Rotaviral tetraene fluorescent compound, preparation method and application thereof, and electroluminescent device

Abstract

The invention discloses a rotaviral tetraene fluorescent compound, a preparation method and application thereof, and an electroluminescent device. The structural general formula of the rotaviral tetraene fluorescent compound is as follows, wherein Ar1 is phenyl, 1-naphthyl or 2-naphthyl, and Ar2 is phenyl, 1-naphthyl or 2-naphthyl. A special rotaviral tetraene conjugate rigid structure containing heteroatoms is utilized and connected with a blue luminophore with high quantum efficiency, so as to obtain the rotaviral tetraene fluorescent compound. Thus, a more distorted molecular structure is achieved; pi-pi accumulation between molecules is reduced; meanwhile, the conductivity of the fluorescent compound is improved. By adopting the rotaviral tetraene fluorescent compound, stabilization of an apparatus is facilitated; excellent electroluminescent properties are obtained; development of an efficient full-color display is facilitated; the rotaviral tetraene fluorescent compound can be widely applied to OLED (organic light-emitting diode) large-screen display and OLED white-light illumination with high brightness demands.

Description

technical field [0001] The invention relates to the field of organic luminescent materials, in particular to a romantetraene fluorescent compound, a preparation method and application, and an electroluminescence 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 (the structural formula is ), naphthalene (structural formula is ), phenanthrene (the structural formula is ) and pyrene (the structural formula is ) and so on have a relatively large energy band width, which can well meet the requirements of blue fluorescent light-emitting materials. [0003] From the structural formulas of anthracene, naphthalene, phenanthrene, and pyrene, it can be found that they are all composed of C and H elements, ...

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Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a kind of romantetraene fluorescent compound, its preparation method and application and electroluminescence device, the described romantetraene fluorescent compound is a kind of compound with high quantum efficiency , high conductivity and high thermal stability blue fluorescent light-emitting materials, and such compounds can be used as blue light fluorescent light-emitting materials to prepare high-efficiency electroluminescent light-emitting devices, aiming to solve the poor conductivity of the existing blue light fluorescent materials in the light-emitting layer And it is easy to form π-π stacking, which further causes the problems of high driving voltage and insufficient red shift of electroluminescence spectrum

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