- One-pot two-step synthesis of: N -arylcarbazole-based skeleton
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A highly site-selective, one-pot, sequential C-N and C-C bond forming process was developed, affording a carbazole-based skeleton that contains biphenyl and diarylacetylene cores. The success of this process is attributed to the use of fluorinated iodoarenes as the starting material, the fluorine group of which preferentially reacts with carbazole. The subsequent coupling of the intermediate iodinated N-arylcarbazole with arylboronic acid or arylacetylene produced the desired products. The intermediate underwent a Pd-catalyzed Ullmann coupling with excess fluorinated iodoarenes in the absence of arylboronic acid or arylacetylene, resulting in Ullmann coupling products in a one-pot process.
- Tao, Sheng,Liu, Ning,Dai, Bin
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- Organic electroluminescent host material and application thereof in organic electroluminescent device
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The invention relates to an organic electroluminescent host material. In an organic light-emitting device, in order to reduce the problems of exciton quenching, efficiency roll-off, device service life shortening and the like caused by too high exciton concentration in a light-emitting layer, a light-emitting layer structure generally adopts a host-guest doping mode. Aiming at different luminescent material systems/luminescent mechanisms, the requirements on the basic performance of the host material are different. The invention designs an organic electroluminescent host material based on a 3,3'-dicarbazole unit and a 9,9'-diphenyl fluorene steric hindrance group end capping. The dicarbazole unit endows the material with good carrier transport performance, and end group steric hindrance can effectively inhibit local aggregation of a light-emitting guest. According to different luminescent material systems, the polarity and size of molecules are adjusted by changing the difference of carbazole N-substituent (R), so that the comprehensive optimization of the device performance is realized.
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Paragraph 0049; 0053-0055
(2021/07/17)
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- Suzuki–Miyaura Coupling of (Hetero)Aryl Sulfones: Complementary Reactivity Enables Iterative Polyaryl Synthesis
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Ideal organic syntheses involve the rapid construction of C?C bonds, with minimal use of functional group interconversions. The Suzuki–Miyaura cross-coupling (SMC) is a powerful way to form biaryl linkages, but the relatively similar reactivity of electrophilic partners makes iterative syntheses involving more than two sequential coupling events difficult to achieve without additional manipulations. Here we introduce (hetero)aryl sulfones as electrophilic coupling partners for the SMC reaction, which display an intermediate reactivity between those of typical aryl (pseudo)halides and nitroarenes. The new complementary reactivity allows for rapid sequential cross-coupling of arenes bearing chloride, sulfone and nitro leaving groups, affording non-symmetric ter- and quateraryls in only 2 or 3 steps, respectively. The SMC reactivity of (hetero)aryl sulfones is demonstrated in over 30 examples. Mechanistic experiments and DFT calculations are consistent with oxidative addition into the sulfone C?S bond as the turnover-limiting step. The further development of electrophilic cross-coupling partners with complementary reactivity may open new possibilities for divergent iterative synthesis starting from small pools of polyfunctionalized arenes.
- Chatelain, Paul,Sau, Abhijit,Rowley, Christopher N.,Moran, Joseph
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supporting information
p. 14959 - 14963
(2019/11/05)
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- ORGANIC MIXTURE, COMPOSITION, AND ORGANIC ELECTRONIC COMPONENT
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Disclosed in the present application is an organic mixture. The organic mixture comprises two organic compounds H1 and H2. The organic compound H1 has electron transmission performance, and the organic compound H1 satisfies: Δ((LUMO+1)?LUMO)≥0.1 eV, and min((LUMO(H1)?HOMO(H2), LUMO(H2)?HOMO(H1))≤min(ET(H1), ET(H2)). The organic compound H1 and the organic compound H2 are easy to form exciplexes and have balanced electron transmission properties, the organic compound Hi has high stability of electron transmission, and accordingly the efficiency and the service life of related electronic components can be effectively improved, and a feasible solution for improving overall performance of the electronic components is provided.
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Paragraph 0198
(2020/01/03)
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- ORGANIC COMPOUND, ORGANIC LIGHT EMITTING DIODE AND ORGANIC LIGHT EMITING DEVICE HAVING THE COMPOUND
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The present invention refers to the highest level is calculated by calculating a smallest track occupied molecules track molecules containing molecules path energy level and high energy, low energy corresponds to the energy level path track function is an electron donor moiety containing molecules in both molecules distributed subbands cells with an organic compound, an organic compound applied to the organic light-emitting diodes and organic light-emitting device of the whole structure are disclosed. They are out of charge-transporting organic compounds of the present invention, distributed in charge injection delay caused a rise in drive voltage can be prevent, with an adjacent layer interface region in emission since before al but capable, can be semiconductor layer on the organic layer. (by machine translation)
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Paragraph 0141-0145
(2019/05/11)
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- ORGANIC COMPOUND, AND ORGANIC LIGHT EMITTING DIODE AND ORGANIC LIGHT EMITTING DISPLAY DEVICE INCLUDING THE SAME
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The present invention provides an organic compound for an organic light emitting diode. An example of the organic compound is represented by:
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Paragraph 0152; 0153
(2018/05/24)
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- ORGANIC OPTOELECTRIC DEVICE AND DISPLAY DEVICE
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An organic optoelectric device includes an anode and a cathode facing each other, an emission layer between the anode and the cathode, a hole transport layer between the anode and the emission layer, a hole transport auxiliary layer between the hole transport layer and the emission layer, an electron transport layer between the cathode and the emission layer, and an electron transport auxiliary layer between the electron transport layer and the emission layer, wherein the electron transport auxiliary layer includes a first compound represented by the following Chemical Formula 1, and the hole transport auxiliary layer includes a second compound represented by the following Chemical Formula 2: ?? [Chemical Formula 1] ?????[Chemical Formula 2]A display device including the organic optoelectric device is provided.
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Paragraph 0145; 0151; 0157
(2017/12/01)
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- NOVEL COMPOUND AND ORGANIC ELECTRONIC DEVICE USING SAME
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The present invention relates to a novel compound and an organic light emitting device using the compound, and the compound according to the present invention may largely improve a life span, efficiency, electrochemical stability and thermal stability of the organic light emitting device.
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Page/Page column 37
(2011/08/03)
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