Tetra-aryl pyrene derivative, preparation method and application thereof and electroluminescent device

Abstract

The invention discloses a tetra-aryl pyrene derivative, a preparation method and application thereof and an electroluminescent device. The tetra-aryl pyrene derivative is a 1,3,5,9-tetra-aryl pyrene derivative and has a structural general formula shown in the specification, wherein Ar represents one of formulae shown in the specification. The tetra-aryl pyrene derivative has a non-planar butterfly-shaped rigid structure; through being connected with other groups of high fluorescence quantum efficiency, the rigidity of a whole compound molecule can be excellently improved, the vitrification transforming temperature of a compound is increased, the stability of light emitting devices is further improved, meanwhile, the accumulation of pi-pi among compound molecules is inhibited, the red shift degree of an electroluminescence spectrum is lowered, and the efficiency of fluorescence emitting devices is increased.

Description

technical field [0001] The invention relates to the field of organic luminescent materials, in particular to a tetraarylpyrene derivative, a preparation method and application, and an electroluminescent device. Background technique [0002] After more than 20 years of development of organic light-emitting diodes (OLEDs), more and more organic light-emitting materials have been developed, and some groups that were first used in blue-light fluorescent light-emitting materials have also been further improved, such as anthracene , naphthalene , Philippine and pyrene etc. have a relatively large energy band width, which can well meet the requirements of blue-light fluorescent light-emitting materials. [0003] From the molecular structural formula of the above materials, it can be found that the groups such as anthracene, naphthalene, phenanthrene and pyrene used in blue-light fluorescent materials have relatively good planarity, so when the structure of their derivatives...

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Problems solved by technology

[0003] From the molecular structural formula of the above materials, it can be found that the groups such as anthracene, naphthalene, phenanthrene and pyrene used in blue-light fluorescent materials have relatively good planarity, so when the structure of their derivatives does not break the planarity, it can be used in fluorescent light-emitting materials. The light-emitting layer of the device

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