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Multi-element ring-containing compound, application and organic electroluminescent device

A multi-ring, compound technology, applied in the field of compounds containing multi-ring, organic electroluminescent devices, can solve the problems affecting the luminous efficiency and working voltage of the device, and achieve the improvement of hole transport and injection efficiency, increase hole concentration and Effect of hole mobility, good thermal stability

Active Publication Date: 2019-06-25
NINGBO LUMILAN NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the defects in the prior art that the dopant material doped in the hole transport material is likely to affect the performance of the device such as luminous efficiency and operating voltage, thereby providing a multi-ring containing Compounds, Applications and Organic Electroluminescent Devices

Method used

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  • Multi-element ring-containing compound, application and organic electroluminescent device
  • Multi-element ring-containing compound, application and organic electroluminescent device
  • Multi-element ring-containing compound, application and organic electroluminescent device

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Embodiment 1

[0034] This embodiment provides a compound containing multiple rings, which has the structure shown in the following formula C-1:

[0035]

[0036] The synthetic route of the compound containing polycyclic ring shown in formula C-1 is as follows:

[0037]

[0038] The preparation method of the compound containing multiple rings shown in formula C-1 specifically comprises the following steps:

[0039] (1) Compound 2 (1.0 eq) was dissolved in DMF (5 volumes), potassium carbonate (2.0 eq) and compound 1 were added, and the reaction was stirred at room temperature for 48 h. After the reaction was completed, water was added, extracted three times with ethyl acetate, the extracts were combined, washed three times with water, dried over sodium sulfate, and spin-dried to obtain the crude product of compound 3;

[0040] (2) Prepare 50% acetic acid aqueous solution, then add sulfuric acid with 10% acetic acid volume, add compound 3 (1.0 equivalent) to the above solution, react un...

Embodiment 2

[0046] This embodiment provides a compound containing multiple rings, which has the structure shown in the following formula C-2:

[0047]

[0048] The synthetic route of the compound containing multiple rings shown in formula C-2 is as follows:

[0049]

[0050] The preparation method of the compound containing multiple rings shown in formula C-2 specifically comprises the following steps:

[0051] (1) Compound 8 (1.0 eq) was dissolved in DMF (5 volumes), potassium carbonate (2.0 eq) and compound 9 were added, and the reaction was stirred at room temperature for 48 h. After the reaction was completed, water was added, extracted three times with ethyl acetate, the extracts were combined, washed three times with water, dried over sodium sulfate, and spin-dried to obtain the crude product of compound 10;

[0052] (2) Prepare 50% acetic acid aqueous solution, then add sulfuric acid with 10% acetic acid volume, add compound 10 (1.0 equivalent) to the above solution, react u...

Embodiment 3

[0058] This embodiment provides a compound containing multiple rings, which has the structure shown in the following formula C-25:

[0059]

[0060] The synthetic route of the compound containing polycyclic ring shown in formula C-25 is as follows:

[0061]

[0062] The preparation method of the compound containing multiple rings shown in formula C-25 specifically comprises the following steps:

[0063] (1) Compound 2 (1.0 eq) was dissolved in DMF (5 volumes), potassium carbonate (2.0 eq) and compound 1 were added, and the reaction was stirred at room temperature for 48 h. After the reaction was completed, water was added, extracted three times with ethyl acetate, the extracts were combined, washed three times with water, dried over sodium sulfate, and spin-dried to obtain the crude product of compound 3;

[0064] (2) Prepare 50% acetic acid aqueous solution, then add sulfuric acid with 10% acetic acid volume, add compound 3 (1.0 equivalent) to the above solution, react...

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Abstract

The invention discloses a multi-element ring-containing compound, application and an organic electroluminescent device. The molecular design is carried out on the multi-element ring-containing compound, so that low molecular LUMO energy level (-4.0 to -6.0 ev) is effectively realized, and the LUMO energy level of the molecule can be well matched with the HOMO of a hole transport material, when themulti-element ring-containing compound is used as a hole doping material in the organic electroluminescent device, the hole concentration and the hole mobility can be effectively improved, and the hole transmission and injection efficiency can be improved. Meanwhile, through accurate regulation and control of the molecular structure, the molecule has good thermal stability, low volatility and high decomposition temperature, and can be uniformly and stably distributed in a specific functional layer.

Description

technical field [0001] The invention shows the technical field, and specifically relates to a compound containing multiple rings, its application and an organic electroluminescence device. Background technique [0002] Organic electroluminescent (OEL) devices (hereinafter referred to as "OEL" devices) have a series of advantages such as self-luminescence, high contrast, wide color gamut, wide viewing angle, and fast response. In 1963, Pope et al. first discovered the phenomenon of electroluminescence of organic compounds [JChemPhys,38:2042]. In 1987, C.T.Tang et al. first invented the OEL device, and realized low-voltage, high-brightness luminescence [ApplPhysLett,1987,51: 913]. [0003] Current OEL devices generally include opposite cathodes and anodes and one or more organic layers sandwiched between the two electrodes. Electrons and holes are respectively injected into the organic layer from the cathode and the anode, and finally recombine in the organic light-emitting ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C255/51C07D213/61C07D487/04C07D213/57C07C255/35C07D401/14C07D241/38H01L51/50H01L51/54
CPCC07C255/51C07D213/61C07C2601/04H10K85/60H10K85/654H10K50/155H10K50/17Y02E10/549
Inventor 陈志宽谢坤山孙华
Owner NINGBO LUMILAN NEW MATERIAL CO LTD
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