Aryl pyridine ring-contained carbazole compounds and application thereof

Abstract

The invention relates to a compound with a general formula represented by formula (1). In the formula (1), Ar1, Ar2 and Ar3 are substituent groups, at least two groups of the substituent groups are pyridine ring-contained C5-60 aromatic groups, the residual groups is respectively and independently selected from hydrogen, a C1-C40 alkyl group, a C5-50 aromatic group, a nitrogen-contained C5-50 heterocyclic ring, and n is 1 or 2. The invention also relates to a purpose of the compounds in organic electroluminescent devices, especially electrophosphorescent devices as a matrix material of phosphorescent adulterants in the electrophosphorescent devices.

Description

technical field [0001] The invention relates to a novel compound and its application in the technical field of organic electroluminescence display. Background technique [0002] Organic electroluminescence (hereinafter referred to as OLED) and corresponding research began as early as the 1960s. In 1963, p.pope and others first discovered the electroluminescence phenomenon of organic single crystal anthracene, but due to the limitation of technical conditions, its driving voltage was as high as 400V, which failed to attract widespread attention. In 1987, C.W.Tang et al. of Kodak Corporation of the United States made an amorphous film device by vapor-depositing Alq3 and HTM-2, which reduced the driving voltage to less than 20V, and OLED attracted the attention of the world (US4356429). Due to the advantages of high brightness, wide viewing angle, fast photoelectric response, low voltage, low power consumption, rich colors, high contrast, light and thin structure, and simple p...

AI Technical Summary

Problems solved by technology

However, it is worth noting that most host materials still use FIrpic as a dye to realize blue phosphorescent devices, and the luminous efficiency of FIrpic blue phosphorescent devices with different host materials varies greatly.

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