Blue light emitting organic luminescent material pyridine diimine cadmium complex and method of preparing the same

A pyridinediimide cadmium, luminescent material technology, applied in the directions of luminescent materials, cadmium organic compounds, chemical instruments and methods, etc., can solve the problem of low luminous intensity and the like

Inactive Publication Date: 2009-04-08
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 of low luminous intensity of the existing blue-light-emitting organic light-emitting material py

Method used

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  • Blue light emitting organic luminescent material pyridine diimine cadmium complex and method of preparing the same
  • Blue light emitting organic luminescent material pyridine diimine cadmium complex and method of preparing the same
  • Blue light emitting organic luminescent material pyridine diimine cadmium complex and method of preparing the same

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specific Embodiment approach 1

[0014] Specific implementation mode 1: The organic luminescent material pyridinediimide cadmium complex Cd(2,6-bis[1-(4-methylphenylimine)ethyl]pyridine)Cl that emits blue light in this embodiment 2 The molecular formula is C 23 h 23 N 3 CdCl 2 , whose structure is

[0015] Blue-emitting organic luminescent material pyridinediimide cadmium complex Cd(2,6-bis[1-(4-methylphenylimine)ethyl]pyridine)Cl 2 The steps of the preparation method are as follows: 1. Preparation of 2,6-bis[1-(4-methylphenylimine)ethyl]pyridine: Dissolve 1.0-1.5g of 2,6-diacetylpyridine in 20-35mL Add 2 to 3 mL of 4-methylaniline to absolute methanol, then add formic acid, stir for 20 to 50 minutes, reflux for 1 to 4 hours, cool to room temperature, filter out the precipitate, wash the precipitate with anhydrous methanol for 2 to 3 times, and use Recrystallize from anhydrous methanol 2 to 3 times to obtain 2,6-bis[1-(4-methylphenylimine)ethyl]pyridine; two, Cd(2,6-bis[1-(4-methyl phenylimine) ethyl]...

specific Embodiment approach 2

[0022] Embodiment 2: This embodiment is different from Embodiment 1 in that the organic solvent used for recrystallization in step 2 is dichloromethane. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0023] Embodiment 3: The difference between this embodiment and Embodiment 1 is that in step 1, the reflux is performed for 2 to 3 hours. Others are the same as in the first embodiment.

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Abstract

The invention relates to a pyridine diimine and cadmium complex of blue-light emitting organic materials and a preparation method thereof, and relates to the light-emitting organic material and the preparation method thereof. The pyridine diimine and cadmium complex solves the problem of lower intensity in light emitting of the existing blue light-emitting organic materials. The molecular formula of the pyridine diimine and cadmium complex is C23H23N3CdCl2, C29H35N3CdCl2 or C27H31N3CdCl2. The preparation method is as follows: 1. a ligand is first prepared; and 2. under the nitrogen protection, the ligand and anhydrous CdCl2 are dissolved in an organic solvent and then blended and refluxed, and finally recrystallized. The product prepared by the preparation method is a single crystal with good shape and the light emitting materials produced can emit blue fluorescence by the test and show better monochromaticity. Additionally, the preparation method is simple in operation and high in yield which can reach more than 83 percent.

Description

technical field [0001] The invention relates to an organic luminescent material and a preparation method thereof. Background technique [0002] Recently, due to the good properties and potential application prospects of nitrogen-containing ligands in sensor technology, photochemical and electroluminescent materials, etc., the luminescent complexes have attracted much attention. The research on the synthesis and performance of organic luminescent materials has been It is a hotspot in the field of light-emitting materials, and stable blue light compounds are very useful in organic electroluminescent devices (OLEDs for short), and are good in red, green, and blue three-primary color light-emitting materials of OLEDs. Organic materials have been obtained, but there are very few organic light-emitting materials that exhibit blue light, which has become a technical bottleneck for the development of OLEDs. Therefore, it is very challenging to design and synthesize efficient blue o...

Claims

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Application Information

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IPC IPC(8): C07F3/08C09K11/06
Inventor 范瑞清王平杨玉林
Owner HARBIN INST OF TECH
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