Plurality of light-emitting materials, organic electroluminescent compound, and organic electroluminescent device comprising the same

1 . A plurality of light-emitting materials comprising at least one first compound and at least one second compound, wherein the first compound is represented by the following formula 1 and the second compound is represented by at least one of the following formulas 2 and 2-13 to 2-15:

wherein,

T represents O, S, or CR 9 R 10 ;

ring A and ring B, each independently, represent a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (3- to 30-membered) heteroaryl;

R 1 to R 10 , 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 fused ring group of a (C3-C30) aliphatic ring(s) and a (C6-C30) aromatic ring(s), or -L 3 -N(Ar 11 )(Ar 12 );

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

Ar 2 , Ar 11 , and Ar 12 , 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 (C6-C30)aryl, a substituted or unsubstituted (C3-C30)heteroaryl, a substituted or unsubstituted (C3-C30)cycloalkyl, a substituted or unsubstituted (C1-C30)alkoxy, a substituted or unsubstituted fused ring group of a (C3-C30) aliphatic ring(s) and a (C6-C30) aromatic ring(s), a substituted or unsubstituted tri(C1-C30)alkylsilyl, a substituted or unsubstituted di(C1-C30)alkyl(C1-C30)arylsilyl, a substituted or unsubstituted (C1-C30)alkyldi(C6-C30)arylsilyl, or a substituted or unsubstituted tri(C6-C30)arylsilyl; and

t represents an integer of 1 or 2, in which if t is 2, each of Ar 2 may be the same or different;

wherein

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

Ar 4 and Ar 5 , each independently, represent 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 fused ring group of a (C3-C30) aliphatic ring(s) and a (C6-C30) aromatic ring(s), or -L 4 -N(Ar 13 )(Ar 14 ); or Ar 4 and Ar 5 may be linked to each other to form a ring(s);

n represents an integer of 0 to 2, in which

if n is 0, Ar 5 is represented by the following formula 2-1;

if n is 1 or 2, Ar 3 is represented by any one of the following formulas 2-1, 2-2, 2-4 and 2-5; and

if n is 2,

 may be the same or different;

with the proviso that if in formula 1, both ring A and ring B represent a C6 aryl, L 2 represents a single bond, and T represents CR 9 R 10 , then Ar 3 is not represented by formula 2-2:

wherein,

Y 1 represents B;

X 1 and X 2 , each independently, represent NR′, O or S;

W and Z, each independently, represent O, S, NR′ or CR 27 R 28 ;

R′, each independently, represents 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 fused ring group of a (C3-C30) aliphatic ring(s) and a (C6-C30) aromatic ring(s), or -L 4 -N(Ar 13 ) (Ar 14 ); and R′ in formula 2-1 may be linked to at least one of ring C, ring D and ring E, directly or via B, O, S or CR 27 R 28 as a linker, to form a ring(s);

ring C, ring D, and ring E, each independently, represent a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (3- to 50-membered)heteroaryl; and ring D and ring E may be linked to each other directly or via B, O, S or CR 27 R 28 as a linker to form a ring(s);

R 11 to R 14 , R 17 , R 18 , and R 21 to R 26 , 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 fused ring group of a (C3-C30) aliphatic ring(s) and a (C6-C30) aromatic ring(s), or -L 4 -N(Ar 13 ) (Ar 14 );

R 15 , R 16 , R 19 , R 20 , R 27 , and R 28 , each independently, represent a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (3- to 30-membered)heteroaryl; and at least one of R 15 and R 16 , R 19 and R 20 , and R 27 and R 28 may be fused to each other to form a spiro structure;

L 4 , each independently, represents a single bond, a substituted or unsubstituted (C6-C30)arylene, a substituted or unsubstituted (3- to 30-membered)heteroarylene, a substituted or unsubstituted divalent (C2-C30) aliphatic hydrocarbon group, or a substituted or unsubstituted divalent fused ring group of a (C3-C30) aliphatic ring(s) and a (C6-C30) aromatic ring(s);

Ar 13 and Ar 14 , each independently, represent a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C2-C30) alkenyl, a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (3- to 30-membered)heteroaryl; and

n′ and n″, each independently, represent 0 or 1, in which at least one of n′ and n″ is 1;

a, c, h, and i, each independently, represent an integer of 1 or 2; b and d, each independently, represent an integer of 1 to 3; f′, k, and l, each independently, represent an integer of 1 to 6; and e′, g, and j, each independently, represent an integer of 1 to 4, in which if a to d, e′, f, g to l, each independently, are an integer of 2 or more, each of R 11 , each of R 12 , each of R 13 , each of R 14 , each of R 17 , each of R 18 , each of R 21 , each of R 22 , each of R 23 , each of R 24 , each of R 25 , or each of R 26 may be the same or different.

