Bipolar small molecular light-emitting material based on aromatic heterocyclo-2-S,S-dioxydibenzothiophene unit, and preparation method and application thereof

A technology of dioxydibenzothiophene and luminescent materials, applied in luminescent materials, electrical components, chemical instruments and methods, etc., to achieve the effects of balanced injection and transport, good electron and hole transport performance, and good solubility
CN106867520AActive Publication Date: 2017-06-20东莞阿尔达新材料科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
东莞阿尔达新材料科技有限公司
Publication Date
2017-06-20

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Abstract

The invention discloses a bipolar small molecular light-emitting material based on an aromatic heterocyclo-2-S,S-dioxydibenzothiophene unit, and a preparation method and application thereof. The preparation method comprises the following step: performing Suzuki coupling reaction on an aromatic heterocyclo-2-S,S-dioxydibenzothiophene monomer and a borate monomer containing an Ar structure to obtain the bipolar small molecular light-emitting material based on an aromatic heterocyclo-2-S,S-dioxydibenzothiophene unit. The bipolar small molecular light-emitting material disclosed by the invention has solubility, film forming property and film morphology stability, also has favorable electron and hole transmission performance, and can balance carrier injection and transmission to realize effective compounding of more excitons; a light-emitting layer based on the material can avoid the phenomenon of mixing with a hole / electron transmission layer interface, thereby improving the light-emitting efficiency of a device; and the light-emitting layer based on the material dose not need to be subjected to annealing treatment during preparation of the electroluminescent device, thereby ensuring that the preparation process is simple.
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Description

technical field

[0001] The invention belongs to the technical field of organic optoelectronics, and in particular relates to a bipolar small molecule luminescent material based on an aromatic heterocycle-2-S,S-dioxodibenzothiophene unit and its preparation method and application. Background technique

[0002] Organic light-emitting diodes (OLEDs) have attracted widespread attention due to their high efficiency, low-voltage drive, and ease of large-area fabrication. The research on OLED began in the 1950s. Until 1987, Dr. Qingyun Deng of Kodak Company of the United States developed an OLED device with a luminous brightness of 1000cdm driven by a 10V DC voltage using a sandwich device structure. -2 , so that OLED has achieved an epoch-making development.

[0003] The OLED device consists of a cathode, an anode, and an organic layer in the middle. The organic layer generally includes an electron transport layer, a light-emitting layer, and a hole transport layer. First, electr...

Claims

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