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CuIN2P cuprous complex light-emitting material based on benzoxazolyl pyridine

A luminescent material and benzoxazole technology, applied in the field of organic electroluminescent materials and luminescent materials, can solve the problem that the luminous intensity cannot meet the application requirements, achieve good phosphorescence emission performance, suppress non-radiative attenuation, and thermal stability Good results

Inactive Publication Date: 2016-08-24
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It's just that the luminous intensity of Cu(I) complex phosphorescent materials in the OLED working temperature range is still not up to the application requirements.

Method used

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  • CuIN2P cuprous complex light-emitting material based on benzoxazolyl pyridine
  • CuIN2P cuprous complex light-emitting material based on benzoxazolyl pyridine
  • CuIN2P cuprous complex light-emitting material based on benzoxazolyl pyridine

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Experimental program
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Effect test

Embodiment 1

[0032] Preparation of a large number of microcrystalline samples: Weigh 0.5 mmol of CuI and dissolve it in 10 mL of acetonitrile, weigh 0.5 mmol of triphenylphosphine ligand and dissolve it in 8 mL of dichloromethane, mix the two solutions, and stir to make Coordination reaction fully occurs to obtain colorless solution A; then weigh 0.5mmol of 2-PBO ligand and dissolve it in 8mL of acetonitrile, then add this solution into the above solution A, and stir to make the coordination reaction fully occur, and finally The obtained orange-yellow reaction liquid was rotary evaporated to remove all solvents, and dried in vacuo to obtain orange-yellow crystalline powder as the product with a yield of 92% (calculated as Cu).

Embodiment 2

[0034] Synthesis of phosphorescent cuprous complex CuI(2-PBO)(PPh 3 ) single crystal: Weigh 0.1 mmol of CuI and dissolve it in 3 mL of acetonitrile, weigh 0.1 mmol of triphenylphosphine ligand and dissolve it in 3 mL of dichloromethane, mix these two solutions, and stir to make it fully complexed Then, weighed 0.1mmol of 2-PBO ligand and dissolved it in 2mL of acetonitrile, then added this solution into the above-mentioned solution A, and stirred to make the coordination reaction fully occur, and finally the obtained orange-yellow The solution was filtered, and the filtrate was covered with n-hexane to promote the crystallization of the product. After standing for several days, a large number of orange-yellow block crystals were precipitated. An orange-yellow block transparent crystal with a size of 0.30mm×0.26mm×0.23mm was selected for X-ray single crystal diffraction structure test. The molecular structure of the compound is shown in the attached figure 1 , and its unit ce...

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Abstract

The invention discloses an orange phosphorescent CuIN2P cuprous complex light-emitting material based on benzoxazolyl pyridine and a preparation method thereof. A phosphorescent complex is prepared by means of a complexing reaction on cuprous iodide and ligand; the molecular structural formula of the phosphorescent complex is shown as CuI(2-PBO)(PPh3); in the formula, 2-PBO and PPh3 are electrically-neutral ligand 2(2-benzoxazole)pyridine and triphenylphosphine respectively. The complex has the advantages of easiness in purification of small molecules, high light-emitting efficiency, and easiness in dissolving by an organic solvent. The CuIN2P cuprous complex light-emitting material is prepared by means of a direct mixing reaction between the copper iodide and a solution of the ligand, and has the advantages of simple and convenient process, simple equipment, adoption of readily-available raw materials, low cost and the like. The CuIN2P cuprous complex light-emitting material can be taken as a photo-luminescent light-emitting orange luminescent material, and can be taken as a light-emitting layer phosphorescent material in an electroluminescent device consisting of multiple layers of organic materials.

Description

technical field [0001] The invention relates to the technical field of luminescent materials, to the fields of photoluminescent materials and electroluminescent materials, in particular to the field of organic electroluminescent materials. Background technique [0002] Luminescent materials include photoluminescence and electroluminescence in two categories of applications. Photoluminescence refers to the phenomenon in which an object is irradiated by an external light source, thereby obtaining energy to generate excitation and finally lead to luminescence. Photoluminescence can be caused by ultraviolet radiation, visible light and infrared radiation. Photoluminescent materials can be used in fluorescence analysis, traffic signs, tracking monitoring, agricultural light conversion film, scintillator in nuclear detection technology, fluorescent light collector in solar energy conversion technology, etc. Electroluminescence (EL for short) refers to the phenomenon that lumines...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F9/6558C09K11/06H01L51/54
CPCC09K11/06C07F9/65586C09K2211/188H10K85/371
Inventor 柴文祥陈岗宋莉朱秋梦郭冰陈智秦来顺唐高
Owner CHINA JILIANG UNIV
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