US 11,856,850 B2
Plurality of host materials and organic electroluminescent device comprising the same
Bitnari Kim, Gyeonggi-do (KR); Su-Hyun Lee, Gyeonggi-do (KR); So-Young Jung, Gyeonggi-do (KR); Hyo-Soon Park, Gyeonggi-do (KR); Tae-Jun Han, Gyeonggi-do (KR); Young-Jun Cho, Gyeonggi-do (KR); and Sang-Hee Cho, Gyeonggi-do (KR)
Assigned to Rohm and Haas Electronic Materials Korea Ltd.
Appl. No. 16/640,082
Filed by ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD., Chungcheongnam-do (KR)
PCT Filed Sep. 21, 2018, PCT No. PCT/KR2018/011199
§ 371(c)(1), (2) Date Feb. 19, 2020,
PCT Pub. No. WO2019/059695, PCT Pub. Date Mar. 28, 2019.
Claims priority of application No. 10-2017-0122681 (KR), filed on Sep. 22, 2017; and application No. 10-2018-0095843 (KR), filed on Aug. 17, 2018.
Prior Publication US 2020/0212310 A1, Jul. 2, 2020
Int. Cl. H10K 85/60 (2023.01); C07D 239/74 (2006.01); C07D 241/42 (2006.01); C07D 251/24 (2006.01); C07D 487/04 (2006.01); C09K 11/02 (2006.01); C09K 11/06 (2006.01); H10K 50/11 (2023.01); H10K 101/10 (2023.01); H10K 101/00 (2023.01)
CPC H10K 85/6572 (2023.02) [C07D 239/74 (2013.01); C07D 241/42 (2013.01); C07D 251/24 (2013.01); C07D 487/04 (2013.01); C09K 11/025 (2013.01); C09K 11/06 (2013.01); H10K 85/654 (2023.02); H10K 85/6574 (2023.02); H10K 85/6576 (2023.02); C09K 2211/1018 (2013.01); H10K 50/11 (2023.02); H10K 2101/10 (2023.02); H10K 2101/90 (2023.02)] 6 Claims
 
1. An organic electroluminescent device comprising an anode, a cathode, and at least one light-emitting layer between the anode and the cathode, wherein at least one layer of the light-emitting layer comprises a plurality of host materials,
wherein
the plurality of host materials comprising a first host material and a second host material, wherein the first host material comprises a compound represented by the following formula 1:

OG Complex Work Unit Chemistry
wherein
L1 and L2, each independently, represent a single bond, a substituted or unsubstituted (C6-C30)arylene, or a substituted or unsubstituted (3- to 30-membered)heteroarylene;
Ar1 and Ar2, each independently, represent a substituted or unsubstituted (C6-C30)aryl, a substituted or unsubstituted (3- to 30-membered)heteroaryl, an amino, 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;
A represents a naphthalene ring;
B represents a benzene ring,
R1 to R3, 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 (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 each of R1 to R3 may be linked to each other to form a substituted or unsubstituted (3- to 30-membered) mono- or polycyclic ring;
a represents an integer of 1 to 6;
b represents 1 or 2;
c represents an integer of 1 to 4; and
where if a to c, each independently, are an integer of 2 or more, each of R1 to R3 may be the same or different; and
the second host material comprises a compound represented by the following formula 2:
HAr-(L3-Ar3)d  (2)
wherein
HAr represents a substituted or unsubstituted triazine, a substituted or unsubstituted pyrimidine, or a substituted or unsubstituted pyridine;
L3 represents a single bond, or a substituted or unsubstituted (C6-C30)arylene;
Ar3 represents a substituted or unsubstituted (C6-C30)aryl; and
d represents an integer of 1 to 3, where if d is an integer of 2 or more, each (L3-Ar3) may be the same or different.