PLURALITY OF HOST MATERIALS, ORGANIC ELECTROLUMINESCENT COMPOUND, AND ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAME
The present disclosure relates to a plurality of host materials, an organic electroluminescent compound, and an organic electroluminescent device comprising the same. By comprising a specific combination of compounds according to the present disclosure as a plurality of host materials, or by comprising the compound according to the present disclosure, an organic electroluminescent device having improved driving voltage, luminous efficiency and/or lifespan characteristics compared to conventional organic electroluminescent devices can be provided.
1 . A plurality of host materials comprising at least one first host compound and at least one second host compound, wherein the first host compound is represented by the following Formula 1, and the second host compound is represented by following Formula 2:
in Formula 1,
one of X 1 and X 2 represents —N═, and the other represents —O— or —S—;
R represents a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (3- to 30-membered)heteroaryl;
ring A represents (C6-C12)arene;
L 1 and L 2 each independently represent a single bond, a substituted or unsubstituted (C6-C30)arylene, or a substituted or unsubstituted (3- to 30-membered)heteroarylene; and
Ar 1 to Ar 4 each independently represent a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (3- to 30-membered)heteroaryl;
in Formula 2,
T 5 and T 6 , T 7 and T 8 , or both thereof are linked to each other to form a ring of the following Formula 3;
in Formulas 2 and 3,
T 1 to T 4 , T 9 to T 14 , and T 5 to T 8 that do not form a ring(s) 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), 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 mono- or di-(C6-C30)arylamino, a substituted or unsubstituted (C1-C30)alkyl(C6-C30)arylamino, a substituted or unsubstituted mono- or di-(3- to 30-membered)heteroarylamino, 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 (C6-C30)aryl(3- to 30-membered)heteroarylamino, or -L 3 -Ar 5 , provided that at least one of T 1 to T 14 represents -L 3 -Ar 5 ;
L 3 each independently represents a single bond, a substituted or unsubstituted (C6-C30)arylene, or a substituted or unsubstituted (3- to 30-membered)heteroarylene;
Ar 5 each independently represents a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (3- to 30-membered)heteroaryl;
represents a fusion site with Formula 2; and
the heteroaryl and the heteroarylene contain one or more heteroatoms selected from B, N, O, S, Si and P.
2 . The plurality of host materials according to claim 1 , wherein the substituent(s) of the substituted alkyl, the substituted aryl, the substituted arylene, the substituted heteroaryl, the substituted heteroarylene, the substituted cycloalkyl, the substituted alkoxy, the substituted trialkylsilyl, the substituted dialkylarylsilyl, the substituted alkyldiarylsilyl, the substituted triarylsilyl, the substituted fused ring group of an aliphatic ring(s) and an aromatic ring(s), the substituted mono- or di-alkylamino, the substituted mono- or di-alkenylamino, the substituted alkylalkenylamino, the substituted mono- or di-arylamino, the substituted alkylarylamino, the substituted mono- or di-heteroarylamino, the substituted alkylheteroarylamino, the substituted alkenylarylamino, the substituted alkenylheteroarylamino, and the substituted arylheteroarylamino are each independently at least one selected from the group consisting of deuterium; a halogen; a cyano; a carboxyl; a nitro; a hydroxyl; a phosphine oxide; 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 (3- to 30-membered)heteroaryl unsubstituted or substituted with at least one of a (C1-C30)alkyl(s) and a (C6-C30)aryl(s); a (C6-C30)aryl unsubstituted or substituted with at least one of deuterium, a cyano(s), a halogen(s), a (C1-C30)alkyl(s), a (C3-C30)cycloalkyl(s), a tri(C1-C30)alkylsilyl(s), a tri(C6-C30)arylsilyl(s), a (C6-C30)aryl(s), and a (3- 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; a fused ring group of a (C3-C30) aliphatic ring(s) and a (C6-C30) aromatic ring(s); an amino; a mono- or di-(C1-C30)alkylamino; a mono- or di-(C2-C30)alkenylamino; a (C1-C30)alkyl(C2-C30)alkenylamino; a mono- or di-(C6-C30)arylamino; a (C1-C30)alkyl(C6-C30)arylamino; a mono- or di-(3- to 30-membered)heteroarylamino; 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; 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 host materials according to claim 1 , wherein Formula 1 is represented by at least one of the following Formulas 4 to 6:
in Formulas 4 to 6, R, X 1 , X 2 , L 1 , L 2 , and Ar 1 to Ar 4 are as defined in claim 1 .
