Dianthracene compounds containing pyridyl at terminals and application thereof

Abstract

The invention provides dianthracene compounds shown in a general formula I in the specification. In the general formula I, L1 and L2 independently represent single bonds, substituted or unsubstituted heterocyclic aromatic groups of C2-C60 or substituted or unsubstituted hydrocarbon aromatic groups of C6-C60; L3 represents a substituted or unsubstituted heterocyclic aromatic group of C2-C60 or a substituted or unsubstituted hydrocarbon aromatic group of C6-C60; R10, R11, R12, R13, R14, R15, R16, R17, R18, R21, R23, R24, R25, R26, R27 and R28 independently represent hydrogen, halogen and substituted or unsubstituted alkyl or alkoxy of C1-C10. The compounds have good luminescence properties, high electron transport capacities and terrific solubility and can be used in luminescent materials, electron transport materials and hole-blocking materials in the electroluminescence field. The invention also provides an organic electroluminescence device at least comprising a pair of electrodes and organic luminescent media between the electrodes. The organic luminescent media at least comprise the dianthracene compounds.

Description

technical field [0001] The invention relates to a dianthracene compound containing a pyridyl group at the end, and the dianthracene compound can be applied to the field of electroluminescence. Background technique [0002] Since Deng Qingyun published an article on Applied Physics Letters (Appl. Academia and industry are of great importance. In the field of display, OLED combines the characteristics of cathode ray tube and liquid crystal display, has a large viewing angle, low power consumption, and bright colors, and is known as the next-generation dream display. In the field of lighting, OLED, as the only technology that can truly realize surface light source, has soft and non-glare luminescence, is green and environmentally friendly, and is a healthy light source that is closest to natural light. It is known as the most energy-saving and healthy lighting source in the history of human development. [0003] The use of high-performance luminescent materials is an importan...

AI Technical Summary

Problems solved by technology

[0005] However, in the existing literature reports, most of the 2,9'-dianthracene compounds are hydrocarbon compounds, which only have a single light-emitting performance and poor transmission performance. When applied to the field of electroluminescence, the power consumption of the device will increase. Shorter lifetime, chromaticity deviation, etc., urgently need to develop materials with both luminous performance and transmission performance

CN101395105A reports a class of dianthracene compounds containing carbazole and benzimidazole groups, but the synthesis route is complicated, the solubility is low and the purification is difficult, which is not conducive to industrial production

Overcome the disadvantages of poor transmission performance of traditional hydrocarbon dianthracene compounds

Images