- NOVEL ORGANIC COMPOUND AND MATERIALS FOR ORGANIC ELECTROLUMINESCENT DEVICES COMPRISING THE SAME AND ORGANIC ELECTROLUMINESCENT DEVICES COMPRISING THE SAME
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The present invention provides a novel organic compound represented by chemical formula 1, a material for an organic electroluminescent device including the organic compound, and an organic electroluminescent device. The present invention can improve color purity and device life.
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Paragraph 0276; 0287-0290
(2020/12/16)
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- COMPOUNDS WITH SPIROBIFLUORENE-STRUCTURES
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The present invention describes spirobifluorene derivatives substituted by pyridine and/or pyrimidine groups, especially for use in electronic devices. The invention further relates to a process for preparing the compounds of the invention and to electron
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Paragraph 0186-0187
(2019/04/25)
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- Organic electroluminescence device
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The invention provides an organic electroluminescence device, which relates to the technical field of organic electroluminescence. The organic electroluminescence device is obtained by designing a hole transport layer and/or a luminescent auxiliary layer and an electron transport layer consisting of specific compositions. By virtue of the combination, the electron transport rate can be improved, the hole and electron injection rate can be effectively balanced, the injection balance of a current carrier on a luminescent layer can be realized, the shortening of service life of the device causedby the heat accumulation on interfaces among the electron transport layer, the electron transport layer and the luminescent layer can be avoided, the organic electroluminescence device has the advantages of high luminescent efficiency and long service life, and the problems that the organic electroluminescence device is high in starting voltage, short in service life and low in luminescent efficiency caused by imbalance of the current carrier injection can be effectively solved.
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Paragraph 0227-0229
(2019/01/14)
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- [...][...] complex and its preparation method and application
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The invention relates to a spirobifluorene trifluoromethyl pyridine iridium complex as well as a preparation method and an application thereof. The structural formula of the spirobifluorene trifluoromethyl pyridine iridium complex is as shown in the description. Two orange luminous iridium complexes lead vertical spirobifluorene with large volume and relatively large steric hindrance and trifluoromethyl capable of causing the red shift of luminous wavelengths to phenylpyridine so that the orange luminous efficiency and the luminous property of materials and devices are improved and emitting colors can be adjusted. The invention also provides the preparation method of the spirobifluorene trifluoromethyl pyridine iridium complex and the application of the spirobifluorene trifluoromethyl pyridine iridium complex in orange and white organic light-emitting devices. The orange and white organic light-emitting devices based on the two orange luminous iridium complexes show up very good stability under high electric current density; and the type of orange luminous materials has excellent performances, and the devices have good luminous performances.
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Paragraph 0016; 0044; 0046
(2018/04/26)
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- Compound and application thereof and organic electroluminescent device
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The invention discloses a compound and application of the compound in preparing an organic electroluminescent device, and further provides the organic electroluminescent device. The organic electroluminescent device includes the compound. The compound can effectively reduce the working voltage of the organic electroluminescent device and improve the luminescent efficiency of the organic electroluminescent device.
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Paragraph 0093; 0094
(2018/03/24)
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- Triazine compound containing fluorene structure and organic luminous device thereof
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The invention discloses a triazine compound containing a fluorene structure and an organic luminous device thereof and relates to the technical field of organic optoelectronic materials. On the one hand, triazine group structures are stable and have high glass transition temperature, high electronic mobility and a low energy level, fluorene groups are three-dimensional spatial structures and can effectively prevent molecular aggregation and inhibit crystallization of molecules, and by means of the advantages of the fluorene groups that the fluorene groups are easy to modify and high in rigidness, the structure of the compound is stable. On the other hand, the triazine groups are combined with the fluorene groups and connected with the fluorene groups through benzene rings or biphenyl rings, conjugated systems are increased, continuous pi-conjugated systems bring great electronic mobility, and therefore high electronic mobility is achieved. Moreover, through the combination of the two kinds of groups, transmission of carriers is balanced. By applying the compound in the organic luminous device to serve as an electronic transmission layer or a cavity blocking layer for use, the device has the advantages that the driving voltage is low and the luminous efficiency is high, and is superior to existing frequently-used OLED devices.
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Paragraph 0109; 0110; 0111
(2018/10/11)
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- Organic electroluminescence compound and organic electroluminescence element
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The invention provides an organic electroluminescence compound. The organic electroluminescence compound is shown in a chemical formula (I), in the previous formula, A and A' are respectively and independently R0 or R1, R0 is 9, 9'- spirobifluorene-2'-yl, R1 can be selected from substituted or unsubstituted aromatic base, heterocyclic aromatic base or heterocyclic base and the like; at least one of A and A' is R0. The compound in the chemical formula (I) is an electron transport material, so that the luminescence efficiency and the heat stability of an electroluminescence element can be improved. The invention also provides the organic electroluminescence element prepared by the organic electroluminescence compound.
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Paragraph 0060; 0061
(2017/08/31)
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- ORGANIC ELECTROLUMINESCENCE AND ORGANIC ELECTROLUMINESCENCE ELEMENT
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This invention provides an organic electroluminescent compound, which is represented by the following chemical formula (I). In the above formula, A and A' are each independently R0 or R1, and R0 is 9,9'-spirobifluorene-2'-yl, R1 may be selected from substituted or unsubstituted aryl, heteroaryl or heterocyclyl; and at least one of A and A' must be R0. The compound of the formula (I) may be an electron transport material and thereby improve the luminous efficiency and thermal stability of a light emitting element. This invention further provides an organic electroluminescent element made from the organic electroluminescent compound.
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Paragraph 0039; 0040
(2018/05/03)
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- Novel spyrobifluorene type organic compounds and an organic electroluminescent device comprising the same
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The present invention provides a novel compound represented by the following Chemical Formula 1 and an organic electroluminescent device comprising the same.COPYRIGHT KIPO 2015
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Paragraph 0080; 0081; 0082; 0083; 0084
(2016/10/31)
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- Spiro compounds, and their use
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The present invention relates to novel spiro compounds of the formula (I)
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