US2022216430A1PendingUtilityA1
Multi-component host material and an organic electroluminescence device comprising the same
Assignee: ROHM & HAAS ELECT MATERIALS KOREA LTDPriority: Apr 18, 2014Filed: Mar 8, 2022Published: Jul 7, 2022
Est. expiryApr 18, 2034(~7.7 yrs left)· nominal 20-yr term from priority
Inventors:Hee-Choon AhnYoung Kwang KimSu-Hyun LeeJi-Song JunSeon-Woo LeeChi-Sik KimKyoung-Jin ParkNam-Kyun KimKyung-Hoon ChoiJae Hoon ShimYoung Jun ChoKyung-Joo Lee
C07D 401/10C07D 209/86C09K 2211/1029C09K 11/06C09K 2211/1007C09K 2211/185C07D 209/88C07D 401/14C07D 409/14C07D 491/04C07D 495/04C07D 487/04C09K 11/025C09K 2211/1088C07F 15/0033C07D 405/14C07D 401/04H01L 51/0072H01L 51/0074H01L 51/0094H01L 51/0073H01L 51/0052H01L 51/0085H01L 51/5016H01L 51/0067H01L 51/0071H10K 50/12H10K 85/6576H10K 2101/90H10K 85/342H10K 85/6574H10K 85/636H10K 2101/10H10K 85/6572H10K 85/657H10K 85/654H10K 50/156H10K 85/40H10K 85/615H10K 50/11
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Claims
Abstract
The present invention relates to a multi-component host material and an organic electroluminescent device comprising the same. By comprising a specific combination of the multi-component host compounds, the organic electroluminescent device according to the present invention can provide high luminous efficiency and excellent lifespan characteristics.
Claims
exact text as granted — not AI-modified1 . An organic electroluminescent device comprising at least one light-emitting layer between an anode and a cathode, wherein the light-emitting layer comprises a host and a phosphorescent dopant, the host consists of multi-component host compounds, at least a first host compound of the multi-component host compounds is represented by the following formula 3, and a second host compound is represented by the following formula 2:
wherein
A 1 and A 2 each independently represent a (C6-C18)aryl unsubstituted or substituted with deuterium;
L 1 is represented by the following formula 7;
Xi to Xl each independently represent hydrogen or deuterium;
X 1 to X 5 , X 7 to X 10 and X 12 to X 16 each independently represent hydrogen, deuterium, a (C6-C60)aryl unsubstituted or substituted with deuterium, or a (3- to 30-membered)heteroaryl unsubstituted or substituted with deuterium;
wherein
Ma represents a substituted or unsubstituted triazinyl;
La represents a single bond, or a (C6-C30)arylene unsubstituted or substituted with deuterium;
Xa to Xh each independently represent hydrogen, deuterium, a (C6-C60)aryl unsubstituted or substituted with deuterium, dibenzofuranyl unsubstituted or substituted with deuterium, or dibenzothiophenyl unsubstituted or substituted with deuterium; provided that at least one of Xa to Xh is dibenzofuranyl unsubstituted or substituted with deuterium, or dibenzothiophenyl unsubstituted or substituted with deuterium.
2 . The organic electroluminescent device according to claim 1 , wherein in formula 3,
A 1 and A 2 each independently are selected from the group consisting of phenyl, biphenyl, terphenyl and naphthyl.
3 . The organic electroluminescent device according to claim 1 , wherein in formula 2,
La is a single bond, or represented by one of the following formulae 7 to 19:
wherein
Xi to Xp each independently represent hydrogen or deuterium.
4 . The organic electroluminescent device according to claim 1 , wherein the compound represented by formula 3 is selected from the group consisting of:
5 . The organic electroluminescent device according to claim 1 , wherein the compound represented by formula 2 is selected from the group consisting of:Join the waitlist — get patent alerts
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