Organic electroluminescent compound and organic electroluminescent device comprising the same

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

wherein

X 1 and X 3 represent CR, and X 2 and X 4 represent N;

is represented by the following formulas:

R and R 11 , each independently, represent hydrogen, deuterium, a halogen, a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (5- to 30-membered)heteroaryl containing at least one heteroatom selected from B, N, O, S, Si, and P;

R 1 and R 2 , each independently, represent hydrogen, deuterium, a halogen, a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C6-C30)aryl, a substituted or unsubstituted (5- to 30-membered)heteroaryl containing at least one heteroatom selected from B, N, O, S, Si, and P, a substituted or unsubstituted (3- to 7-membered)heterocycloalkyl containing at least one heteroatom selected from B, N, O, S, Si, and P, or a substituted or unsubstituted (C3-C30)cycloalkyl; or may be linked to each other to form a substituted or unsubstituted, mono- or polycyclic, (3- to 30-membered) alicyclic or aromatic ring, or a combination thereof, whose carbon atom(s) may be replaced with at least one heteroatom selected from nitrogen, oxygen, and sulfur;

L represents a single bond, or a substituted or unsubstituted (C6-C30)arylene, and, if n is 0, L is not a single bond;

m represents an integer of 0 to 4, n represents an integer of 0 to 2, and m+n is 1 or greater; in which if m and n are 2 or greater, each L and each

may be the same or different, and, wherein, * represents a bonding site with (L) m .

2. The organic electroluminescent compound according to claim 1 , wherein in formula 1, L is represented by the following formulas:

wherein * represents a bonding site.

3. The organic electroluminescent compound according to claim 1 , wherein formula 1 is represented by any one of the following formulas 4, and 7:

wherein Y 1 to Y 5 , R, R 1 , R 2 , L, m, and n are as defined in claim 1 .

4. The organic electroluminescent compound according to claim 1 , wherein the substituents of the substituted alkyl, the substituted aryl(ene), the substituted heteroaryl(ene), the substituted heterocycloalkyl, the substituted cycloalkyl, and the substituted mono- or polycyclic, alicyclic or aromatic ring, or a combination thereof in R, R 1 , R 2 , R 11 , and L, 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(s); a (C6-C30)aryl unsubstituted or substituted with a (5- 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.

5. The organic electroluminescent compound according to claim 1 , wherein R and R 11 , each independently, represent hydrogen, a substituted or unsubstituted (C6-C25)aryl, or a substituted or unsubstituted (5- to 15-membered)heteroaryl; R 1 and R 2 , each independently, represent hydrogen; and L represents a single bond, a substituted or unsubstituted (C6-C25)aryl(ene), or a substituted or unsubstituted (5- to 20-membered)heteroaryl(ene).

6. The organic electroluminescent compound according to claim 1 , wherein R and R 11 , each independently, represent hydrogen, a (C6-C25)aryl unsubstituted or substituted with a (C1-C6)alkyl(s) or a (5- to 15-membered)heteroaryl(s), or a (5- to 15-membered)heteroaryl unsubstituted or substituted with a (C6-C12)aryl(s); R 1 and R 2 , each independently, represent hydrogen; and L represents a single bond, a (C6-C25)aryl(ene) unsubstituted or substituted with a (C1-C6)alkyl(s), or a (5- to 20-membered)heteroaryl(ene) unsubstituted or substituted with a (C6-C12)aryl(s).

7. The organic electroluminescent compound according to claim 1 , wherein the compound represented by formula 1 is at least one selected from the group consisting of:

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