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Organic light-emitting material 2-(benzimidazolyl)-6-methoxyl-pyridine zinc complex and preparation method thereof

A technology of benzimidazole-based and luminescent materials, which is applied in luminescent materials, zinc organic compounds, chemical instruments and methods, etc., can solve the problems of short fluorescence lifetime and scarce types of organic light-emitting materials, achieve long fluorescence lifetime, and the method is simple and easy The effect of high operation and productivity

Inactive Publication Date: 2012-07-25
HARBIN INST OF TECH
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  • 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 existing organic light-emitting materials that emit blue light are rare and have a short fluorescence lifetime, and provide an organic light-emitting material 2-(benzoimidazolyl)-6-methoxyl-pyridine zinc complex substances and their preparation methods

Method used

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  • Organic light-emitting material 2-(benzimidazolyl)-6-methoxyl-pyridine zinc complex and preparation method thereof
  • Organic light-emitting material 2-(benzimidazolyl)-6-methoxyl-pyridine zinc complex and preparation method thereof
  • Organic light-emitting material 2-(benzimidazolyl)-6-methoxyl-pyridine zinc complex and preparation method thereof

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specific Embodiment approach 1

[0021] Specific embodiment 1: The molecular formula of an organic luminescent material 2-(benzimidazolyl)-6-methoxy-pyridine zinc complex in this embodiment is C 13 h 11 N 3 OZnCl 2 , where the structural formula is

[0022]

[0023] The organic luminescent material 2-(benzimidazolyl)-6-methoxy-pyridine zinc complex prepared in this embodiment is a single crystal with intact crystal form; Dichloromethane solution and room temperature conditions show blue fluorescence, and the presented monochromatic performance is relatively good. The formation of the complex increases the conjugation of the system, the maximum emission wavelength is red-shifted to 470nm, and the half-maximum width is 40nm, showing extremely high-purity blue light, the fluorescence lifetime is 6.6μs, and the stability is strong, which can be used in the air Leave it for a long time.

[0024] In this embodiment, the cheap and easy-to-obtain zinc chloride and the designed and synthesized benzimidazole de...

specific Embodiment approach 2

[0025] Specific embodiment two: the preparation method of an organic luminescent material 2-(benzimidazolyl)-6-methoxyl-pyridine zinc complex in this embodiment is carried out according to the following steps:

[0026] 1. Preparation of ligand 2-(benzoimidazolyl)-6-methoxy-pyridine: Dissolve 0.05-1mg of o-phenylenediamine in 1-20mL of methanol solvent and stir at 200r / min Evenly, a mixed solution is obtained; add 0.1-2.4mL of 6-methoxy-pyridine-2 aldehyde and 0.5-1mL of formic acid dropwise to the above-mentioned mixed solution at a rate of 30 drops / min to 60 drops / min, drop After the addition, reflux for 10-15 hours, then remove the methanol solvent with cold hydrazine, and then stand at room temperature for 7-10 days to obtain the ligand 2-(benzimidazolyl)-6-methoxy-pyridine;

[0027] 2. The ligand 2-(benzimidazolyl)-6-methoxy-pyridine obtained in step 2 and the metal salt are dissolved in a 1:1 ratio of 1:1 in a mixed solvent at 65 ℃ ~ 70 ℃ temperature, under the condition...

specific Embodiment approach 3

[0032] Specific embodiment three: the difference between this embodiment and specific embodiment two is: the metal salt used in step two is anhydrous ZnCl 2 , CdCl 2 or HgCl 2 . Other steps and parameters are the same as in the second embodiment.

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Abstract

The invention relates to an organic light-emitting material 2-(benzimidazolyl)-6-methoxyl-pyridine zinc complex and a preparation method of the organic light-emitting material 2-(benzimidazolyl)-6-methoxyl-pyridine zinc complex, in particular relating to an organic light-emitting material and a preparation method of the organic light-emitting material. As the organic light-emitting material 2-(benzimidazolyl)-6-methoxyl-pyridine zinc complex and the preparation method are adopted, the problems of few types and short fluorescence lifetime of the existing organic light-emitting material emitting blue light. A molecular formula of a product is C13H11N3OZnCl2. the preparation method comprises the following steps of: preparing a ligand of 2-(benzimidazolyl)-6-methoxyl-pyridine; dissolving the ligand and anhydrous ZnCl2 to organic solvent for stirring under the protection of nitrogen; and volatilizing at the room temperature. The product prepared by the preparation method is a single crystal having intact crystal form. The prepared organic light-emitting material presents blue-fluorescence after test, the present monochrome has better performance, and the fluorescent lifetime is 6.6 mus. The preparation method is simple and easy to operate, and the yield is high and can reach more than 80%. The organic light-emitting material 2-(benzimidazolyl)-6-methoxyl-pyridine zinc complex and the preparation method are applied to the organic light-emitting material and the preparation method of the organic light-emitting material.

Description

technical field [0001] The invention relates to an organic luminescent material and a preparation method thereof. Background technique [0002] At present, the design and synthesis of light-emitting organic complexes in the full spectral range have been receiving great attention in the field of materials. Realization of three key primary colors (blue, green, red) by discovering simple small molecular systems is an attractive challenge for synthetic workers. Through the 4f-4f transition of rare earth ions europium(III) and terbium(III), a large number of red and green light materials have been well utilized in organic electroluminescent devices (referred to as OLED). Compared with the popularity of the above-mentioned materials, blue light materials with emission wavelengths between 455nm and 492nm are rarely reported. Recently, Wang Suning et al. studied the application of a series of heterocyclic metal complexes containing nitrogen atoms in blue OLEDs, and proved that thi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F3/06C09K11/06
Inventor 范瑞清杨玉林贺绍飞陈硕秦浩牛艳宁
Owner HARBIN INST OF TECH
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