Iridium complex phosphorescent material based on main ligand containing rigid aromatic amine functional group

A technology of functional groups and iridium complexes, applied in the field of organic light-emitting materials, can solve the problems of low performance of organic light-emitting diodes and affect the application of organic light-emitting diodes, and achieve the effect of inhibiting non-radiative transitions and enhancing molecular rigidity

Inactive Publication Date: 2019-04-19
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, ordinary organometallic complex phosphorescent materials are often difficult to take into account in terms of luminous quantum efficiency, carrier injection / transport ability, and molecular aggregation properties, etc., often due to the shortcomings of a certain aspect of the performance of the final organic light-emitting diode. Not high, affecting the practical application of organic light-emitting diodes

Method used

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  • Iridium complex phosphorescent material based on main ligand containing rigid aromatic amine functional group
  • Iridium complex phosphorescent material based on main ligand containing rigid aromatic amine functional group
  • Iridium complex phosphorescent material based on main ligand containing rigid aromatic amine functional group

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Embodiment 1

[0021] The organometallic iridium complex phosphorescent material Ir1 of the present embodiment has a chemical formula of C 51 h 33 IrN 4 o 2 , the molecular structure formula is:

[0022]

[0023] Refer to attached figure 1 , the synthesis steps are as follows:

[0024] The first step: 0.16g organic ligand Put 0.08g of iridium trichloride into the reaction vessel, add 30mL of tetrahydrofuran and water mixed solvent in nitrogen atmosphere, the volume ratio of tetrahydrofuran and water in the mixed solvent is 3:1, heat to 110°C in nitrogen atmosphere, and stir for 12 hours Cool to room temperature, separate the organic layer with a separatory funnel; dry the organic layer with anhydrous sodium sulfate, and remove the solvent by rotary evaporation to obtain an intermediate product;

[0025] The second step: under the condition of normal temperature nitrogen, dissolve 0.035g potassium tert-butoxide and 0.035g acetylacetone in 20mL dichloromethane, stir for 0.5h, then ad...

Embodiment 2

[0029] The organometallic iridium complex phosphorescent material Ir2 of the present embodiment has a chemical formula of C 45 h 32 IrN 3 o 4 S, the molecular structure formula is:

[0030]

[0031] Refer to attached figure 2 , the synthesis steps are as follows:

[0032] The first step: 0.083g organic ligand 0.077g organic ligand Put 0.08g of iridium trichloride into the reaction vessel, add 30mL of tetrahydrofuran and water mixed solvent in nitrogen atmosphere, the volume ratio of tetrahydrofuran and water in the mixed solvent is 3:1, heat to 110°C in nitrogen atmosphere, and stir for 12 hours Cool to room temperature, separate the organic layer with a separatory funnel; dry the organic layer with anhydrous sodium sulfate, and remove the solvent by rotary evaporation to obtain an intermediate product;

[0033] The second step: under the condition of normal temperature nitrogen, dissolve 0.035g potassium tert-butoxide and 0.035g acetylacetone in 20mL dichlorometh...

Embodiment 3

[0037] The organometallic iridium complex phosphorescent material Ir3 of this embodiment has a chemical formula of C47H29IrN4O2S2 and a molecular structural formula of:

[0038]

[0039] Refer to attached image 3 , the synthesis steps are as follows:

[0040] The first step: 0.2g organic ligand Put 0.098g of iridium trichloride into the reaction vessel, add 30mL of tetrahydrofuran and water mixed solvent in nitrogen atmosphere, the volume ratio of tetrahydrofuran and water in the mixed solvent is 3:1, heat to 110°C in nitrogen atmosphere, and stir for 12 hours Cool to room temperature, separate the organic layer with a separatory funnel; dry the organic layer with anhydrous sodium sulfate, and remove the solvent by rotary evaporation to obtain an intermediate product;

[0041] The second step: under the condition of normal temperature nitrogen, dissolve 0.108g potassium tert-butoxide and 0.115g acetylacetone in 20mL dichloromethane, stir for 0.5h and then add the interme...

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Abstract

Disclosed is an iridium complex phosphorescent material based on a main ligand containing a rigid aromatic amine functional group. The structural general formula is shown in the description. The electron-rich aromatic amine group contained in the luminescent material can ensure that the luminescent material has good carrier injection / transmission ability. According to the invention, the aromatic amine group in the luminescent material is locked by a single bond so as to prevent free rotation of a benzene ring on the ligand, inhibit non-radiative transition of a complex and enhance luminescentability of the complex. Meanwhile, the rigid structure can adjust an interaction mode among molecules in an aggregation state, change transition dipole orientation of the luminescent molecules, and help to enhance the luminescence properties of corresponding organic light-emitting diodes.

Description

technical field [0001] The invention relates to the technical field of organic luminescent materials, in particular to an iridium complex phosphorescent material based on a main ligand containing a rigid aromatic amine functional group. Background technique [0002] At present, display products are undergoing rapid development from display performance (resolution, contrast, brightness, color, and energy consumption, etc.) to appearance (such as volume, shape, and weight, etc.). Organic light-emitting diode technology has played a leading role in this development. In addition, organic light-emitting diode technology has also played a great role in promoting the field of energy-saving and healthy lighting. Whether it is applied in the field of display or lighting, the performance of organic light-emitting diodes greatly depends on the properties of the corresponding organic light-emitting materials, such as luminous quantum efficiency, carrier injection / transport ability, and...

Claims

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Application Information

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IPC IPC(8): C07F15/00C09K11/06
CPCC07F15/0033C09K11/06C09K2211/185
Inventor 孙源慧张引弟杨晓龙周桂江
Owner XI AN JIAOTONG UNIV
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