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Beta-diketone ligand and its europium coordination compound and europium coordinationi compound electroluminescence device

A technology of ligands and diketones is applied in the field of rare earth element europium complex luminescent materials, which can solve the problems of wide emission spectrum range and difficult to meet the requirements of color purity, and achieve the effect of improving brightness and efficiency and excellent electroluminescence performance.

Inactive Publication Date: 2004-02-25
PEKING UNIV
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Problems solved by technology

These materials generally have a wide range of emission spectra, which is difficult to meet the requirements for color purity of actual displays.

Method used

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  • Beta-diketone ligand and its europium coordination compound and europium coordinationi compound electroluminescence device
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  • Beta-diketone ligand and its europium coordination compound and europium coordinationi compound electroluminescence device

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Embodiment approach

[0031] The product and method of the present invention will be further described below through specific examples, but these specific embodiments do not limit the protection scope of the present invention in any way.

[0032] The raw materials used in this embodiment are known compounds, which can be purchased in the market, or can be synthesized by methods known in the art.

[0033] 1: Synthesis of Ligand 4-(carbazolyl-9)dibenzoylmethane (c-HDBM)

[0034] a. Synthesis of p-carbazolylbenzonitrile: Equimolar carbazole (16.7g, 0.100mol) and p-fluorobenzonitrile (12.1g, 0.100mol) were dissolved in 100mL dimethyl sulfoxide, in anhydrous K 2 CO 3 (41.4g, 0.300mol) was reacted at 140°C for 12h under catalysis, and then the mixture was poured into 1L of water to obtain a gray solid. The crude product was separated and purified by silica gel column using dichloromethane:petroleum ether (1:3) as eluent to obtain a white solid with a yield of 60%. 1 H NMR (in CD 3 Cl), 8.15~8.13(d, 2...

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Abstract

The present invention relates to a beta-diketone ligand and its europium coordination compound and europium coordination compound electroluminescent device. The ligand is the transmission group with carrier, for example, beta-diketone ligand of carbazyl or oxazolyl, and the chemical formula of europium coordination compound is Eu(DBM)n(R-DBM)3-nBath, n=1.2, Bath=4,7-diphenyl-1,10-o-phenan-throline. The electroluminescent device includes conductive glass substrate layer, hole transmission layer, luminous layer and cathode layer, and the luminous material of luminous layer adopts the above-mentioned europium coordination compound.

Description

Technical field: [0001] The invention relates to the field of organic electroluminescent materials, in particular to a rare earth element europium complex luminescent material. technical background: [0002] At present, most of the color displays used by people are cathode ray tubes or liquid crystal displays. The former is large in size, slow in response, and low in efficiency. Compared with the former, the latter is smaller in size and can realize flat panel display. , slow response, complex process, still can not meet people's needs. [0003] In 1987, C.W.Tang and VanSlyke (Appl. Phys. Lett. 1987, 51, 913) of Eastman Kodak Company in the United States made a groundbreaking research on organic electroluminescence. They made an organic electroluminescent device (OLED) by sandwiching a bilayer organic film between two electrodes. Since then, organic electroluminescence has become a research hotspot in the field of luminescence. The great attraction of organic electrolumin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06
Inventor 黄春辉卞祖强关敏李富友辛颢
Owner PEKING UNIV
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