Cu3I2 cationic cuprous cluster compound green phosphor material

A green phosphorescent, cationic technology, applied in the field of organic electroluminescent materials and luminescent materials, can solve the problems of high cost, the luminous intensity cannot meet the application requirements, affecting the popularization and application of OLED and market performance, etc. Structural Distortion Dependent Nonradiative Attenuation Process, Effect of Good Phosphorescence Emission Properties

Inactive Publication Date: 2015-09-16
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] To analyze more specifically, the green phosphorescent materials currently on sale for OLED are complexes of noble metals such as iridium and platinum. Although they have performed well in terms of performance, their expensive prices also affect the quality of OLED final products. Promote application and market performance
The use of Cu(I) complexes as green phosphorescent materials has a long history (N.Armaroli, G.Accorsi, F.Cardinali, A.Listorti, Top.Curr.Chem.2007, 280, 69-115.), this A cheap Cu(I) complex luminescent material can be easily prepared from Cu(I) ions and suitable organic ligands, but its luminous intensity cannot meet the application requirements in the OLED operating temperature range.

Method used

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  • Cu3I2 cationic cuprous cluster compound green phosphor material
  • Cu3I2 cationic cuprous cluster compound green phosphor material
  • Cu3I2 cationic cuprous cluster compound green phosphor material

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A large number of phosphorescent cluster materials [(Cu 3 I 2 )(DPPY) 3 ]PF 6 Microcrystalline sample preparation: Weigh 0.4mmol (76mg) CuI and dissolve it in 20mL acetonitrile solution to obtain a clear solution A; then weigh 0.6mmol (158mg) diphenyl-2-pyridylphosphine (DPPY) and dissolve it in 10mL di In methyl chloride, a colorless clear solution B was obtained, and solution B was added dropwise to solution A, and after stirring and reacting completely, it became yellow clear solution C; then weighed 0.2 mmol (75 mg) [Cu(CH 3 EN) 4 ]PF 6 Dissolve in 10mL of dichloromethane to obtain a colorless transparent solution D; then slowly add D to the above mixed solution C, stir at room temperature to make it fully react, and finally filter the obtained yellow solution, and rotary evaporate to remove all The solvent was vacuum-dried to obtain a yellow crystal powder as the product, and the yield was 95% (calculated as Cu).

Embodiment 2

[0032] Synthesis of phosphorescent cluster materials [(Cu 3 I 2 )(DPPY) 3 ]PF 6 single crystal: Weigh 50 mg of the yellow crystal product powder obtained in Example 1, re-dissolve it completely with 10 mL of dichloromethane and filter, cover the filtrate with isopropanol to promote product crystallization, and precipitate a large number of yellow flaky crystals after standing for several days. A yellow crystal with a size of 0.48mm×0.23mm×0.17mm was selected for X-ray single crystal structure test. The molecular structure of the compound is shown in the attached figure 1 , and its unit cell packing structure is shown in the attached figure 2 .

[0033] For phosphorescent cluster materials [(Cu 3 I 2 )(DPPY) 3 ]PF 6 A series of performance tests were carried out on pure phase crystal samples. The material crystal of the present invention has been tested for steady state fluorescence, and the results show that the material can emit strong green light under the action ...

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Abstract

The invention discloses a pyridyl phosphine ligand based cationic trinuclear cuprous iodide cluster compound green phosphor material and a preparation method thereof. The phosphor cluster compound is prepared by complexing a cuprous salt and a ligand and has a molecular structure of [(Cu3I2)(DPPY)3]PF6, wherein DPPY in the structure formula is diphenyl-2-pyridyl phosphine which is an electrically neutral phosphine ligand. The cluster compound has such advantages of a micromolecular compound as easiness in purification and high luminous efficiency and further has a high heat stability. The material is prepared by enabling an acetonitrile solution of CuI to be subjected to mixing reaction with a dichloromethane solution of DPPY and a dichloromethane solution of Cu(CH3CN)4PF6 step by step; the preparation method is simple and convenient in process and simple in equipment, adopts easily available raw materials and is low in cost. The material can be used as a photoluminescent green-light material and can also be used as a luminescent-layer phosphor material in an electroluminescent device comprising 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): C09K11/06C07F9/50H01L51/54
Inventor 柴文祥宋莉洪明卫邓德刚赵士龙陶晓栋魏钦华陈海潮
Owner CHINA JILIANG UNIV
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