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Multifunctional modified phenylate diphosphine oxygen compound and preparation method and application thereof

A technology of diphenylphosphine oxide compound, which is applied in the multifunctional modification of phenyl ether-based bisphosphine oxide compound and the field of preparation and application thereof, can solve the problem of high injection/transmission capability and high starting voltage, and achieve good carrier injection /Transmission capacity, improve overall performance, reduce the effect of starting voltage

Inactive Publication Date: 2013-01-30
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the compound prepared by the existing preparation method cannot maintain a high triplet energy level and good carrier injection / transport ability due to triplet-triplet annihilation and concentration quenching effects. The host material is applied to the problem of high start-up voltage of electroluminescent devices, and a multifunctional modified phenylene ether-based bisphosphine oxide compound and its preparation method and application are provided.

Method used

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  • Multifunctional modified phenylate diphosphine oxygen compound and preparation method and application thereof
  • Multifunctional modified phenylate diphosphine oxygen compound and preparation method and application thereof
  • Multifunctional modified phenylate diphosphine oxygen compound and preparation method and application thereof

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specific Embodiment approach 1

[0020] Specific Embodiment 1: This embodiment provides a multifunctional modified phenylene ether-based bisphosphine oxide compound, which is a derivative of a compound with the chemical name 4,6-bis(diphenylphosphinyloxy)phenyl ether. The structural formula of the modified phenyl ether group bisphosphine oxide is:

[0021]

[0022] Wherein, X described in the structural formula, Y structure is as follows:

[0023] (1) X is Y is hydrogen or (2) X is Y is hydrogen or (3) X is Y is hydrogen or (4) X is Y is hydrogen or

[0024] The structural formula of the 4,6-bis(diphenylphosphinoxy)phenyl ether compound described in this embodiment is:

[0025]

[0026] The multifunctional modified phenylene ether-based bisphosphine oxide compound provided by this embodiment can not only maintain a high triplet state energy level, ensure sufficient energy transfer from the host to the guest, but also have good carrier injection / transport capabilities, thereby The goal ...

specific Embodiment approach 2

[0027] Specific embodiment two: The preparation method of the multifunctional modified phenylene ether-based bisphosphine oxide compound provided in this embodiment is specifically completed according to the following steps:

[0028] The preparation method of the multifunctional modified phenylene ether group bisphosphine oxide compound is completed according to the following steps:

[0029] 1. Weigh 4,6-bis(diphenylphosphinooxy)phenyl ether and dissolve it in concentrated sulfuric acid, add N-bromosuccinimide, stir and react at room temperature for 2h~6h, after the reaction, use CH 2 Cl 2 and H 2 O was extracted, the organic phase was dried with anhydrous sodium sulfate, the organic phase solvent was spin-dried, and recrystallized with ethanol to obtain 2-bromo-4,6-bis(diphenylphosphineoxy)phenyl ether or 2,8 -Dibromo-4,6-bis(diphenylphosphinoxy)phenyl ether, wherein the ratio of the volume of concentrated sulfuric acid to the amount of 4,6-bis(diphenylphosphinoxy)phenyl e...

specific Embodiment approach 3

[0042] Specific embodiment three: the difference between this embodiment and specific embodiment two is: the N-bromosuccinimide described in step one and 4,6-bis(diphenylphosphinooxy)phenyl ether The molar ratio is 1:1 or 2:1. Others are the same as in the second embodiment.

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Abstract

The invention discloses a multifunctional modified phenylate diphosphine oxygen compound and a preparation method and application thereof, and relates to a multifunctional compound and a preparation method and application thereof. By the multifunctional modified phenylate diphosphine oxygen compound, the problem of high starting voltage of devices caused by incapability of keeping high triplet-state energy level and high injection / transmission capacity of carriers simultaneously is solved. The multifunctional modified phenylate diphosphine oxygen compound is a derivative of a compound of which the chemical name is 4,6-bis(diphenyl phosphinyloxy) phenylate; and a structural formula is shown as the specification. The preparation method comprises the following steps of: 1, preparing a 4,6-bis(diphenyl phosphinyloxy) phenylate bromo product; and 2, preparing the multifunctional modified phenylate diphosphine oxygen compound. The multifunctional modified phenylate diphosphine oxygen compound is applied to the production of organic electroluminescent devices, and is used for high-efficiency portable display terminals and lighting equipment.

Description

technical field [0001] The present invention relates to a functional compound and its preparation method and application. Background technique [0002] Since Forrest and Thompson reported electrophosphorescence, phosphorescent organic light-emitting diodes (PHOLEDs) have received extensive attention due to their ideal properties as energy-efficient flat-panel displays and new-generation solid-state light sources, including their theoretical internal quantum efficiency of 100% . In order to suppress triplet-triplet annihilation and concentration quenching effects, most phosphorescent dyes of heavy metal complexes are doped in host materials to improve device performance. However, stable and efficient PHOLEDs are still a major challenge. In host-guest doped electrophosphorescent devices, in order to ensure effective energy transfer to the guest material, the host material is often required to have a higher first triplet energy level T 1 (about 3.0eV). Hosts with high tripl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F9/53C07F9/572C07F9/6558C09K11/06H01L51/54H01L51/56
Inventor 许辉韩春苗
Owner HEILONGJIANG UNIV
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