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

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

wherein,

L 1 and L 2 , each independently, represent a single bond, a substituted or unsubstituted (C6-C30)arylene, or a substituted or unsubstituted (5- to 30-membered)heteroarylene;

Ar 1 and Ar 2 , each independently, represent a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (5- to 30-membered)heteroaryl;

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;

D n represents that n hydrogens are replaced with deuterium;

n represents an integer of 8 or more; and

the second compound is represented by the following formula 2:

wherein,

ring A, ring B, and ring C, each independently, represent a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (3- to 50-membered)heteroaryl;

Y 1 represents B;

X 1 and X 2 , each independently, represent NR; and

R 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 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 R may be linked to at least one of ring A, ring B and ring C to form a ring(s).

2. The plurality of light-emitting materials according to claim 1 , wherein the substituent of the substituted alkyl, 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 mono- or di-alkylamino, the substituted mono- or di-arylamino, or the substituted alkylarylamino, each independently, is 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 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 a (C1-C30)alkyl(s), a (5- 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-(C6-C30)arylamino unsubstituted or substituted with at least one of a (C1-C30)alkyl(s), a (5- to 30-membered)heteroaryl(s) and a di(C6-C30)arylamino(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.

3. The plurality of light-emitting materials according to claim 1 , wherein L 1 and L 2 in the formula 1, each independently, represent a single bond, or any one selected from the following Group 1:

wherein,

Z represents O, S, NR 101 , CR 102 R 103 , or SiR 104 R 105 ;

R 101 to R 105 , 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; or may be linked to an adjacent substituent to form a ring(s); and

two *'s in any one of Group 1 represent a bonding site with anthracene backbone, and a bonding site with Ar 1 or Ar 2 , respectively.

4. The plurality of light-emitting materials according to claim 1 , wherein Ar 1 and Ar 2 in the formula 1, each independently, represent any one selected from the following Group 2:

wherein,

A, G, E, and M, each independently, represent O, S, NR 106 , CR 107 R 108 , or SiR 109 R 110 ;

R 106 to R 110 , 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; or may be linked to an adjacent substituent to form a ring(s); and

* represents a bonding site with anthracene backbone, L 1 or L 2 .

5. The plurality of light-emitting materials according to claim 1 , wherein at least four of R 1 to R 8 in formula 1 represent deuterium.

6. The plurality of light-emitting materials according to claim 5 , wherein L 2 represents a single bond, and Ar 2 represents a naphthyl unsubstituted or substituted with deuterium or a (C6-C30)aryl(s).

7. The plurality of light-emitting materials according to claim 1 , wherein the formula 1 is represented by the following formula 1-1:

wherein, L 1 represents a single bond, a substituted or unsubstituted (C6-C30)arylene, or a substituted or unsubstituted (5- to 30-membered)heteroarylene;

Ar 1 represents a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (5- to 30-membered)heteroaryl;

Ar 3 and Ar 4 , each independently, represent hydrogen, deuterium, a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (5- to 30-membered)heteroaryl, with a proviso that Ar 3 and Ar 4 are not simultaneously hydrogen;

R 1 to 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;

D n represents that n hydrogens are replaced with deuterium; and

n represents an integer of 8 or more.

8. The plurality of light-emitting materials according to claim 1 , wherein the formula 2 is represented by the following formula 2-1:

wherein,

Y 1 , X 1 , and X 2 , are each as defined in claim 1 ; and

R 21 to R 31 , 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(s).

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

10. The plurality of light-emitting materials according to claim 1 , wherein the compound represented by formula 2 is selected from the group consisting of the following compounds:

wherein, D2 to D5 represent that 2 to 5 hydrogens are replaced with deuterium, respectively.

11. The plurality of light-emitting materials according to claim 1 , wherein the compound represented by formula 1 is a host material, and the compound represented by formula 2 is a dopant material.

12. An organic electroluminescent device comprising an anode, a cathode, and an organic layer(s) between the anode and the cathode, wherein the organic layer comprises at least one light-emitting layer, and the light-emitting layer comprises the plurality of light-emitting materials according to claim 1 or 7 .

13. The organic electroluminescent device according to claim 12 , wherein the organic layer comprises a hole transport zone disposed between the anode and the light-emitting layer, and the hole transport zone comprises a compound represented by the following formula 3:

wherein,

X 3 represents NR 101 , O, S, or CR 102 R 103 ;

Y 3 , Z 3 and R 101 , 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 102 and R 103 , 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 R 102 and R 103 may be linked to each other to form a ring(s).

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

wherein,

L 1 represents a single bond, a substituted or unsubstituted (C6-C30)arylene, or a substituted or unsubstituted (5- to 30-membered)heteroarylene;

Ar 1 represents a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (5- to 30-membered)heteroaryl;

Ar 3 and Ar 4 , each independently, represent hydrogen, deuterium, a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (5- to 30-membered)heteroaryl, with a proviso that Ar 3 and Ar 4 are not simultaneously hydrogen;

R 1 to 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;

D n represents that n hydrogens are replaced with deuterium; and

n represents an integer of 8 or more.

15. The organic electroluminescent compound according to claim 14 , wherein at least four of R 1 to R 8 represent deuterium.

16. The organic electroluminescent compound according to claim 14 , wherein the compound represented by formula 1-1 is selected from the group consisting of the following compounds:

17. An organic electroluminescent device comprising the organic electroluminescent compound according to claim 14 .

18. The organic electroluminescent device according to claim 17 , wherein the organic electroluminescent compound is comprised in a light-emitting layer.