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Fused ring compound, preparation method and applications thereof

A compound and fused ring technology, which is applied in the field of fused ring compounds and their preparation, can solve the problems of reduced luminous efficiency, shortened service life, and low energy transfer efficiency of devices

Active Publication Date: 2020-04-21
NINGBO LUMILAN NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects of low stability and low energy transfer efficiency of the main material of the light-emitting layer in the prior art, resulting in reduced luminous efficiency and shortened service life of the device, thereby providing a fused ring compound and its Preparation method and application

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  • Fused ring compound, preparation method and applications thereof
  • Fused ring compound, preparation method and applications thereof
  • Fused ring compound, preparation method and applications thereof

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preparation example Construction

[0168] The preparation method of compound 1 specifically comprises the following steps:

[0169] (1) Synthesis of intermediate 1-E:

[0170] Get 500 milliliters of double-necked round-bottomed flasks and put into stirrer bar and connect reflux tube, fill with nitrogen after drying; Add compound o-nitrophenylboronic acid (16.70 grams, 1 equivalent, 0.1mol), o-bromoiodobenzene ( 28.19 grams, 1.0 equivalent, 0.1mol), potassium carbonate (K 2 CO 3 , 1.5 equivalents), ethanol (50 ml), water (50 ml), toluene (200 ml), tetrakis(triphenylphosphine) palladium (Pd(PPh 3 ) 4 , 0.05 equivalent), then heated to reflux and reacted for 12 hours, cooled to room temperature after the reaction was completed; added 200 ml of water to quench, dichloromethane (3 × 400 ml) extracted; the resulting extract was added to magnesium sulfate in order to dry , filtered and spin-dried; the crude product was purified by chromatography (ethyl acetate / hexane, 1 / 10) to obtain intermediate 1-E (17.45 g, yie...

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Abstract

The invention discloses a fused ring compound, a preparation method and applications thereof. The fused ring compound has a structure represented by a formula (I) or a formula (II). According to the invention, the main body part of the compound serves as a large electron donor center and is well paired with an electron withdrawing group, so that electrons and holes are transmitted in a balanced manner, and effective combination of the electrons and the holes is promoted; the transmission capability of carriers is moderate, so that disappearing caused by over-high carrier concentration is avoided; hOMO and LUMO energy levels are matched with adjacent materials, and the driving voltage is small, so that the service life is remarkably prolonged; and the fused ring compound has good thermal stability and an appropriate sublimation temperature, and can avoid the thermal decomposition of a material in a film forming or using process, avoid the function loss of a material layer, and improve the luminous efficiency and the luminous performance of a device. The invention further provides a preparation method of the fused ring compound, an organic electroluminescent device and applications of the organic electroluminescent device in a lighting device or a display device.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a condensed ring compound and its preparation method and application. Background technique [0002] In 1987, Dr. Deng Qingyun and others from the laboratory of Eastman Kodak in the United States made the first organic light-emitting diode (OLED) device by vacuum evaporation for the first time, which is transparent and conductive. Indium tin oxide (ITO) is used as the anode, and diamine derivatives and tris(8-hydroxyquinoline)aluminum are sequentially evaporated on it, and magnesium-silver alloy is used as the cathode material. This multilayer structure can reduce the OLED device The driving voltage is high, and the problem of charge injection between the material molecule and the electrode interface is effectively improved, and the device performance and life are also improved. [0003] Compared with inorganic electroluminescent devices (electro luminescence devices, ELDs), OLE...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D209/94C07D401/14C07D403/04C07D403/10C07D409/04C07D413/04C07D487/04C07D491/048C07D495/04C07F9/6568C09K11/06H01L51/54
CPCC07D403/10C07D413/04C07D401/14C07F9/65685C07D409/04C07D209/94C07D403/04C07D491/048C07D495/04C07D487/04C09K11/06C09K2211/1059C09K2211/1029C09K2211/1048C09K2211/1096C09K2211/1092C09K2211/1044C09K2211/1033C09K2211/1037H10K85/654H10K85/6565H10K85/657H10K85/6572
Inventor 李祥智蔡烨丁欢达吴彤魏定纬陈志宽
Owner NINGBO LUMILAN NEW MATERIAL CO LTD
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