluminescent device comprising the same

1. An organic electroluminescent compound represented by the following formula 1:

wherein

X and X 1 , each independently, represent O or S;

HAr represents a substituted or unsubstituted (3- to 30-membered)heteroaryl;

L 1 represents a single bond, a substituted or unsubstituted (C6-C30)arylene, or a substituted or unsubstituted (3- to 30-membered)heteroaryene;

R 1 represents a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C6-C30)aryl, a substituted or unsubstituted (3- to 30-membered)heteroaryl, or a substituted or unsubstituted (C3-C30)cycloalkyl;

R 2 and R 3 , each independently, represent hydrogen, deuterium, a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C6-C30)aryl, a substituted or unsubstituted (3- to 30-membered)heteroaryl, or a substituted or unsubstituted (C3-C30)cycloalkyl, or may be linked to adjacent one(s) of R 2 and R 3 to form a ring(s); and

n and m represent an integer of 1 to 3; in which if n and m, each independently, are an integer of 2 or more, each of R 2 or each of R 3 may be the same or different.

2. The organic electroluminescent compound according to claim 1 , wherein the formula 1 is represented by at least one of the following formulas 1-1 to 1-8:

wherein, X, X 1 , HAr, L 1 , R 1 to R 3 , n, and m are as defined in claim 1 .

3. The organic electroluminescent compound according to claim 1 , wherein the substituents of the substituted alkyl, the substituted aryl(ene), the substituted heteroaryl(ene), and the substituted cycloalkyl, each independently, are at least one selected from the group consisting of deuterium; a halogen; a cyano; a carboxyl; a nitro; a hydroxyl; a (C1-C30)alkyl; a halo(C1-C30)alkyl; a (C2-C30)alkenyl; a (C2-C30)alkynyl; a (C1-C30)alkoxy; a (C1-C30)alkylthio; a (C3-C30)cycloalkyl; a (C3-C30)cycloalkenyl; a (3- to 7-membered)heterocycloalkyl; a (C6-C30)aryloxy; a (C6-C30)arylthio; a (3- to 30-membered)heteroaryl unsubstituted or substituted with a (C6-C30)aryl(s); a (C6-C30)aryl unsubstituted or substituted with a (3- to 30-membered)heteroaryl(s); a tri(C1-C30)alkylsilyl; a tri(C6-C30)arylsilyl; a di(C1-C30)alkyl(C6-C30)arylsilyl; a (C1-C30)alkyldi(C6-C30)arylsilyl; an amino; a mono- or di-(C1-C30)alkylamino; a mono- or di-(C6-C30)arylamino unsubstituted or substituted with a (C1-C30)alkyl(s); a (C1-C30)alkyl(C6-C30)arylamino; a (C1-C30)alkylcarbonyl; a (C1-C30)alkoxycarbonyl; a (C6-C30)arylcarbonyl; a di(C6-C30)arylboronyl; a di(C1-C30)alkylboronyl; a (C1-C30)alkyl(C6-C30)arylboronyl; a (C6-C30)aryl(C1-C30)alkyl; and a (C1-C30)alkyl(C6-C30)aryl.

4. The organic electroluminescent compound according to claim 1 , wherein HAr is any one selected from the following group 1:

5. The organic electroluminescent compound according to claim 1 , wherein the compound represented by formula 1 is selected from the group consisting of the following compounds:

6. An organic electroluminescent material comprising the organic electroluminescent compound according to claim 1 .

7. A plurality of host materials comprising the organic electroluminescent material according to claim 6 as a first host material, and at least one organic electroluminescent compound as a second host material, wherein the first host material and the second host material are different from each other.

8. The plurality of host materials according to claim 7 , wherein the at least one organic electroluminescent compound is at least one of the compounds represented by the following formula 11:

wherein

A 1 and A 2 , each independently, represent a substituted or unsubstituted (C6-C30)aryl;

L 1 represents a single bond, or a substituted or unsubstituted (C6-C30)aryene; and

X 11 to X 26 , 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 (C2-C30)alkynyl, a substituted or unsubstituted (C3-C30)cycloalkyl, a substituted or unsubstituted (C6-C60)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)arysilyl, a substituted or unsubstituted di(C1-C30)alkyl(C6-C30)arylsilyl, a substituted or unsubstituted (C1-C30)alkyldi(C6-C30)arysilyl, a substituted or unsubstituted mono- or di-(C1-C30)alkylamino, or a substituted or unsubstituted mono- or di-(C6-C30)arylamino, or may be linked to adjacent one(s) of X 11 to X 26 to form a ring(s).

9. The plurality of host materials according to claim 8 , wherein the compound represented by formula 11 is selected from the group consisting of the following compounds:

10. An organic electroluminescent device comprising the organic electroluminescent compound according to claim 1 .

11. An organic electroluminescent device comprising the plurality of host materials according to claim 7 .