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Bidentate ligand and its iridium complex and electroluminescent device therewith

A technology of bidentate ligands and iridium complexes, which is applied in the field of heavy metal element iridium complex light-emitting materials, can solve the problems of high cost and complicated preparation process, and achieve improved brightness and efficiency, excellent electrophosphorescence performance, and good current carrying Effect of Subtransfer Performance

Inactive Publication Date: 2005-10-12
WUHAN UNIV
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Problems solved by technology

However, the preparation process of this small-molecule-based electrophosphorescent device is relatively complex and expensive, and requires evaporation of multiple layers of materials under high vacuum.

Method used

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  • Bidentate ligand and its iridium complex and electroluminescent device therewith
  • Bidentate ligand and its iridium complex and electroluminescent device therewith
  • Bidentate ligand and its iridium complex and electroluminescent device therewith

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Embodiment Construction

[0026] 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.

[0027] 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.

[0028] 1: Ligand N-decyl-2-pyridylcarbazole (2-PyC), N-decyl-3-pyridylcarbazole (3-PyC) and N-ethyl-3-pyridylcarbazole Synthesis of azole (3-PyCE)

[0029] 2-Bromopyridine (0.47ml, 4.7mmol) was dissolved in 7.5ml of dry THF in a Schlenk tube, kept at -78°C, and n-butyllithium (2.5M in hexane, 4.0ml) was added dropwise over 15 minutes , 9.4mmol), after stirring for 45 minutes, anhydrous zinc chloride solution (1.28g, 9.4mmol dissolved in 15ml THF) was added, and gradually rose to room temperature within 15 minutes, and continued to stir for 1.5h. Then, add 2-bromo-N-n-decylcarbazole or 3-bromo-N-n-decylcarbazole (1.79g, 4.6mmol) ...

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Abstract

Bidentate ligand, iridium complex and electro-generated phosphorescent device of iridium complex are disclosed. The bidentate contains cavity transmission group carbazole, the chemical formula of the iridium complex is Ir(C^N)2 (acac), acac= acetyl acetone. The electro-luminescent device consists of conductive glass lining bottom, cavity injecting layer, luminescent layer and cathodic layer. The doping material of luminescent layer is iridium complex of bidentate ligand. Its advantages include to balance transmission ability of current carrier, and to improve brightness and efficiency of device for organic electro-luminescent domain.

Description

technical field [0001] The invention relates to the field of organic electroluminescent materials, in particular to a heavy metal element iridium complex luminescent material. Background technique [0002] With the advent of the information age, displays have been widely used in the fields of instruments, computers, communication equipment, and household appliances. Traditional cathode ray tubes and liquid crystal displays have become increasingly unable to meet people's needs because of their own shortcomings. For example: the former has large volume, slow response, and low efficiency, while the latter also has disadvantages such as small viewing angle, slow response, complex process, and passive lighting. [0003] In 1987, C.W.Tang (Appl.Phys.Lett.1987,51,913) of Kodak Corporation of the United States reported that in a double-layer organic thin film structure, 8-hydroxyquinoline aluminum (Alq 3 ) as luminescent material, low driving voltage (10V), high brightness (1000cd...

Claims

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Application Information

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IPC IPC(8): C07D401/04C07F15/00H05B33/14
Inventor 杨楚罗张小伟秦金贵曹镛
Owner WUHAN UNIV
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