864377-33-3Relevant articles and documents
ORGANIC COMPOUNDS, ORGANIC LIGHT EMITTING DIODE AND ORGNIC LIGHT EMITTING DEVICE HAVING THE COMPOUNDS
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Paragraph 0143; 0147-0149, (2019/06/05)
The present invention relates to an organic compound having an aromatic ring linked to a bipyridine moiety directly or through a linker in the bipyridine moiety. According to the present invention, the organic compound has a bipyridine moiety having excellent n-type characteristics, thereby minimizing exciton quenching by an interaction between a triplet exciton of a dopant and a peripheral hole-polarone. Accordingly, it is possible to prevent the lifespan of a light emitting diode element from being reduced by electro-oxidation and photo-oxidation. In addition, in the organic compound of the present invention, at least one of the bipyridine moiety and/or the aromatic ring is substituted with a cyano group, so that an energy band gap and an excited triplet energy level (T_1) are not deteriorated and luminous efficiency is thus improved. Therefore, the organic compound of the present invention can be used as a host of a light emitting material layer by being used with, for example, a delay fluorescent dopant emitting blue light. The organic compound of the present invention can be used in an organic light emitting diode and an organic light emitting device with improved luminous efficiency and especially element lifespan.COPYRIGHT KIPO 2019
Organic electro-luminescent compound and organic electro-luminescent device using same
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, (2018/03/26)
The invention provides an organic electro-luminescent compound and an organic electro-luminescent device using the same. The structural formula of the compound is as shown in formula I. The compound provided in the invention can be used as a hole injection layer material, a hole transfer layer material, a luminous layer material, an electron blocking layer material and a covering layer material, can lower drive voltage and improve efficiency, brightness, thermal stability, color purity and service life. Further, the organic electro-luminescent device manufactured with the organic compound hashigh efficiency and long service life.
1, 2, 4-thiadiazole derivatives and their use as electroluminescent materials
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, (2017/02/28)
The invention relates to design and synthesis of organic electroluminescence materials which take 1,2,4-thiadiazole electronics transmission groups as a central unit as well as an application of the 1,2,4-thiadiazole electronics transmission groups on an organic electroluminescent device (OLED). The electroluminescent materials take 1,2,4-thiadiazole as a core, groups with different electronic or cavity transmission groups are bonded at positions 3 and 5 sites of 1,2,4-thiadiazole, carrier balance can be effectively solved, exciton recombination with high efficiency is radically realized, thus further combination of high efficiency light-emitting and energy level adjustment of the material can be realized. In addition, the energy level of the compound can be adjusted through an unsymmetrical structure, compared with the electronics transmission groups (such as oxadiazoles, 1,3,5-triazole) in the common main materials, the OLED devices has substantial effects in brightness, efficiency, glass transition temperature and the like, so that the material provided in the invention can be widely applied in the field of organic electroluminescence.