ORGANIC ELECTROLUMINESCENT COMPOUND, ORGANIC ELECTROLUMINESCENT MATERIAL COMPRISING THE SAME, AND ORGANIC ELECTROLUMINESCENT DEVICE

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

wherein

R 1 to R 4 each independently represent *-(L 1 ) a -(Ar 1 ) b , hydrogen, deuterium, halogen, cyano, a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C3-C30)cycloalkyl, a substituted or unsubstituted (3- to 7-membered)heterocycloalkyl, a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (3- to 30-membered)heteroaryl; or may be linked to an adjacent substituent(s) to form a ring(s):

R 5 to R 12 each independently represent *-(L 1 ) a -(Ar 1 ) b , hydrogen, deuterium, halogen, cyano, a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C3-C30)cycloalkyl, a substituted or unsubstituted (3- to 7-membered)heterocycloalkyl, a substituted or unsubstituted fused ring of an (C3-C30) aliphatic ring and a (C6-C30) aromatic ring, a substituted or unsubstituted (C6-C30)aryl, a substituted or unsubstituted (3- to 30-membered)heteroaryl, 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, or a substituted or unsubstituted tri(C6-C30)arylsilyl; or may be linked to an adjacent substituent(s) to form a ring(s);

provided that at least one of R 1 to R 12 represent(s) *-(L 1 ) a -(Ar 1 ) b ;

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

Ar 1 represents a substituted or unsubstituted (C6-C30)aryl, a substituted or unsubstituted (3- to 30-membered)heteroaryl, or —N—(Ar 2 )(Ar 3 );

Ar 2 and Ar 3 each independently represent a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C2-C30)alkenyl, a substituted or unsubstituted fused ring of an (C3-C30) aliphatic ring and a (C6-C30) aromatic ring, a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (3- to 30-membered)heteroaryl; and

a represents an integer of 1 or 2, b represents an integer of 1 to 4, and when a and b are 2 or more, each of L 1 and each of Ar 1 may be the same or different;

provided that the compounds where R 5 to R 10 and R 12 represent hydrogen and R 11 include a substituted amino group are excluded.

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

Ar 1 represents a substituted or unsubstituted (3- to 30-membered)heteroaryl containing at least one N. or —N—(Ar 2 )(Ar 3 ); and

L 1 represents a single bond or a substituted or unsubstituted (C6-C30)arylene.

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

wherein

R 1 to R 12 , L 1 , Ar 1 , a, and b are as defined in claim 1 .

4 . The organic electroluminescent compound according to claim 1 , wherein the compound represented by formula 1 is represented by any one of the following formulas 1-5 to 1-13:

wherein

R 1 to R 12 are as defined in claim 1 ;

R 13 to R 18 each independently represent *-(L 1 ) a -(Ar 1 ) b , hydrogen, deuterium, halogen, cyano, a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C3-C30)cycloalkyl, a substituted or unsubstituted (3- to 7-membered)heterocycloalkyl, a substituted or unsubstituted fused ring of an (C3-C30) aliphatic ring and a (C6-C30) aromatic ring, a substituted or unsubstituted (C6-C30)aryl, a substituted or unsubstituted (3- to 30-membered)heteroaryl, 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, or a substituted or unsubstituted tri(C6-C30)arylsilyl; or may be linked to an adjacent substituent(s) to form a ring(s);

provided that at least one of R 1 to R 14 in the formulas 1-5 to 1-7, at least one of R 1 to R 16 in the formulas 1-8 to 1-10, and at least one of R 1 to R 18 in the formulas 1-11 to 1-13 represent(s) *-(L 1 ) a -(Ar 1 ) b ; and

L 1 , Ar 1 , a, and b are as defined in claim 1 .