2 . The plurality of light-emitting materials according to claim 1 , wherein the substituents of the substituted alkyl, the substituted alkenyl, the substituted aryl(ene), the substituted heteroaryl(ene), the substituted cycloalkyl, the substituted alkoxy, the substituted trialkylsilyl, the substituted dialkylarylsilyl, the substituted alkyldiarylsilyl, the substituted triarylsilyl, the substituted divalent aliphatic hydrocarbon group, and the substituted fused ring group of a aliphatic ring(s) and an aromatic ring(s), each independently, are at least one selected from the group consisting of deuterium; a halogen; a cyano; a carboxyl; a nitro; a hydroxyl; a phosphineoxide; a (C1-C30)alkyl unsubstituted or substituted with at least one of deuterium(s) and a halogen(s); 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 at least one of a (C1-C30)alkyl(s), a (C6-C30)aryl(s) and a di(C6-C30)arylamino(s); a (C6-C30)aryl unsubstituted or substituted with at least one of deuterium(s), a (C1-C30)alkyl(s), a (3- to 30-membered)heteroaryl(s) and a di(C6-C30)arylamino(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-(C2-C30) alkenylamino; a mono- or di-(C6-C30)arylamino unsubstituted or substituted with at least one of a (C1-C30)alkyl(s), a (3- to 30-membered)heteroaryl(s) and a di(C6-C30)arylamino(s); a mono- or di-(3- to 30-membered)heteroarylamino; a (C1-C30)alkyl(C2-C30) alkenylamino; a (C1-C30)alkyl(C6-C30)arylamino; a (C1-C30)alkyl(3- to 30-membered)heteroarylamino; a (C2-C30) alkenyl (C6-C30)arylamino; a (C2-C30) alkenyl (3- to 30-membered)heteroarylamino; a (C6-C30)aryl (3- to 30-membered)heteroarylamino unsubstituted or substituted with a (C6-C30)aryl(s); a (C1-C30)alkylcarbonyl; a (C1-C30)alkoxycarbonyl; a (C6-C30)arylcarbonyl; a (C6-C30)arylphosphine; 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 plurality of light-emitting materials according to claim 1 , wherein the formula 1 is represented by at least one of the following formulas 1-1 and 1-2:

wherein, L 1 , L 2 , Ar 1 , Ar 2 , T, ring A, ring B, R 1 to R 8 , and t are as defined in claim 1 .

4 . The plurality of light-emitting materials according to claim 1 , wherein the formula 2 is represented by at least one of the following formulas 2-11, 2-12 and 2-16 to 2-18:

wherein,

R 31 to R 41 , 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 fused ring group of a (C3-C30) aliphatic ring(s) and a (C6-C30) aromatic ring(s), or -L 4 -N(Ar 13 ) (Ar 14 ); or at least two adjacent ones of R 31 to R 41 and R′ may be linked to each other directly or via B, O, S or CR 27 R 28 as a linker to form a ring(s);

n′ and n″, each independently, represent 0 or 1, in which at least one of n′ and n″ is 1;

b′ and d′, each independently, represent an integer of 1 to 3; k′, and l′, each independently, represent an integer of 1 to 6; and h′ and i′, each independently, represent an integer of 1 or 2; and

Y 1 , X 1 , X 2 , W, Z, R 11 to R 14 , R 19 to R 28 , L, Ar 4 , Ar 5 , L 4 , Ar 13 , Ar 14 , a, c, g, and j, each independently, are as defined in claim 1 .

5 . The plurality of light-emitting materials according to claim 1 , wherein the compound represented by formula 1 is at least one selected from the group consisting of the following compounds:

wherein, D n represents that n hydrogens are replaced with deuterium; and n represents an integer of 1 to 50.

6 . The plurality of light-emitting materials according to claim 1 , wherein the second compound is at least one selected from the group consisting of the following compounds:

7 . An organic electroluminescent device comprising the plurality of light-emitting materials according to claim 1 .

8 . The organic electroluminescent device according to claim 7 , wherein the first compound is comprised as a host material, and the second compound is comprised as a dopant material.