Dark blue light thermally activated delayed fluorescence material and application thereof

A technology of thermally activated delayed and fluorescent materials, applied in the fields of luminescent materials, organic chemistry, phosphorus-organic compounds, etc., can solve the problems of few TADF materials and lack of heavy metal Ir complexes, etc. High energy level, high efficiency effect

Active Publication Date: 2019-02-15
WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, TADF materials that meet the above conditions are still relatively scarce compared with heavy metal Ir complexes, especially in the field of deep blue light where phosphorescent heavy metal materials need to be broken through, there are very few TADF materials.

Method used

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  • Dark blue light thermally activated delayed fluorescence material and application thereof
  • Dark blue light thermally activated delayed fluorescence material and application thereof
  • Dark blue light thermally activated delayed fluorescence material and application thereof

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Embodiment Construction

[0053] A deep blue thermally activated delayed fluorescent material and technical solutions for its application in the present invention will be further described in detail with reference to the accompanying drawings and examples.

[0054] One embodiment of the present invention provides a deep blue photothermally activated delayed fluorescence material, the structural formula of which constitutes the compound is as follows:

[0055]

[0056] Further, compound 2 and compound 3 are derived from compound 1 through the matching of functional groups derived from different raw materials, the structural formulas of which are as follows:

[0057]

[0058] further, see Figure 1~6 As shown, it illustrates the distribution of the highest electron-occupied orbital (HOMO) and the lowest electron-unoccupied orbital (LUMO) of the three compounds involved in the present invention through theoretical calculation.

[0059] Further, the compound 1, compound 2 and compound 3, the lowest ...

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Abstract

The invention provides a dark blue light thermally activated delayed fluorescence (TADF) material. Compound molecules formed by the dark blue light thermally activated delayed fluorescence material have ultra-high reverse intersystem crossing rate, when the dark blue light thermally activated delayed fluorescence material which serves as a main body is doped into a luminous layer in an electroluminescent device, blue fluorescence and phosphorescence electroluminescent devices which take the dark blue light thermally activated delayed fluorescence material as a main body material have quite high efficiency.

Description

technical field [0001] The invention relates to the field of materials that can be used in flat-panel display devices, in particular, a deep blue light thermally activated delayed fluorescent material and a preparation method thereof. Background technique [0002] It is known that organic light-emitting diodes (organic light-emitting diodes, OLEDs) do not require a backlight source for their active light emission, high luminous efficiency, large viewing angle, fast response speed, wide temperature range, and relatively simple production and processing technology. The advantages of low driving voltage, low energy consumption, lighter and thinner, flexible display and huge application prospects have attracted the attention of many researchers. In OLEDs, however, the dominant luminescent guest material is crucial. [0003] The luminescent guest materials used in early OLEDs are fluorescent materials. Since the ratio of singlet and triplet excitons in OLEDs is 1:3, the theoreti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06C07F9/6568H01L51/50H01L51/54
CPCC09K11/06C07F9/65685H10K85/657H10K85/6572H10K50/11C07F9/65683C07F7/0816H10K85/40H10K2101/20C07F9/64C09K2211/1007C09K2211/1014C09K2211/1018
Inventor 罗佳佳
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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