5 . The organic electroluminescent compound according to claim 1 , wherein L 1 represents a single bond, a substituted or unsubstituted phenylene, a substituted or unsubstituted biphenylene, a substituted or unsubstituted terphenylene, a substituted or unsubstituted naphthylene, a substituted or unsubstituted phenanthrenylene, a substituted or unsubstituted triphenylenylene, a substituted or unsubstituted fluorenylene, a substituted or unsubstituted pyridylene, a substituted or unsubstituted triazinylene, a substituted or unsubstituted carbazolylene, a substituted or unsubstituted quinoxalinylene, a substituted or unsubstituted quinazolinylene, a substituted or unsubstituted dibenzofuranylene, or a substituted or unsubstituted benzoquinoxalinylene.

6 . The organic electroluminescent compound according to claim 1 , wherein the substituted or unsubstituted (3- to 30-membered)heteroaryl of Ar 1 represents a substituted or unsubstituted pyridyl, a substituted or unsubstituted pyrimidinyl, a substituted or unsubstituted triazinyl, a substituted or unsubstituted pyrazinyl, a substituted or unsubstituted quinolinyl, a substituted or unsubstituted quinazolinyl, a substituted or unsubstituted quinoxalinyl, a substituted or unsubstituted benzoquinolinyl, a substituted or unsubstituted benzoquinazolinyl, a substituted or unsubstituted benzoquinoxalinyl, a substituted or unsubstituted dibenzoquinolinyl, a substituted or unsubstituted dibenzoquinazolinyl, a substituted or unsubstituted dibenzoquinoxalinyl, a substituted or unsubstituted indenopyridyl, a substituted or unsubstituted indenopyrimidinyl, a substituted or unsubstituted indenopyrazinyl, a substituted or unsubstituted benzofuropyridyl, a substituted or unsubstituted benzofuropyrmidinyl, a substituted or unsubstituted benzofuropyrazinyl, a substituted or unsubstituted benzothiopyridyl, a substituted or unsubstituted benzothiopyrimidinyl, a substituted or unsubstituted benzothiopyrazinyl, a substituted or unsubstituted carbazolyl, a substituted or unsubstituted benzocarbazolyl, a substituted or unsubstituted dibenzofuranyl, or a substituted or unsubstituted dibenzothiophenyl.

7 . The organic electroluminescent compound according to claim 1 , wherein the substituted or unsubstituted (C6-C30)aryl of Ar 1 represents a substituted or unsubstituted phenyl, a substituted or unsubstituted biphenyl, a substituted or unsubstituted terphenyl, a substituted or unsubstituted naphthyl, a substituted or unsubstituted fluorenyl, a substituted or unsubstituted triphenylenyl, or a substituted or unsubstituted phenanthrenyl.

8 . The organic electroluminescent compound according to claim 1 , wherein Ar 2 and Ar 3 each independently represent a substituted or unsubstituted phenyl, a substituted or unsubstituted naphthyl, a substituted or unsubstituted biphenyl, a substituted or unsubstituted fluorenyl, a substituted or unsubstituted phenanthrenyl, a substituted or unsubstituted chrysenyl, a substituted or unsubstituted dibenzofuranyl, a substituted or unsubstituted dibenzothiophenyl, a substituted or unsubstituted carbazolyl, a substituted or unsubstituted benzofluorenyl, or a substituted or unsubstituted dihydrophenanthrenyl.

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

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

11 . A plurality of host materials comprising at least one organic electroluminescent material according to claim 10 as a first host material and at least one second host material which is different from the first host material.

12 . The plurality of host materials according to claim 11 , wherein the second host material comprises a compound represented by the following formula 11:

wherein

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

Ar a represents a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (3- to 30-membered)heteroaryl;

R 9 and R 10 each independently represent hydrogen, deuterium, halogen, cyano, a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C6-C30)aryl, a substituted or unsubstituted (3- to 50-membered)heteroaryl, 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 fused ring of an (C3-C30) aliphatic ring and a (C6-C30) aromatic ring, a substituted or unsubstituted mono- or di-(C1-C30)alkylamino, a substituted or unsubstituted mono- or di-(C2-C30)alkenylamino, a substituted or unsubstituted (C1-C30)alkyl(C2-C30)alkenylamino, a substituted or unsubstituted (C1-C30)alkyl(C6-C30)arylamino, a substituted or unsubstituted (C1-C30)alkyl(3- to 30-membered)heteroarylamino, a substituted or unsubstituted (C2-C30)alkenyl(C6-C30)arylamino, a substituted or unsubstituted (C2-C30)alkenyl(3- to 30-membered)heteroarylamino, a substituted or unsubstituted mono- or di-(C6-C30)arylamino, a substituted or unsubstituted mono- or di-(3- to 30-membered)heteroarylamino, or a substituted or unsubstituted (C6-C30)aryl(3- to 30-membered)heteroarylamino; or may be linked to the adjacent substituent(s) to form a ring(s); and

