Organic metal complex and organic light-emitting device prepared from same

An organic light-emitting device and organometallic technology, applied in the direction of indium organic compounds, platinum group organic compounds, luminescent materials, etc., can solve the problems of poor thermal stability, short life, low luminous efficiency, etc., achieve high degree of π conjugation, co- The effect of increased yoke degree and good luminescence life

Inactive Publication Date: 2018-05-04
CHANGCHUN HYPERIONS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Organometallic complexes have good luminescent properties, and many of them have been widely studied in the scientific research and industrial production of OLED and other electroluminescent technologies, but there are still deficiencies. Phosphorescent materials generally have poor thermal stability and low luminous efficiency. The problem of short life, and the fundamental factor that determines the performance of organic electroluminescent devices is the choice of materials. Therefore, it is urgent to design and develop an organometallic complex with higher luminous efficiency, thermal stability and longer life.

Method used

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  • Organic metal complex and organic light-emitting device prepared from same
  • Organic metal complex and organic light-emitting device prepared from same
  • Organic metal complex and organic light-emitting device prepared from same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] [Example 1] Synthesis of Compound 1

[0053]

[0054] *Synthesis of Intermediate 1-2

[0055] Put raw material 1-1 (6.19g, 30mmol), iridium trichloride hydrate (3.53g, 10mmol), water 30mL, 2-ethoxyethanol 60mL in the reactor, stir and reflux for 15h at 110°C under nitrogen atmosphere , the reaction was completely cooled to room temperature, filtered and dried, washed with methanol and n-hexane in turn, and dried in vacuo to obtain intermediate 1-2 (5.04 g, 58.2%).

[0056] *Synthesis of Compound 1

[0057] Put raw material 1-1 (6.19g, 30mmol), intermediate 1-2 (8.66g, 10mmol), 2-ethoxyethanol 100mL, anhydrous potassium carbonate (8.28g, 60mmol) into the reactor, and the temperature is 80°C , stirred and reacted for 15h under a nitrogen atmosphere, the reaction was completely cooled to room temperature, filtered and drained, washed with ethanol and acetone successively, passed through a silica gel column after vacuum drying, and recovered under reduced pressure to o...

Embodiment 2

[0058] [Example 2] Synthesis of compound 4

[0059] According to the synthetic method of compound 1, compound 4 (4.09 g, 51%) was obtained.

[0060]

Embodiment 3

[0061] [Example 3] Synthesis of compound 10

[0062] According to the synthetic method of compound 1, compound 10 (3.48 g, 46%) was obtained.

[0063]

[0064] The FD-MS values ​​of the organometallic complexes prepared in the examples of the present invention are shown in Table 1.

[0065] 【Table 1】

[0066] compound

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Abstract

The invention discloses an organic metal complex and an organic light-emitting device prepared from the same, belonging to the technical field of organic optoelectronic materials. By complexing ligands with different pi conjugation degrees with transition metal ions, the molecular planarity is improved, the directed migration of charges is promoted, and the noradiative transition of the charges inan electroluminescence process is reduced, so that the light-emitting efficiency and thermal stability of a material are improved. The organic light-emitting device prepared from the organic metal complex has good light-emitting efficiency and light-emitting life, so that the problem of poor stability, low light-emitting efficiency and short service life of a phosphor material can be effectivelysolved.

Description

technical field [0001] The invention relates to the technical field of organic photoelectric materials, in particular to an organic metal complex and an organic light-emitting device thereof. Background technique [0002] As a key material in OLED devices, organic light-emitting materials can be roughly divided into three categories according to the principle of light emission: traditional fluorescent materials, phosphorescent materials and thermally activated delayed fluorescence (TADF) materials. Traditional fluorescent materials can only use 25% of singlet excitons to emit light, and the luminous efficiency is low. Phosphorescent materials can use 25% singlet excitons and 75% triplet excitons to radiate and emit light, which can theoretically achieve 100% internal quantum efficiency. In 1998, M.A.Baldo et al. doped transition metal platinum in the light emitting layer The organic chelating molecule PtOEt prepared a saturated red phosphorescent OLED device with an externa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F15/00C09K11/06H01L51/50H01L51/54
CPCC09K11/06C07F15/0033C09K2211/185H10K85/342H10K50/11
Inventor 蔡辉董秀芹
Owner CHANGCHUN HYPERIONS TECH CO LTD
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