4 . The plurality of host materials according to claim 1 , wherein R and Ar 1 to Ar 4 in Formula 1 are each independently a substituted or unsubstituted phenyl, a substituted or unsubstituted naphthyl, a substituted or unsubstituted biphenyl, a substituted or unsubstituted terphenyl, a substituted or unsubstituted phenanthrenyl, a substituted or unsubstituted fluorenyl, a substituted or unsubstituted benzofluorenyl, a substituted or unsubstituted triphenylenyl, a substituted or unsubstituted spirobifluorenyl, 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 benzonaphthofuranyl, or a substituted or unsubstituted benzonaphthothiophenyl.
5 . The plurality of host materials according to claim 1 , wherein Formula 2 is represented by at least one of the following Formulas 2-1 and 2-2:
in Formulas 2-1 and 2-2,
T 1 to T 4 and T 9 to T 14 are as defined in claim 1 , and
T 5 to T 8 are as defined for T 5 to T 8 which do not form a ring(s) in claim 1 .
6 . The plurality of host materials according to claim 1 , wherein Formula 2 is represented by at least one of the following Formulas:
in the above Formulas,
T 1 to T 14 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), 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 mono- or di-(C6-C30)arylamino, a substituted or unsubstituted (C1-C30)alkyl(C6-C30)arylamino, a substituted or unsubstituted mono- or di-(3- to 30-membered)heteroarylamino, 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, or a substituted or unsubstituted (C6-C30)aryl(3- to 30-membered)heteroarylamino, and
L 3 and Ar 5 are as defined in claim 1 .
7 . The plurality of host materials according to claim 1 , wherein Ar 5 in Formula 2 is a substituted or unsubstituted triazinyl, a substituted or unsubstituted pyrimidinyl, a substituted or unsubstituted quinolyl, a substituted or unsubstituted isoquinolyl, a substituted or unsubstituted benzothienoquinolyl, a substituted or unsubstituted naphthyridinyl, a substituted or unsubstituted quinazolinyl, a substituted or unsubstituted quinoxalinyl, a substituted or unsubstituted benzoquinazolinyl, a substituted or unsubstituted dibenzoquinazolinyl, a substituted or unsubstituted benzoquinoxalinyl, a substituted or unsubstituted dibenzoquinoxalinyl, a substituted or unsubstituted benzofuropyrimidinyl, a substituted or unsubstituted acenaphthopyrimidinyl, 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 benzonaphthofuranyl, a substituted or unsubstituted benzonaphthothiophenyl, a substituted or unsubstituted benzoimidazolyl, or a substituted or unsubstituted phenanthroimidazolyl.
8 . The plurality of host materials according to claim 1 , wherein the compound represented by Formula 1 is at least one selected from the following compounds:
9 . The plurality of host materials according to claim 1 , wherein the compound represented by Formula 2 is at least one selected from the following compounds:
10 . An organic electroluminescent compound represented by the following Formula 11:
in Formula 11,
one of X 1 and X 2 represents —N═, and the other represents —O— or —S—;
R represents a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (3- to 30-membered)heteroaryl;
ring A represents a (C6-C12)arene; and
Ar 1 to Ar 4 each independently represent a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (3- to 30-membered)heteroaryl;
provided that, when ring A is benzene, —N(Ar 1 )(Ar 2 ) and —N(Ar 3 )(Ar 4 ) are at an ortho or meta position to each other.
11 . The organic electroluminescent compound according to claim 10 , wherein R is a substituted or unsubstituted phenyl, a substituted or unsubstituted biphenyl, a substituted or unsubstituted terphenyl, a substituted or unsubstituted naphthyl, a substituted or unsubstituted phenylnaphthyl, a substituted or unsubstituted naphthylphenyl, a substituted or unsubstituted phenanthrenyl, a substituted or unsubstituted dibenzofuranyl, or a substituted or unsubstituted dibenzothiophenyl.
12 . The organic electroluminescent compound according to claim 10 , wherein the compound represented by Formula 11 is at least one selected from the following compounds:
13 . 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 .
14 . An organic electroluminescent material comprising the organic electroluminescent compound according to claim 10 .
15 . An organic electroluminescent device comprising the organic electroluminescent compound according to claim 10 .