211685-96-0Relevant articles and documents
Carbazole compound, light-emitting element, light-emitting device, electronic device, and lighting device
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Page/Page column 56, (2015/05/26)
A novel carbazole compound is provided which can be used as a host material for a light-emitting substance (substance emitting fluorescence or substance emitting phosphorescence). A light-emitting element with high emission efficiency, and a light-emittin
N-phenyl triscarbazole
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Page/Page column 17, (2012/04/10)
The present invention relates to a novel triscarbazole compound having substituent on N-phenyl, which can be represented by Formula (I). wherein R1 is selected from the group consisting of halogen or alkyl or alkoxy group having 1 to 20 carbon atoms wherein one or more hydrogen atom may be replaced by halogen; RA, RB, Rc, RD and RE are any of substituents; and i, j, k, l and m are same or different at each occurrence and represent an integer from 0 to 4. By introduction of the substituent on N-phenyl, the device efficiency, stability and lifetime can be increased while maintaining the solubility. These compounds can be used in various organic devices such as organic light emitting diodes, photovoltaic cells or organic semiconductor devices.
Dendritic structure having a potential gradient: New synthesis and properties of carbazole dendrimers
Albrecht, Ken,Yamamoto, Kimihisa
supporting information; experimental part, p. 2244 - 2251 (2009/07/30)
A new synthetic route for carbazole dendrimers was discovered using the copper-catalyzed N-arylation reaction. This synthetic route allowed synthesizing the fourth generation carbazole dendrimer and several derivatives for the first time. The crystal structure, Mark-Houwink-Sakurada plots, and UV-vis and fluorescence studies showed that the dendritic carbazole backbone has a rigid and highly twisted structure. From the measurement of the redox potential of the ferrocene derivatives, the IR spectra of the benzophenone derivatives, and complexation behavior of the phenylazomethine derivatives, the inductive electron-withdrawing effect of the carbazole dendron was revealed. This suggested that the summation of this electron withdrawal from each layer may produce a potential gradient such that the outer layer is electron-rich and the inner layer is electron-poor in the carbazole dendron. By assignment of the 1H and 13C NMR spectra of the dendron, the existence of this kind ofpotential gradient was proved. Overall, these data show the ?-polari zation substituent effect of the carbazole unit, and their summation determines the potential gradient in the repeating dendritic structure of the carbazole dendrimer.