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Polyfluorene compound and organic light-emitting device thereof

A technology of electroluminescent devices and compounds, applied in the field of difluorene compounds and their organic electroluminescent devices, which can solve problems such as poor thermal stability, short life of organic light-emitting devices, and reduced use of materials

Inactive Publication Date: 2018-09-14
CHANGCHUN HYPERIONS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the thermal stability of such materials is poor, resulting in a short lifetime of organic light-emitting devices using phosphorescent materials, thus reducing the use of such materials

Method used

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  • Polyfluorene compound and organic light-emitting device thereof
  • Polyfluorene compound and organic light-emitting device thereof
  • Polyfluorene compound and organic light-emitting device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] Preparation of compound 1

[0079]

[0080] Preparation of Intermediate A

[0081] Add 1-1 (31.81g, 100.00mmol) into 50.0mL of concentrated sulfuric acid, stir at room temperature for 2h, find that the color of the reaction solution turns yellow, slowly add 300.0mL of water, and then neutralize the reaction solution with sodium hydroxide to neutral, with solid Precipitated, cooled and filtered to obtain solid 1-2 (21.18g, 75.56mmol). 1-2 was dissolved in 150ml of ethylene glycol, 40ml of 30% hydrazine hydrate was added to reflux reaction, the reaction solution was cooled and poured into water, and the precipitate was filtered to obtain white solid 1-3 (14.29g, 56.12mmol). Dissolve 1-3 in 150mL toluene, add 30g 1-4, 1.5g tetrabutylammonium bromide, reflux, cool and filter column chromatography to obtain white powder (14.76g, 47.55mmol). Finally, it was brominated, and the white powder was dissolved in 100.0mL of chloroform, and 1.0g of anhydrous ferric chloride was ...

Embodiment 2

[0087] Preparation of compound 8

[0088]

[0089] Preparation of compound 8

[0090] Compound 8 was obtained by replacing 1-6 in Example 1 with 8-6 as shown above. Mass Spectrum m / z: 570.74 (calculated: 570.73). Theoretical element content (%)C 40 h 34 N 4 : C, 84.18; H, 6.00; N, 9.82 Measured element content (%): C, 84.17; H, 6.01; N, 9.83. It was confirmed above that the obtained product was the target product 8.

Embodiment 3

[0092] Preparation of compound 16

[0093]

[0094]Preparation of compound 16

[0095] Replace 1-4 in Example 1 with 16-4 as shown above, and replace 1-6 with 16-6 as shown above to obtain compound 16. Mass Spectrum m / z: 819.02 (calculated: 819.03). Theoretical element content (%)C 60 h 42 N 4 : C, 87.99; H, 5.17; N, 6.84 The measured element content (%): C, 87.98; H, 5.16; N, 6.85. It was confirmed above that the obtained product was the target product 16.

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Abstract

The invention provides a polyfluorene compound and an organic light-emitting device thereof, and belongs to the technical field of organic photoelectric materials. The compound has a structure shown as a formula (I). The polyfluorene compound disclosed by the invention has a larger conjugate plane structure, so that high electron fluidity can be provided; electron-deficient group indole and azaindole structures are introduced to better facilitate the acception of electrons and enable the polyfluorene compound to have good transmission performance; by introducing a bridging structure, on the one hand, the molecular weight of the compound can be enlarged, and the obtained material is enabled to have high glass transition temperature and prevent the crystallization effect; on the other hand,the compounds are enabled to have certain distortion in three-dimensional stereoscopic structure, and the film-forming property of the compound is improved. The organic light-emitting device, which isprepared by using the compound as a main body material in a luminescent layer, shows the advantages of low driving voltage and high luminous efficiency; the polyfluorene compound is an organic luminescent material with excellent performance.

Description

technical field [0001] The invention relates to the technical field of organic photoelectric materials, in particular to a parafluorene compound and an organic electroluminescence device thereof. Background technique [0002] With the progress of the information industry, traditional displays can no longer meet people's requirements, such as: cathode ray tube (CRT) displays have large volume and high driving voltage; liquid crystal displays (liquid crystal display, LCD) have low brightness and narrow viewing angles. , The operating temperature range is small; the plasma display panel (PDP) is expensive, the resolution is not high, and the power consumption is large. [0003] Organic light-emitting diodes (organic light-emitting diodes, OLEDs) as a new display technology has unparalleled advantages in various performances of existing display technologies, such as full solid state, self-luminous, high brightness, high resolution , wide viewing angle (above 170 degrees), fast ...

Claims

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Application Information

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IPC IPC(8): C07D209/08C07D519/00C07D401/14C07D209/10C09K11/06H01L51/50H01L51/54
CPCC09K11/06C07D209/08C07D209/10C07D401/14C07D519/00C09K2211/1011C09K2211/1007C09K2211/1029H10K85/624H10K85/623H10K85/626H10K85/615H10K85/654H10K85/657H10K85/6572H10K50/12
Inventor 张弘蔡辉
Owner CHANGCHUN HYPERIONS TECH CO LTD
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