Organic electroluminescent compound and organic electroluminescent device comprising the same

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

wherein

X 1 represents —N(L 1 -R 5 )—, —O—, —S— or —C(R 6 )(R 7 )—;

Y 1 represents —N═, —N(R 8 )—, —O—, —S—, —C(R 9 )═ or —C(R 10 )(R 11 )—;

Y 2 represents —N— or —C═;

L 1 and L 2 , each independently, represent a single bond, a substituted or unsubstituted (C6-C30)arylene, a substituted or unsubstituted (3- to 30-membered)heteroarylene, or a substituted or unsubstituted (C3-C30)cycloalkylene;

R 1 to R 3 and R 6 to R 11 , 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 mono- or di-(C1-C30)alkylamino, a substituted or unsubstituted mono- or di-(C6-C30)arylamino, or a substituted or unsubstituted (C1-C30)alkyl(C6-C30)arylamino; or may be linked to an adjacent substituent to form a ring;

R 4 and R 5 , each independently, represent a substituted or unsubstituted (C6-C30)aryl, a substituted or unsubstituted (3- to 30-membered)heteroaryl, or a substituted or unsubstituted mono- or di-(C6-C30)arylamino; and

a represents an integer of 1 or 2; b represents an integer of 1 to 3; c represents an integer of 1 to 4; where if a to c, each independently, are an integer of 2 or more, each of R 1 , each of R 2 , and each of R 3 may be the same or different.

2. The organic electroluminescent compound according to claim 1 , wherein the substituents of the substituted (C1-C30)alkyl, the substituted (C6-C30)aryl(ene), the substituted (3- to 30-membered)heteroaryl(ene), the substituted (C3-C30)cycloalkyl(ene), the substituted (C1-C30)alkoxy, the substituted tri(C1-C30)alkylsilyl, the substituted di(C1-C30)alkyl(C6-C30)arylsilyl, the substituted (C1-C30)alkyldi(C6-C30)arylsilyl, the substituted tri(C6-C30)arylsilyl, the substituted mono- or di-(C1-C30)alkylamino, the substituted mono- or di-(C6-C30)arylamino, and the substituted (C1-C30)alkyl(C6-C30)arylamino in L 1 , L 2 , and R 1 to R 11 , 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 (5- to 30-membered)heteroaryl unsubstituted or substituted with a (C6-C30)aryl; a (C6-C30)aryl unsubstituted or substituted with a (5- to 30-membered)heteroaryl; 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; 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.

3. The organic electroluminescent compound according to claim 1 , wherein L 1 and L 2 , each independently, represent a single bond, or any one of the following R-1 to R-4:

4. The organic electroluminescent compound according to claim 1 , wherein

L 1 and L 2 , each independently, represent a single bond, a substituted or unsubstituted (C6-C15)arylene, or a substituted or unsubstituted (5- to 15-membered)heteroarylene;

R 1 to R 3 , each independently, represent hydrogen, a substituted or unsubstituted (C6-C15)aryl, or a substituted or unsubstituted (5- to 15-membered)heteroaryl; or may be linked to an adjacent substituent to form a ring;

R 4 and R 5 , each independently, represent a substituted or unsubstituted (C6-C15)aryl, a substituted or unsubstituted (5- to 15-membered)heteroaryl, or a substituted or unsubstituted mono- or di-(C6-C15)arylamino;

R 6 to R 11 , each independently, represent a substituted or unsubstituted (C1-C6)alkyl, or a substituted or unsubstituted (C6-C15)aryl; and

a, b and c, each independently, represent 1 or 2.

5. The organic electroluminescent compound according to claim 1 , wherein

L 1 and L 2 , each independently, represent a single bond, or an unsubstituted (C6-C15)arylene;

R 1 to R 3 , each independently, represent hydrogen, an unsubstituted (C6-C15)aryl, or an unsubstituted (5- to 15-membered)heteroaryl; or may be linked to an adjacent substituent to form a ring;

R 4 and R 5 , each independently, represent an unsubstituted (C6-C15)aryl; a (5- to 15-membered)heteroaryl unsubstituted or substituted with a (C6-C15)aryl; a (5- to 15-membered)heteroaryl substituted with a (C6-C15)aryl and a (5- to 15-membered)heteroaryl; or a mono- or di-(C6-C15)arylamino unsubstituted or substituted with a (C1-C6)alkyl;

R 6 to R 11 , each independently, represent an unsubstituted (C1-C6)alkyl, or an unsubstituted (C6-C15)aryl; and

a, b and c, each independently, represent 1 or 2.

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

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

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

9. The organic electroluminescent device according to claim 8 , wherein the organic electroluminescent compound is comprised in a light-emitting layer.