Anthracene derivative and preparation method and application thereof

Abstract

The invention discloses an anthracene derivative and a preparation method and application thereof. The anthracene derivative is prepared by mixing bromo-anthracene, tetraphenylnaphthaleneboronic acidand a catalyst and carrying out Suzuki reaction in the presence of strong base under the protection of inert gas. By introducing a tetraphenyl naphthalene group, the carrier injection and transmissionof the anthracene derivative are more balanced; the charge transfer effect between an electron donor and an acceptor is balanced, the dark blue emission of a solid-state thin film can be maintained while the aggregation-state high fluorescence quantum efficiency of the solid-state thin film is achieved, and organic light-emitting small molecules with good carrier transport capacity and high fluorescence quantum yield in an aggregation state are synthesized.

Description

technical field [0001] The present invention relates to the field of organic luminescent materials, and more specifically, to an anthracene derivative and its preparation method and application. Background technique [0002] With the rise of high-tech products such as large-screen smartphones, tablet computers, and wearable devices, traditional liquid crystal display materials are becoming more and more difficult to meet the increasingly thinner and lower power consumption requirements of mobile terminals. Humans have begun to pay attention to organic electroluminescent devices with advantages such as higher flexibility, thinner thickness, lower power consumption, wider viewing angle, and higher color saturation. Among them, OLED devices are of decisive significance to display technologies such as full-color display and solid-state lighting. So far, although there have been many reports on anthracene-based light-emitting materials used in small-molecule organic electrolumin...

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Problems solved by technology

So far, although there have been many reports on anthracene-based light-emitting materials used in small-molecule organic electroluminescent devices, most of them are in the aggregated state due to the formation of π-π stacking due to the planar structure of the molecules, resulting in the quenching of their fluorescence. , thereby reducing the device efficiency

[0003] Anthracene-based light-emitting materials modified with traditional groups, due to the general electron transport and hole transport capabilities of their molecules, lead to unbalanced carrier transport and poor device performance in devices using it as the light-emitting layer

Moreover, due to the strong electron-donating or electron-withdrawing ability between the modifying group and the anthracene group, the modified molecule has a serious intramolecular charge transfer phenomenon, which makes the luminescence red-shifted and the color purity is not enough, which affects the application of the material.

Chinese patent CN108586367A discloses an organic luminescent material. The organic luminescent material is a structure in which an asymmetric anthracene is connected to a triazine with good electron transport performance. It is obtained by modifying the structure of anthracene-containing derivatives. Reach the deep blue emission of international standard OLED devices (x+y<0.30)

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