Binaphthyl derivative, and material and organic electroluminescent device which contain binaphthyl derivative

Abstract

The invention discloses a binaphthyl derivative, and a material and an organic electroluminescent device which contain the binaphthyl derivative. The structure of the binaphthyl derivative is represented by formula I. The binaphthyl derivative represented by formula I possesses deep blue fluorescence performance, is capable of avoiding aggregation-caused quenching effect of fluorescent materials,and is relatively high in vitrification point, heat stability, and excellent in luminescent performance. The synthesis process is simple; a purification method is simple and is suitable for large-scale production; the luminescent performance and heat stability of products can be adjusted through connection with different groups; and the binaphthyl derivative is an ideal selection for organic luminescent layers of organic electroluminescent devices. The OLED devices prepared from the fluorescence material are high in fluorescent layer fluorescence efficiency, and stability, so that device fluorescence efficiency and service life are capable of satisfying practical requirements.

Description

technical field [0001] The invention relates to the technical field of organic electroluminescence. More specifically, it relates to a binaphthyl derivative, a material comprising the binaphthyl derivative, and an organic electroluminescent device. Background technique [0002] Organic electroluminescence (referred to as OLED) and related research As early as 1963, pope et al. first discovered the electroluminescence phenomenon of organic compound single crystal anthracene. In 1987, Kodak Corporation of the United States made an amorphous film device by evaporating organic small molecules, which reduced the driving voltage to less than 20V. This type of device is ultra-thin, fully cured, self-illuminating, high brightness, wide viewing angle, fast response, low driving voltage, low power consumption, bright color, high contrast, simple process, good temperature characteristics, and can realize flexible display And other advantages, can be widely used in flat panel displays...

AI Technical Summary

Problems solved by technology

[0005] So far, many blue-light materials have been reported in the literature, and the structures of these materials can be roughly classified into anthracene derivatives, stilbene aromatic derivatives, pyrene derivatives, fluorene and spirofluorene, among which anthracene Derivatives such as 9,10-diphenylanthracene (DPA) and 9,10-bis(2-naphthyl)anthracene (ADN) are the progenitor materials used in organic electroluminescent components, although they have high fluorescence quantum efficiency and Good stability and other advantages, but its unstable film is one of the important reasons for accelerating device degradation and causing poor device life

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