f and g each independently represent an integer of 1 to 4; and when f and g are 2 or more, each of R 9 and each of R 10 may be the same or different.

13 . The plurality of host materials according to claim 12 , wherein the compound represented by formula 11 is represented by the following formula 12 or 13:

wherein

L a , Ar a , R 9 , R 10 , and f are as defined in claim 12 ;

T 1 and T 2 each independently represent a single bond, O, or S;

L b is as defined as L a in claim 12 ;

Ar b is as defined as Ar a in claim 12 ;

R 11 to R 14 each independently are as defined as R 9 in claim 12 ;

X 1 represents O, S, or NR a ;

R a represents a substituted or unsubstituted (C6-C30)aryl; and

g′ and h each independently represent an integer of 1 to 3, i and k each independently represent an integer of 1 to 4, and j represents an integer of 1 or 2; and when g′, h, i, j, and k are 2 or more, each of R 10 , each of R 11 , each of R 12 , each of R 13 , and each of R 14 may be the same or different.

14 . The plurality of host materials according to claim 12 , wherein the compound represented by formula 11 is selected from the following compounds:

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

16 . The organic electroluminescent device according to claim 15 , wherein the organic electroluminescent compound is included in a hole transport zone and/or an electron transport zone and/or a light-emitting layer.

17 . An organic electroluminescent device comprising an anode; a cathode; and at least one light-emitting layer between the anode and the cathode, wherein the at least one light-emitting layer comprises a plurality of host materials according to claim 11 .

18 . An organic electroluminescent compound represented by the following formula 2:

wherein

R′ 1 to R′ 4 each independently represent hydrogen, deuterium, halogen, cyano, a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C3-C30)cycloalkyl, a substituted or unsubstituted (3- to 7-membered)heterocycloalkyl, a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (3- to 30-membered)heteroaryl; or may be linked to an adjacent substituent(s) to form a ring(s);

R′ 5 and R′ 6 each independently represent hydrogen or deuterium;

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

Ar′ represents a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (3- to 30-membered)heteroaryl;

BFL represents a substituted or unsubstituted benzo[a]fluorenyl, a substituted or unsubstituted benzo[b]fluorenyl, or a substituted or unsubstituted benzo[c]fluorenyl; and

m represent an integer of 1 to 4, n represents an integer of 1 to 3, and when m and n are 2 or more, each of R′ 5 and each of R′ 6 may be the same or different.

19 . The organic electroluminescent compound according to claim 18 , wherein the compound represented by formula 2 is selected from the following compounds:

20 . An organic electroluminescent device comprising the organic electroluminescent compound according to claim 18 .

21 . An organic electroluminescent compound represented by the following formula 3:

wherein

R′ 11 to R′ 14 each independently represent substituted or unsubstituted methyl;

R′ 15 and R′ 16 each independently represent hydrogen or deuterium;

Ar′ 11 and Ar′ 12 each independently represent phenyl unsubstituted or substituted with deuterium, biphenyl unsubstituted or substituted with deuterium, terphenyl unsubstituted or substituted with deuterium, naphthyl unsubstituted or substituted with deuterium, a group of the following formula (a) unsubstituted or substituted with deuterium, or a combination thereof:

x represents an integer of 1 to 4, y represents an integer of 1 to 3, and when x and y are 2 or more, each of R′ 15 and each of R′ 16 may be the same or different.

22 . The organic electroluminescent compound according to claim 21 , wherein the compound represented by formula 3 is selected from the following compounds: