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Tetrabenzene methane derivative and its application

A technology of tetraphenylmethane and derivatives, used in triarylmethane dyes, methine/polymethine dyes, electrical components, etc., can solve the problems of short life and low efficiency, and achieve improved life, high brightness, and improved efficiency. Effect

Active Publication Date: 2008-01-02
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] The purpose of the present invention is to propose a class of tetraphenylmethane derivatives with high energy and high stability, which can be used as the host material of triplet luminescent dyes in the light-emitting layer of organic electroluminescent devices, and overcome the problem of devices under high current. The disadvantages of low efficiency and short life

Method used

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  • Tetrabenzene methane derivative and its application
  • Tetrabenzene methane derivative and its application
  • Tetrabenzene methane derivative and its application

Examples

Experimental program
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Effect test

Embodiment 1

[0047] Embodiment 1: the synthesis of compound (1)

[0048] Add 0.1mol copper powder, 0.015mol 18-crown-6, 0.2mol potassium carbonate in the flask, and pass through nitrogen gas, add o-dichlorobenzene, 0.1mol 4-iodotetraphenylmethane and 0.11 mol carbazole. Heating to 180°C-200°C, reacting for 16-48 hours. After the reaction was completed, it was filtered while hot, and the yield was 62%. Mass spectrum: m / e, 485; elemental analysis: experimentally determined C: 91.49%, H: 5.66%, N: 2.75%; theoretical values: C: 91.51%, H: 5.60%, N: 2.88%.

Embodiment 2

[0049] Embodiment 2: the synthesis of compound (3)

[0050] Synthesized according to the method of compound (1), replacing carbazole with 3,6-di-tert-butylcarbazole, and the yield is 59%. Mass spectrum: m / e, 597; elemental analysis: experimentally determined C: 90.35%, H: 7.33%, N: 2.32%; theoretical values: C: 90.41%, H: 7.25%, N: 2.34%.

Embodiment 3

[0051] Embodiment 3: the synthesis of compound (4)

[0052] Synthesized according to the method of compound (1), the feeding amount of carbazole is 0.21mol, and 4,4'-diiodotetraphenylmethane is used instead of 4-iodotetraphenylmethane, and the yield is 66%. Mass spectrum: m / e, 650; elemental analysis: experimentally determined C: 90.40%, H: 5.31%, N: 4.25%; theoretical values: C: 90.43%, H: 5.27%, N: 4.30%.

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Abstract

The invention relates to a tetraphenylmethane derivative, the structure formulation is R1-R4 hydrogen atom, 1-30 carbon atom number alkyl and vinyl, 6-50 carbon atom number substituted or unsubstituted aryl, associated aryl, condensed-nuclei aryl, 4-50 carbon atom number substituted or unsubstituted heterocyclic radical aryl with N, benzo heterocyclic radical aryl, 1-50 carbon atom number alkyl, vinyl, aryl or group which comprises heterocyclic radical aryl, wherein n1-n4 is 1-3 integer. The invention can be used for the luminescent layer of the organic electroluminescent device as the main body material of the triplet state luminescent dye, which is provided with high energy and high stability, can stop the energy reverse delivery process between the dye molecule and the main body material molecule, improves the lightness and efficient of the organic electroluminescent device, and improves the life of the organic electroluminescent device.

Description

Technical field: [0001] The present invention relates to a kind of compound with tetraphenylmethane structure as the central linking group, and the application of this compound. Background technique: [0002] With the development of multimedia technology and the advent of the information society, the performance requirements of flat panel displays are getting higher and higher. Three new display technologies emerging in recent years: plasma display, field emission display and organic electroluminescent display (OLED), all make up for the shortcomings of cathode ray tube and liquid crystal display to a certain extent. Among them, OLED has a series of advantages such as self-illumination, low-voltage DC drive, full curing, wide viewing angle, and rich colors. Compared with liquid crystal displays, OLED does not require a backlight, has a large viewing angle, low power consumption, and its response speed is faster than that of liquid crystal displays. It is 1000 times that of ...

Claims

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Application Information

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IPC IPC(8): C07D209/86C07C15/16H01L51/54
CPCC09B11/04C09B23/148
Inventor 乔娟邱勇李伟
Owner TSINGHUA UNIV
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