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Methoxytriphenylamine-fluorene-containing copolymer, and preparation method and application thereof

A technology containing methoxytriphenylamine and methoxytriphenylamine is applied in the fields of methoxytriphenylamine-fluorene copolymer, preparation and application thereof, and can solve the problems of low optical and thermal stability, poor solubility, and blue light of materials. Insufficient saturation chromaticity and other problems, to achieve the effect of improving light and thermal stability, improving stability and high luminous efficiency

Inactive Publication Date: 2013-11-20
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of low light and thermal stability of the existing polyfluorene-based electroluminescent polymers, insufficient saturation chromaticity of the material emitting blue light, and poor solubility in organic solvents, and to provide a methoxy-containing three Aniline-fluorene copolymer, preparation method and application thereof

Method used

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  • Methoxytriphenylamine-fluorene-containing copolymer, and preparation method and application thereof
  • Methoxytriphenylamine-fluorene-containing copolymer, and preparation method and application thereof
  • Methoxytriphenylamine-fluorene-containing copolymer, and preparation method and application thereof

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specific Embodiment approach 1

[0028] Specific embodiment one: the number average molecular weight M of this embodiment containing methoxytriphenylamine-fluorene copolymer n =23000~56000, its structural formula is as follows:

[0029]

[0030] In this embodiment, the methoxy-containing triphenylamine-fluorene copolymer is poly[2,7-(9,9-dioctylfluorene)-alternating-N-phenyl-N-(4-methoxyphenyl)aniline ].

specific Embodiment approach 2

[0031] Specific embodiment two: the preparation method of the present embodiment containing methoxy triphenylamine-fluorene copolymer is realized according to the following steps:

[0032] 1. Add 4-methoxyaniline and 1-bromo-4-iodobenzene to the organic solvent a at a molar ratio of 1:(2~2.5), then add the palladium catalyst Pd 2 (dba) 3 , 1,1'-bis(diphenylphosphino)ferrocene (DPPF) and sodium tert-butoxide (t-BuONa), the reaction temperature is controlled at 90~105℃, the reaction is 5~10h, and then the organic Solvent a, the reaction product after rotary evaporation is separated by chromatographic column after extraction and distillation to obtain N,N-bis(4-bromophenyl)-4-(4-methoxy)aniline monomer (M );

[0033] 2. Mix 9,9-dioctylfluorene-2,7-diboronic acid cis(1,3-propanediol) ester and N,N-bis(4-bromophenyl) at a molar ratio of 1:(1~1.3) )-4-(4-methoxy)aniline monomer (M) is added in the organic solvent b, and then the palladium catalyst Pd(PPh 3 ) 4 and 2-3 mol / L sod...

specific Embodiment approach 3

[0038] Embodiment 3: This embodiment is different from Embodiment 2 in that the organic solvent a in step 1 is toluene, xylene, THF, dioxane, DMF or DMSO. Other steps and parameters are the same as in the second embodiment.

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Abstract

The invention provides a methoxytriphenylamine-fluorene-containing copolymer, and a preparation method and application thereof, relates to an organic electroluminescent material, a preparation method and application thereof, and aims to solve the problems that the existing polyfluorene electroluminescent polymer is low in light and heat stability, blue light emitted by the material is insufficient in saturation chroma and the solubility in organic solvent is poor. The methoxytriphenylamine-fluorene-containing copolymer provided by the invention is poly[2,7-(9,9-dioctylfluorene)-alternated-N-phenyl-N-(4-methoxyphenyl)aniline]. The preparation method comprises the following steps: 1, synthesizing a monomer from 4-methoxyaniline and 1-bromo-4-iodobenzene; and 2, synthesizing the methoxytriphenylamine-fluorene-containing copolymer from 9,9-dioctylfluorene-2,7-diboronic acid cis(1,3-propanediol)ester and the monomer. The polyfluorene luminescent material has favorable light and heat stability; the solubility in organic solvent can be up to 15-35%; and the material is applied to an electrogenerated blue light device, the emitted light approximates saturated deep blue.

Description

technical field [0001] The invention relates to an organic electroluminescence material, a preparation method and an application, and the organic electroluminescence material specifically relates to a methoxy-containing triphenylamine-fluorene copolymer. Background technique [0002] Among various organic electroluminescent materials, polyfluorene has high light and thermal stability. In solid state, the fluorescence quantum efficiency of fluorene is as high as 60% to 80%, and the band gap energy is greater than 2.90eV, so it has become a common Blu-ray material. Fluorene can obtain a series of derivatives by introducing different groups on the 9-, 2-, and 7-position carbons, so the structure of fluorene can be modified to a certain extent, so polyfluorene has also become an important light-emitting Material. However, the rigid planar biphenyl unit of polyfluorene makes it easy for the material to form an excimer when it emits light and emit long-wave, which seriously affe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G61/12C09K11/06H01L51/54
Inventor 王淑红孙治尧柏宇豪陈宇藏琳琳高洋虢德超鲁镝思
Owner HEILONGJIANG UNIV
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