- A new series of pyrenyl-based triarylamines: Syntheses, structures, optical properties, electrochemistry and electroluminescence
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Five dipyrenyl-based triarylamines N-p-(R)-phenyl-N,N-dipyrenyl-1-amine (R = H (2a), CH3 (2b), OCH3 (2c), F (2d), NO2 (2e)) and one tripyrenyl-based triarylamine N,N-bis(7-tert-butylpyren-1-yl)-N-pyrenyl-1-amine (3py) were successfully synthesized by copper- and palladium-catalyzed coupling reactions in high yields. These compounds were structurally characterized and their photoelectric properties were analyzed by spectroscopy, electrochemical and theoretical studies. Moreover, the structures of 2b, 2c and 2d were determined by single-crystal X-ray diffraction analysis, indicating that the three compounds are all twisted paddle-like structures with a nitrogen atom as the linking center and the substituent attached to the para position of the benzene ring has an important effect on the intermolecular interactions. Compounds 2a-2d and 3py show green fluorescence emissions with excellent absolute fluorescence quantum yields in toluene (66.06-86.06%). Compound 2e displays a faint emission with a very low quantum yield because of the effect of the strong electron-withdrawing nitro group. They are thermally stable with decomposition temperatures above 355 °C. Organic light-emitting diodes incorporating the materials 2c and 2d as non-doped emitters were fabricated.
- Zhang, Ran,Zhao, Yun,Li, Guoling,Yang, Daisheng,Ni, Zhonghai
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- POLYCYCLIC AROMATIC COMPOUND, MATERIAL FOR ORGANIC DEVICES, ORGANIC ELECTROLUMINESCENT ELEMENT, DISPLAY DEVICE, AND LIGHTING DEVICE
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The present invention relates to a polycyclic aromatic compound represented by formula (1), a material for organic devices, an organic electroluminescent element, a display device, and a lighting device. The polycyclic aromatic compound according to the present invention is a light-emitting material having low triplet excitation energy (ET), and can be effectively used as a material for an organicdevice, particularly as a material for a light-emitting layer for forming a light-emitting layer of an organic electroluminescent element. In formula (1), R1 to R13 are each an aryl group, an alkyl group, a cycloalkyl group, an alkoxy group, an aryloxy group or the like, and any one of hydrogen, R12 and R13 contained in R2 is substituted with a pyrenyl group which may be substituted with an alkylgroup or a cycloalkyl group.
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Paragraph 0472; 0475-0477
(2020/12/30)
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- A and quinoline derivatives thereof in organic electroluminescent the application in the field of
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The invention relates to a compounded quindoline derivative as shown in the formula (1), wherein Ar1 and Ar2 are respectively independently selected from C6-C40 substituted or unsubstituted aromatic groups, or can be connected to form C3-C40 substituted or unsubstituted fused aromatic groups. The invention also relates to an application of the compound in organic electroluminescence devices, especially to an application of the compound used as a luminescence host material of OLED devices.
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Paragraph 0053; 0054; 0220; 0221; 0222
(2016/10/07)
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- Amine-based compounds and organic light-emitting device including the same
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Disclosed are an amine-based compound and an organic light emitting device including the same. The organic light emitting device comprises a first electrode, a second electrode facing the first electrode, and an organic layer interposed between the first electrode and the second electrode.
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Paragraph 0406; 0407; 0408; 0409
(2016/10/08)
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- Bifunctional organic materials for OLEDs based on Tr?ger's base: Subtle structural changes and significant differences in electroluminescence
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Three bifunctional organic materials based on Tr?ger's base (TB) scaffold have been designed, synthesized and their functional utility in OLEDs demonstrated through fabrication of devices. The diarylamino-functionalized TBs, i.e., A-TB, PA-TB and P-TB, are all amorphous with considerably high Tgs and permit modulation of electroluminescence with variation of one of the N-aryl rings, e.g., anthryl to 10-phenylanthryl to pyrenyl. Subtle structural modifications are found to manifest in rare pure yellow EL emission from PA-TB.
- Neogi, Ishita,Jhulki, Samik,Ghosh, Avijit,Chow, Tahsin J.,Moorthy, Jarugu Narasimha
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p. 3766 - 3772
(2015/02/19)
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- NEW DIAMINE DERIVATIVES AND ORGANIC ELECTRONIC DEVICE USING THE SAME
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The present invention relates to a new diamine derivative, and an organic electronic device using the same. The diamine derivative according to the present invention can serve as a hole injecting, hole transporting, electron injecting, electron transporting, or light emitting material in an organic electronic device including an organic light emitting device. Particularly, it can serve as a light emitting dopant as used alone, in particular, a blue light emitting dopant. The organic electronic device according to the present invention exhibits excellent characteristics in terms of efficiency, drive voltage, life time, and stability.
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Page/Page column 56
(2008/12/08)
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- 3,6,9-Trisubstituted carbazoles for light emitting diodes
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The present invention features substituted carbazole compounds of formula (I): Each of Z1 and Z2, independently, is each of A1 and A2, independently, is S, O, NR, or CH═CH; each of Y1 and y2/sup
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