AROMATIC AMINE COMPOUND COMPRISING QUATERPHENYL STRUCTURE AND ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING SAME

WIPO Patent Application WO/2024/066916

A1

Disclosed are an aromatic amine compound comprising a quaterphenyl structure and an organic electroluminescent device comprising the same. The aromatic amine compound has a structure represented by formula (I). The compound has the following advantages by taking formula (I) as a mother nucleus: In one aspect, the mother nucleus has a relatively large molecular weight, which can effectively improve the glass transition temperature and thermal stability of the aromatic amine compound, and in another aspect, the special connection mode of the mother nucleus can reduce the steric hindrance and improve the LUMO, the energy gap value, and the T1 value of the aromatic amine compound. By applying the aromatic amine compound provided by the present invention to a hole transport layer material or a light-emitting auxiliary layer, the hole transport layer material or the light-emitting auxiliary layer material is more matched with the energy level of the adjacent organic layer, which can significantly improve the light-emitting efficiency of the organic electroluminescent device. The preparation process of the aromatic amine compound is simple and easy to implement, the starting materials are easy to obtain, and the aromatic amine compound is suitable for mass production and scale-up;

LIU SONGYUAN (CN)
WEI TIANYU (CN)
ZHANG JING (CN)
ZHENG SHUANGQUAN (CN)
XU LINGWEI (CN)

PCT/CN2023/116380

April 04, 2024

September 01, 2023

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SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD (CN)

C07D407/12; C07D311/96; C07D405/12

BEIJING JANLEA PATENT AGENCY CO., LTD. (CN)

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