ORGANIC ELECTROLUMINESCENT COMPOUND AND ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAME

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

wherein

X 1 to X 3 each independently represent N or CR;

R and 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, or a substituted or unsubstituted (3- to 30-membered)heteroaryl;

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

R 1 to R 8 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;

at least one pair of R 1 to R 8 must be linked to each other to form a ring; and

a represents an integer of 1 to 3, where a is an integer of 2 or more, each R 11 may be the same or different.

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

is represented by any one of the following formulas:

wherein

R, L, R 11 , and a are as defined in claim 1 .

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

is represented by any one of the following formulas:

wherein

B 1 to B 8 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; and

R 1 to R 8 are as defined in claim 1 .

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

is represented by any one of the following formulas:

wherein

Y and Y′ each independently represent N—Ar 2 , O, S, or CR a R b ;

Ar 2 , R a , R b , and B 9 to B 44 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; and

R 1 to R 8 are as defined in claim 1 .

5 . 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, 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 R, R 1 to R 8 , R 11 , L, Ar 2 , R a , R b , and B, to B 44 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.

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

X 1 to X 3 each independently represent N or CR;

R represents hydrogen, or a substituted or unsubstituted (C6-C20)aryl;

R 11 represents hydrogen, or a substituted or unsubstituted (C6-C15)aryl;

L represents a single bond, a substituted or unsubstituted (C6-C15)arylene, or a substituted or unsubstituted (5- to 15-membered)heteroarylene;

R 1 to R 8 each independently represent hydrogen, a substituted or unsubstituted (C6-C15)aryl, a substituted or unsubstituted (5- to 15-membered)heteroaryl, or a substituted or unsubstituted di(C6-C15)arylamino; or may be linked to an adjacent substituent to form a ring;

at least one pair of R 1 to R 8 must be linked to each other to form a ring; and

a represents 1 or 2.

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

X 1 to X 3 each independently represent N or CR;

R represents hydrogen, or a (C6-C20)aryl unsubstituted or substituted with a (C1-C6)alkyl(s);

R 11 represents hydrogen, or an unsubstituted (C6-C15)aryl;

L represents a single bond, an unsubstituted (C6-C15)arylene, or an unsubstituted (5- to 15-membered)heteroarylene;

R 1 to R 8 each independently represent hydrogen; an unsubstituted (C6-C15)aryl; a (5- to 15-membered)heteroaryl unsubstituted or substituted with a (C6-C12)aryl(s); or an unsubstituted di(C6-C15)arylamino; or may be linked to an adjacent substituent to form a ring;

at least one pair of R 1 to R 8 must be linked to each other to form a ring; and

a represents 1 or 2.

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

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

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

11 . The organic electroluminescent device according to claim 10 , wherein the organic electroluminescent compound is comprised in a light-emitting layer.

12 . The organic electroluminescent device according to claim 11 , wherein the light-emitting layer further comprises an organic electroluminescent compound besides the organic electroluminescent compound, and the further comprised organic electroluminescent compound is represented by the following formula 11:

wherein

Ar 3 to Ar 6 each independently represent a substituted or unsubstituted (C6-C30)aryl;

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

L 2 represents a single bond, or a substituted or unsubstituted (C6-C30)arylene;

R 12 and R 13 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;

m and n each independently represent an integer of 0 to 2, where at least one of m and n is 1 or more; and

p and q each independently represent an integer of 1 to 4, where p and q are an integer of 2 or more, each R, and each R 2 may be the same or different.