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Luminescent material for delayed fluorescence and organic electroluminescent device comprising the same

專(zhuān)利號(hào)
US11800796B2
公開(kāi)日期
2023-10-24
申請(qǐng)人
Rohm and Haas Electronic Materials Korea Ltd.
發(fā)明人
Jeong-Hwan Jeon; Hong Yeop Na; Hee-Choon Ahn
IPC分類(lèi)
H10K85/60; C09K11/06; C07D491/147; C07D403/04; C07D487/04; C07D401/14; C07D413/04; C07D413/14; C07D401/04; C07D471/04; C07D405/04; C07D409/14; C07D403/14; H10K50/11; C07D405/14
技術(shù)領(lǐng)域
c30,c5,or,compound,delayed,membered,heteroaryl,dopant,aryl,seo2
地域： Cheonan

摘要

The present invention relates to a luminescent material for delayed fluorescence and an organic electroluminescent device comprising the same. By using the luminescent material for delayed fluorescence according to the present invention, an organic electroluminescent device having long lifespan, low driving voltage, excellent color purity, and significantly improved luminous efficiency such as current efficiency is provided.

說(shuō)明書(shū)

  • L represents hydrogen, a substituted or unsubstituted (C5-C30)aryl, or a substituted or unsubstituted 5- to 30-membered heteroaryl; or may be linked to an adjacent substituent to form a substituted or unsubstituted mono- or polycyclic, (C5-C30) alicyclic or aromatic ring, whose carbon atom(s) may be replaced with at least one heteroatom selected from nitrogen, oxygen, sulfur, Si, PO, SO, SO2, and SeO2;
  • Y is independently selected from a single bond, O, S, NR4, Si(R4)2, C(R4)2, PO(R4)2, SO, SO2, and SeO2;
  • i represents an integer of 1 or 2;
  • R4 represents a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C5-C30)aryl, or a substituted or unsubstituted 5- to 30-membered heteroaryl; where there are two R4's, each of the two R4's may be the same or different, and the two R4's may be linked to each other to form a substituted or unsubstituted 11- to 60-membered polycyclic ring; and
  • j represents an integer of 1 to 5; where j is an integer of 2 or more, each of L may be the same or different.

    • The compound of formula 8 can be preferably represented by the following formula 9:

    embedded image

    wherein

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