1219956-23-6Relevant articles and documents
A compound. Electron transport material and organic electroluminescent device
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, (2021/09/01)
The present application provides a compound of formula (I), which may be used in an electron transport material. The compound has the parent structure of electrosorption fragment biphenanthroline, has high bond energy among atoms, has good thermal stability, is favorable for solid accumulation of molecules, has strong electronic transition capability, can effectively reduce the driving voltage of an organic electroluminescent device, improves the current efficiency and prolongs the service life. The invention further provides an organic electroluminescent device comprising the compound of the general formula (I) and a display device.
POLYCYCLIC COMPOUND, MATERIAL FOR AN ORGANIC ELECTROLUMINESCENCE DEVICE AND AN ORGANIC ELECTROLUMINESCENCE DEVICE COMPRISING THE POLYCYCLIC COMPOUND
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Paragraph 0113; 0264-0265, (2021/07/02)
Specific polycyclic compounds represented by formula (la) or (lb), a material for an organic electroluminescence device comprising said specific polycyclic compound, an organic electroluminescence device comprising said specific polycyclic compound, an el
Polyfluorene derivative and organic light-emitting device thereof
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Paragraph 0085-0087; 0090-0091; 0106; 0109-0110, (2018/10/19)
The invention provides a polyfluorene derivative and an organic light-emitting device thereof, and belongs to the technical field of organic photoelectric materials. The derivative has a structure shown as a formula (I). The polyfluorene derivative disclosed by the invention has a larger conjugate plane structure, so that high electron fluidity can be provided; electron-deficient group dibenzofuran, dibenzothiophene, acridine, phenoxazine and phenothiazine structures are introduced to better facilitate the acception of electrons and enable the polyfluorene derivative to have good transmissionperformance; by introducing a bridged structure, on the one hand, the molecular weight of the compound can be enlarged, and the obtained material is enabled to have high glass transition temperature and prevent the crystallization effect; on the other hand, the derivatives are enabled to have certain distortion in three-dimensional stereoscopic structure, and the film-forming property of the derivative is improved. The organic light-emitting device, which is prepared by using the compound as a main body material in a luminescent layer, shows the advantages of low driving voltage and high luminous efficiency; the polyfluorene derivative is an organic luminescent material with excellent performance.