Plurality of host materials and organic electroluminescent device comprising the same

1 . A plurality of host materials comprising a first host material comprising the compound represented by the following formula 1-1 or 1-4 and a second host material comprising the compound represented by the following formula 2:

wherein,

Ar represents a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (3- to 30-membered) heteroaryl containing at least one of N, O, and S, or —NX 9 X 10 ;

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

X 9 and X 10 each independently represent a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C3-C30)cycloalkyl, a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (3- to 30-membered) heteroaryl; and

V each independently represents CX 18 X 19 , NX 20 , O, or S;

X 20 represents a deuterium-substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (3- to 30-membered) heteroaryl;

X 18 , X 19 , X 21 , X 22 , and X 27 to X 29 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 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

c, d and i each independently represent an integer of 1 to 6, j and k each independently represent an integer of 1 to 4, when c, d, i, j and k are 2 or more, each of X 21 , each of X 22 , each of X 27 , each of X 28 , and each of X 29 may be the same or different:

wherein,

X represents —O—;

HAr represents a substituted or unsubstituted (3- to 30-membered) heteroaryl containing at least one nitrogen atom;

L 2 represents a single bond, a substituted or unsubstituted (C6-C30)arylene, or a substituted or unsubstituted (3- to 30-membered)heteroarylene;

R 1 and R 2 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 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 adjacent substituents to form a ring; and

a represents an integer of 1 to 4, b represents an integer of 1 to 3, when a and b are 2 or more, each of R 1 and each of R 2 may be the same or different.

2 . The plurality of host materials according to claim 1 , wherein the substituents of the substituted alkyl, the substituted cycloalkyl, the substituted aryl, the substituted arylene, the substituted heteroaryl, the substituted heteroarylene, 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 are at least one selected from the group consisting of deuterium; halogen; cyano; carboxyl; nitro; hydroxyl; (C1-C30)alkyl; halo(C1-C30)alkyl; (C2-C30)alkenyl; (C2-C30)alkynyl; (C1-C30)alkoxy; (C1-C30)alkylthio; (C3-C30)cycloalkyl; (C3-C30)cycloalkenyl; (3- to 7-membered) heterocycloalkyl; (C6-C30)aryloxy; (C6-C30)arylthio; at least one of (C1-C30)alkyl-, (C6-C30)aryl- and di(C6-C30)arylamino-substituted or unsubstituted (3- to 50-membered) heteroaryl; at least one of cyano-, (C1-C30)alkyl-, (3- to 50-membered) heteroaryl-, di(C6-C30)arylamino- and tri(C6-C30)arylsilyl-substituted or unsubstituted (C6-C30)aryl; tri(C1-C30)alkylsilyl; tri(C6-C30)arylsilyl; di(C1-C30)alkyl(C6-C30)arylsilyl; (C1-C30)alkyldi(C6-C30)arylsilyl; amino; mono- or di-(C1-C30)alkylamino; mono- or di-(C6-C30)arylamino; (C1-C30)alkyl(C6-C30)arylamino; (C1-C30)alkylcarbonyl; (C1-C30)alkoxycarbonyl; (C6-C30)arylcarbonyl; di(C6-C30)arylboronyl; di(C1-C30)alkylboronyl; (C1-C30)alkyl(C6-C30)arylboronyl; (C6-C30)ar(C1-C30)alkyl; and (C1-C30)alkyl(C6-C30)aryl.

3 . The plurality of host materials according to claim 1 , wherein Ar is a substituted or unsubstituted phenyl, a substituted or unsubstituted naphthyl, a substituted or unsubstituted biphenyl, a substituted or unsubstituted terphenyl, a substituted or unsubstituted spirobifluorenyl, a substituted or unsubstituted pyridyl, a substituted or unsubstituted triazinyl, a substituted or unsubstituted pyrimidinyl, a substituted or unsubstituted quinolyl, a substituted or unsubstituted quinazolinyl, a substituted or unsubstituted quinoxalinyl, a substituted or unsubstituted benzoquinazolinyl, a substituted or unsubstituted benzoquinoxalinyl, a substituted or unsubstituted benzofuropyrimidinyl, a substituted or unsubstituted carbazolyl, a substituted or unsubstituted dibenzothiophenyl, a substituted or unsubstituted benzothiophenyl, a substituted or unsubstituted dibenzofuranyl, a substituted or unsubstituted benzofuranyl, a substituted or unsubstituted naphthyridinyl, a substituted or unsubstituted fluorenyl, a substituted or unsubstituted benzofluorenyl, a substituted or unsubstituted triphenylenyl, a substituted or unsubstituted benzonaphthofuranyl, or a substituted or unsubstituted benzonaphthothiophenyl.

4 . The plurality of host materials according to claim 1 , wherein the formula 2 is represented by at least one of the following formulae 2-1 and 2-2:

wherein,

X, R 1 , R 2 , L 2 , a, and b are as defined in claim 1 ;

A ring represents a substituted or unsubstituted (6- to 10-membered) ring;

Y 1 to Y 5 , and Y 11 to Y 13 each independently represent N or CR 3 ; and

R 3 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 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 adjacent R 3 s may be linked to each other to form a ring.

5 . The plurality of host materials according to claim 1 , wherein HAr is a substituted or unsubstituted triazinyl, a substituted or unsubstituted pyridyl, a substituted or unsubstituted pyrimidinyl, a substituted or unsubstituted quinazolinyl, a substituted or unsubstituted benzoquinazolinyl, a substituted or unsubstituted quinoxalinyl, a substituted or unsubstituted benzoquinoxalinyl, a substituted or unsubstituted quinolyl, a substituted or unsubstituted benzoquinolyl, a substituted or unsubstituted isoquinolyl, a substituted or unsubstituted benzoisoquinolyl, a substituted or unsubstituted triazolyl, a substituted or unsubstituted pyrazolyl, a substituted or unsubstituted naphthyridinyl, a substituted or unsubstituted benzothienopyrimidinyl, a substituted or unsubstituted carbazolyl, or a substituted or unsubstituted pyridopyrazinyl.

6 . The plurality of host materials according to claim 1 , wherein the compound represented by formula 1-1 or 1-4 is at least one selected from the group consisting of:

7 . The plurality of host materials according to claim 1 , wherein the compound represented by formula 2 is at least one selected from the group consisting of:

8 . 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 the plurality of host materials according to claim 1 .

9 . An organic electroluminescent compound represented by the following formula 2-1-1:

wherein,

X a represents O or S;

L a represents an unsubstituted naphthylene except 1,2-naphthylene structure; and

Ar a represents an unsubstituted phenyl, an unsubstituted naphthyl, an unsubstituted biphenyl, or an unsubstituted terphenyl; and

Ar b represents an unsubstituted naphthyl, an unsubstituted biphenyl, or an unsubstituted terphenyl.

10 . The organic electroluminescent compound according to claim 9 , wherein the compound represented by formula 2-1-1 is selected from the group consisting of:

11 . An organic electroluminescent device comprising the organic electroluminescent compound according to claim 9 .

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