188844-98-6Relevant articles and documents
Palladium(0)-catalyzed amination, stille coupling, and Suzuki coupling of electron-deficient aryl fluorides
Kim, Young Mi,Yu, Shu
, p. 1696 - 1697 (2003)
The amination of 2-fluoronitrobenzene was Pd(0) catalyzed at 65 °C in DMF, and the effectiveness of the catalysis was ligand-dependent. Among the five catalyst systems investigated, Pd(PPh3)4 was the most effective catalyst. The cont
A new series of N-substituted tetraphenylethene-based benzimidazoles: Aggregation-induced emission, fast-reversible mechanochromism and blue electroluminescence
Zhang, Tengfei,Zhang, Ran,Zhao, Yun,Ni, Zhonghai
, p. 276 - 285 (2017/09/20)
Four new N-substituted tetraphenylethene-based benzimidazoles N-R-2-(4-(1,2,2-triphenylvinyl)phenyl)-1H-benzo[d]imidazoles (R = phenyl (3a), R = 4-(tert-butyl)phenyl (3b), R = n-butyl (3c), R = n-hexyl (3d)) were synthesized conveniently by cyclization reaction of 4-tetraphenylenthenealdehyde with N-substituted ortho-nitroaniline. The four compounds exhibit typical aggregation-induced emission (AIE) property with relatively high solid state absolute fluorescence quantum yields (38.1–65.7%) and fast-recoverable mechanochromism property with solid-state fluorescence change between blue and yellow-green. They are thermally stable with decomposition temperatures above 319 °C. Both of multilayer electroluminescence devices fabricated with compounds 3b and 3c as emitters are blue emission. The turn-on voltage of device based on compound 3b is 3.3 V with maximum luminance and current efficiency of 2470 cd/m2 and 1.48 cd/A, respectively.
Novel bemzimidazole-carbazole derivative, preparation method thereof and organic light-emitting diode using the same
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Paragraph 0118; 0119, (2016/10/24)
The present invention refers to of organic light-emitting device having phosphorescent blue emitting materials and can be used for high-benzimidazol-carbazole derivatives and their manufacturing method relates to, novel benzimidazole-carbazole derivatives the present invention according to an electronic it is a donator cover and antiviral electronic it is a receptor benzimidazole the combustion furnace through a blue of phosphors-emitting diodes for emitting sufficient energy to corresponding to blue has exhibits a good therefor, thermal stability and conformational invention have superior stability to in producing a thin film for an organic light-emitting device, of the physical properties of the device even at high temperatures and display good as a material of a luminescent layer without changing them since performance is kept at a, using the same useful as emitting materials for an organic light-emitting device can be used. (by machine translation)