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Composition of polydeuterated guest compound and host compound and optoelectronic device comprising composition

A compound and guest technology, applied in the field of organic electroluminescence, can solve the problems of difficult electron flow, short service life, low efficiency, etc., and achieve the effects of reduced lighting voltage, improved current efficiency, and efficient energy transmission

Active Publication Date: 2020-11-27
ZHEJIANG HUADISPLAY OPTOELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since its invention at the end of the 1980s, organic electroluminescent devices have been used in industries, such as display screens such as mobile phones, but the current OLED devices are restricted from wider application due to factors such as low efficiency and short service life, especially large screen display
However, due to the characteristics of CBP that holes are easy to transport and electrons are difficult to flow, the charge in the light-emitting layer is unbalanced, which reduces the efficiency of the device.

Method used

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  • Composition of polydeuterated guest compound and host compound and optoelectronic device comprising composition
  • Composition of polydeuterated guest compound and host compound and optoelectronic device comprising composition
  • Composition of polydeuterated guest compound and host compound and optoelectronic device comprising composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Synthesis of guest compound D-3

[0060]

[0061] The synthesis steps are similar to the general steps (1)-(3), wherein the yield of the (1) step is 85.7%, the yield of the (2) step is 93.5%, and the yield of the (3) step is 75.6% . The generated guest compound D-3 was confirmed by LC-MS. Mass spectrum m / z, theoretical value: 974.4; found value: M+H, 975.4.

Embodiment 2

[0063] Synthesis of guest compound D-4

[0064]

[0065] The synthesis steps are similar to the general steps (1)-(3), wherein the yield of the (1) step is 85.7%, the yield of the (2) step is 93.5%, and the yield of the (3) step is 73.3% . The generated guest compound D-4 was confirmed by LC-MS. Mass spectrum m / z, theoretical value: 991.4; found value: M+H, 992.4.

Embodiment 3

[0067] Synthesis of guest compound D-6

[0068]

[0069] The synthesis steps are similar to the general steps (1)-(3), wherein the yield of the (1) step is 85.7%, the yield of the (2) step is 93.5%, and the yield of the (3) step is 74.2% . The generated guest compound D-6 was confirmed by LC-MS. Mass spectrum m / z, theoretical value: 990.4; found value: M+H, 991.4.

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Abstract

The invention discloses a composition of a polydeuterated guest compound and a host compound and a photoelectric device containing the composition, belonging to the field of organic electroluminescence. Structural formulas of the guest compound and the host compound in the composition are shown as a structural formula I and a structural formula II (a, b or c) respectively, wherein substituent groups R1-R17 of the guest compound are partially or completely polydeuterated substituent groups. The composition has good thermal stability and can balance hole and electron transmission, and energy transmission between a subject and an object is more efficient; and when the composition serves as a light-emitting layer of an organic light-emitting device, the current efficiency of the light-emittingdevice is improved, and the driving voltage of the light-emitting device is reduced.

Description

technical field [0001] The invention belongs to the field of organic electroluminescence, and in particular relates to a combination of a multi-deuterated guest compound and a host compound and an electroluminescent device comprising the composition. Background technique [0002] As a new type of display technology, OLED devices have self-illumination, wide viewing angle, low energy consumption, high efficiency, thinness, rich colors, fast response speed, wide applicable temperature range, low driving voltage, and flexible, bendable and transparent displays. The unique advantages of panels and environmental friendliness can be applied to flat panel displays and new generation lighting, and can also be used as LCD backlight. [0003] Since its invention in the late 1980s, organic electroluminescent devices have been used in industries, such as display screens such as mobile phones, but the current OLED devices are restricted from wider application due to factors such as low e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06C09K11/02H01L51/50H01L51/54
CPCC09K11/025C09K11/06C09K2211/185C09K2211/1029C09K2211/1033C09K2211/1007H10K85/615H10K85/622H10K85/626H10K85/654H10K85/657H10K85/6572H10K85/6574H10K85/342H10K85/40H10K50/12H10K50/11
Inventor 王子兴吕良飞吴空物汪华月王世超华万鸣赵晓宇
Owner ZHEJIANG HUADISPLAY OPTOELECTRONICS CO LTD
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