Organic electroluminescent compounds and organic electroluminescent device comprising the same

Patent metadata

Field	Value
Publication number	US-12391875-B2
Application number	US-202318475585-A
Country	US
Kind code	B2
Filing date	Sep 27, 2023
Priority date	Aug 19, 2015
Publication date	Aug 19, 2025
Grant date	Aug 19, 2025

Abstract

The present disclosure relates to organic electroluminescent compounds and an organic electroluminescent device comprising the same. The organic electroluminescent compound according to the present disclosure may be comprised in a light-emitting layer or an electron buffer layer, and is effective to produce an organic electroluminescent device having low driving voltage, excellent current and power efficiencies, and significantly improved operative lifespan.

First claim

The invention claimed is:

1. An organic electroluminescent device comprising an organic electroluminescent compound;
X 1 represents —N═, —NR 7 —, —O—, or —S—;
Y 1 represents —N═, —NR 8 —, —O—, or —S—;
with the provisos that when X 1 represents —N═, then Y 1 represents —NR 8 —, —O—, or —S—, and when X 1 represents —NR 7 —, then Y 1 represents —N═, —O—, or —S—, with the provisos that X 1 and Y 1 are not simultaneously —O—; X 1 and Y 1 are not simultaneously —S—; X 1 and Y 1 are not —O— and —S—, respectively; and X 1 and Y 1 are not —S— and —O—, respectively;
R 1 represents a substituted or unsubstituted (C6-C30) aryl, or a substituted or unsubstituted (3 to 30-membered) heteroaryl;
R 2 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 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;
R 3 to R 8 , 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 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 are linked to an adjacent substituent(s) to form a substituted or unsubstituted, mono- or polycyclic, (C3-C30) alicyclic or aromatic ring, whose carbon atom(s) may be replaced with at least one heteroatom selected from nitrogen, oxygen, and sulfur;
a represents 1; b and c, each independently, represent 1 or 2; d represents an integer of 1 to 4;
the electroluminescent compound is a host material.

Assignees

• Rohm & Haas Elect Materials Korea Ltd
• Dupont Specialty Materials Korea Ltd

Inventors

• Ahn Hee-Choon

Classifications

• H10K85/6576

  comprising only sulfur in the heteroaromatic polycondensed ring system, e.g. benzothiophene · CPC title

• H10K85/6572

  comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole · CPC title

• H10K85/657

  Polycyclic condensed heteroaromatic hydrocarbons · CPC title

• H10K85/654

  comprising only nitrogen as heteroatom (H10K85/652 takes precedence) · CPC title

• H10K85/636

  comprising heteroaromatic hydrocarbons as substituents on the nitrogen atom · CPC title