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Electroluminescent phosphorescence material and its application

A phosphorescent material and luminescent technology, applied in the field of phosphorescent materials, can solve problems such as poor compatibility

Inactive Publication Date: 2006-02-01
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

After the study, the research team of Academician Cao Yong of South China University of Technology believes that the poor compatibility between the above-mentioned materials and polymers is the main reason.

Method used

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  • Electroluminescent phosphorescence material and its application
  • Electroluminescent phosphorescence material and its application
  • Electroluminescent phosphorescence material and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Example 1 Compound 1 (TFPBO) 2 IrBPBPIr(TFPBO) 2 Synthesis

[0058] 1) (TFPBO) 2 Ir(μ-Cl) 2 Ir(TFPBO) 2 Synthesis

[0059] Weigh 0.3553 g of IrCl 3 ·nH 2 O (1mmol), 0.5345 grams of 2-(2', 3', 4', 5'-tetrafluoro)-phenyl-benzoxazole (TFPBO, 2mmol), were added to 30 milliliters of ethylene glycol monoethyl ether and 10 Milliliters of water mixed solution, heated to reflux for 24 hours under the protection of nitrogen, then cooled to room temperature, there was precipitation. The precipitate was filtered off, dichloromethane was used as eluent, silica gel column chromatography was used, and the solvent was evaporated to obtain 0.892 g of yellow solid powder with a yield of 90%. The structure was confirmed by nuclear magnetic resonance, mass spectrometry and elemental analysis. 1 H-NMR (200MHz, d-acetone,): δ, ppm, 6.84(t, 4H, J7.1Hz), 7.01(t, 4H, J7.0Hz), 7.14(d, 4H, J8.0Hz), 8.18 (d, 4H, J8.3Hz); time-of-flight mass spectrometry (TOF): m / e, 1519; elemental analysi...

Embodiment 2

[0062] Example 2 Compound 2 (TFPBO) 2 IrBPBPIr(TFPBO) 2 Synthesis

[0063] 1) (TFPBO) 2 Ir(μ-Cl) 2 Ir(TFPBO) 2 Synthesis

[0064] Weigh 0.3553 g of IrCl 3 nH 2 O (1mmol), 0.5345 g 2-(2',3',4',5'-tetrafluoro)-phenyl-benzimidazole (TFPBI, 2mmol), was added to 30 ml ethylene glycol monoethyl ether and 10 ml In the mixed solution of water, it was heated to reflux for 24 hours under the protection of nitrogen, and then cooled to room temperature, and a precipitate was deposited. The precipitate was filtered off, dichloromethane was used as eluent, silica gel column chromatography was used, and the solvent was evaporated to obtain 0.892 g of yellow solid powder with a yield of 90%. The structure was confirmed by nuclear magnetic resonance, mass spectrometry and elemental analysis. 1 H-NMR (200MHz, d-acetone,): δ, ppm, 6.84(t, 4H, J7.1Hz), 7.01(t, 4H, J7.0Hz), 7.14(d, 4H, J8.0Hz), 8.18 (d, 4H, J8.3Hz); time-of-flight mass spectrometry (TOF): m / e, 1519; elemental analysis: ex...

Embodiment 3

[0067] Example 3 Compound 3 (TFPBI) 2 IrBPBPIr (TFPBI) 2 Synthesis

[0068] 1) (TFPBI) 2 Ir(μ-Cl) 2 Ir(TFPBI) 2 Synthesis

[0069] Weigh 0.3553 g of IrCl 3 nH 2 O (1mmol), 0.5345 grams of 2-(2', 3', 4', 5'-tetrafluoro)-phenyl-benzoxazole (TFPBO, 2mmol), were added to 30 milliliters of ethylene glycol monoethyl ether and 10 Milliliters of water mixed solution, heated to reflux for 24 hours under the protection of nitrogen, then cooled to room temperature, there was precipitation. The precipitate was filtered off, dichloromethane was used as eluent, silica gel column chromatography was used, and the solvent was evaporated to obtain 0.892 g of yellow solid powder with a yield of 90%. The structure was confirmed by nuclear magnetic resonance, mass spectrometry and elemental analysis. 1 H-NMR (200MHz, d-acetone,): δ, ppm, 6.81(t, 4H, J7.1Hz), 7.01(t, 4H, J7.0Hz), 7.14(d, 4H, J8.0Hz), 8.18 (d, 4H, J8.3Hz), 12.17 (s, 4H, heavy water exchange disappeared); time-of-flight mass...

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Abstract

An electroluminescent phosphor material has a formula: LnMBMLn, where L is the dual-tooth ligand with different structures, M is the 2-valence or 3-valence metal ion, n=1 or 2 and B is the bridge ligand. It includes red, green and blue materials. Its advantages are high thermal stability, good filming nature and high compatibility to polymer, and high electroluminescent effect.

Description

technical field [0001] The invention relates to a phosphorescent material, in particular to a kind of phosphorescent material which can be used in the field of organic electroluminescence. Background technique [0002] Today, with the development of multimedia technology and the advent of the information society, the requirements for the performance of flat panel displays are getting higher and higher. Three new display technologies emerging in recent years: plasma display, field emission display and organic electroluminescent display (OLED), all make up for the shortcomings of cathode ray tube and liquid crystal display to a certain extent. Among them, OLED has a series of advantages such as self-illumination, low-voltage DC drive, full curing, wide viewing angle, and rich colors. Compared with liquid crystal displays, OLED does not require a backlight, has a large viewing angle, low power consumption, and its response speed is faster than that of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/06
Inventor 邱勇王建华王立铎张德强
Owner TSINGHUA UNIV
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