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US 2021/0198567 A1Published application
Organic electroluminescent compound, a plurality of host materials and organic electroluminescent device comprising the same
OwnerJi-Song Jun, Young-Kwang Kim +2inventors
InventorsJi-Song Jun, Young-Kwang Kim, Kyoung-Jin Park, So-Mi Park
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Abstract
The present disclosure relates to an organic electroluminescent compound represented by formula 1, a plurality of host materials comprising a specific combination of compounds, and an organic electroluminescent device comprising the same. By comprising the organic electroluminescent compound or the specific combination of compounds according to the present disclosure as host materials, it is possible to provide an organic electroluminescent device with a longer lifetime property compared to conventional organic electroluminescent devices.
Claims13
A plurality of host materials comprising a first host material comprising a compound represented by the following formula 1, and a second host material comprising a compound represented by the following formula 2, wherein the compound represented by the following formula 1 and the compound represented by the following formula 2 are different from each other:
- wherein
- W represents a single bond, O, S, CR6R7, or N-L-R8;
- Y represents O, S, CR6R7, or N-L-R8;
- L, each independently, represents a single bond, a substituted or unsubstituted (C6-C30)arylene, or a substituted or unsubstituted (3- to 30-membered)heteroarylene;
- R1 to R8, 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 tri(C1-C30)alkylsilyl, a substituted or unsubstituted di(C1-C30)alkyl(C6-C30)arysilyl, 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 (C1-C30)alkyl(C6-C30)arylamino, or a substituted or unsubstituted mono- or di-(C6-C30)arylamino;
- or adjacent ones of R1 to R8 may be linked to each other to form a ring(s);
- and
- a to d, each independently, represent an integer of 1 to 4;
- and e represents an integer of 1 or 2;
- where each of a to e is an integer of 2 or more, each of R1, each of R2, each of R3, each of R4, and each of R5 may be the same or different;
- wherein
- L1 represents a single bond, or a substituted or unsubstituted (C6-C30)arylene;
- Ar1 represents a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted nitrogen-containing (13- to 30-membered)heteroaryl;
- R9 and R10, each independently, represent 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 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 mono- or di-(C1-C30)alkylamino, a substituted or unsubstituted (C1-C30)alkyl(C6-C30)arylamino, or a substituted or unsubstituted mono- or di-(C6-C30)arylamino;
- or adjacent ones of R9 and R10 may be linked to each other to form a substituted or unsubstituted ring(s);
- with the proviso that if R9 or R10 represents a substituted (C6-C30)aryl, the substituent of the substituted (C6-C30)aryl is not a carbazolyl or a dibenzofuranyl;
- if R9 or R10 forms a substituted ring, the substituent of the substituted ring does not comprise a triazinyl;
- and if R9 or R10 represents a substituted or unsubstituted carbazolyl, R9 or R10 is linked to the backbone at a 9 position of the carbazolyl;
- and
- f and g, each independently, represent an integer of 0 to 4, with the proviso that f and g are not zero at the same time;
- where each of f and g is an integer of 2 or more, each of R9 and each of R10 may be the same or different.
18 more elements
An organic electroluminescent compound represented by the following formula 1:
- wherein
- W represents a single bond, O, S, CR6R7, or N-L-R8;
- Y represents O, S, CR6R7, or N-L-R8;
- L, each independently, represents a single bond, a substituted or unsubstituted (C6-C30)arylene, or a substituted or unsubstituted (3- to 30-membered)heteroarylene;
- R1 to R8, 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 tri(C1-C30)alkylsilyl, a substituted or unsubstituted di(C1-C30)alkyl(C6-C30)arysilyl, 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 (C1-C30)alkyl(C6-C30)arylamino, or a substituted or unsubstituted mono- or di-(C6-C30)arylamino;
- or adjacent ones of R1 to R8 may be linked to each other to form a ring(s);
- at least one of R1 to R5 comprises a substituted or unsubstituted nitrogen-containing (3- to 30-membered)heteroaryl;
- with the proviso that if Y represents N-L-R8, at least one of R3 to R5 comprises a substituted or unsubstituted nitrogen-containing (3- to 30-membered)heteroaryl;
- if Y N-L-R8, R4 is not a 9-phenylcarbazolyl or a (9-carbazolyl)phenyl;
- and
- a to d, each independently, represent an integer of 1 to 4;
- and e represents an integer of 1 or 2;
- where each of a to e is an integer of 2 or more, each of R1, each of R2, each of R3, each of R4, and each of R5 may be the same or different
10 more elements
Dependencies are inferred from the claim text.