929602-16-4Relevant articles and documents
Substituent position engineering of diphenylquinoline-based Ir(III) complexes for efficient orange and white PhOLEDs with high color stability/low efficiency roll-off using a solution-processed emission layer
Sarada, Ganguri,Yoon, Juho,Cho, Woosum,Cho, Minji,Cho, Daw Won,Kang, Sang Ook,Nam, Yeonsig,Lee, Jin Yong,Jin, Sung-Ho
, p. 113 - 120 (2015)
Three new heteroleptic Ir(iii) complexes o-LIrpic, m-LIrpic, and p-LIrpic (L = CF3DPQ) consisting of 2,4-diphenylquinoline (DPQ) with a -CF3 group at ortho (o)/meta (m)/para (p) positions of the metalated phenyl ring, respectively, as the main ligands were synthesized and used as emitters in phosphorescent organic light-emitting diodes (PhOLEDs). We realized that -CF3 position extremely affects the crucial photophysical and electronic properties such as emission color, photoluminescence quantum yield (PLQY) and energy levels of these Ir(iii) complexes resulting in -CF3 position-dependent performance of their PhOLEDs. To verify the effect of -CF3 group position on device performance, three other Ir(iii) complexes o-LIrtmd, m-LIrtmd, and p-LIrtmd were synthesized using the same main ligands but a different ancillary ligand. In the two series of Ir(iii) complexes, the devices with m-CF3 based complexes are outstanding in performance compared to o- or p-CF3 based ones due to the enhanced PLQY and well suppressed non-radiative deactivations by m-substitution. Finally, the single emission layer solution-processed orange and two-component white PhOLEDs fabricated using m-LIrpic as orange emitter achieved the maximum external quantum efficiency of 17.1% (43.9 cd A-1) and 21.1% (48.8 cd A-1), respectively, with highly stable color coordinates and low efficiency roll-off. This is the highest efficiency reported to date for solution-processed orange PhOLEDs using a small molecular host with easily accessible emitter.
Sustainable synthesis of quinolines (pyridines) catalyzed by a cheap metal Mn(I)-NN complex catalyst
Chai, Huining,Tan, Weiqiang,Lu, Yuanyuan,Zhang, Guangyao,Ma, Jiping
, (2020/05/22)
This study represents the first example of a bidentate phosphine-free manganese(I)-NN complex catalyst for the synthesis of quinolines (pyridines) through acceptorless dehydrogenative condensation of various secondary alcohols with amino alcohols. The coupling reactions occurred at 3 mol% catalyst loading and 110°C, and tolerated diverse functional groups. Moderate to excellent yields ranging from 45% to 89% were achieved after 12 hr of reaction. The present protocol provides a concise and environmentally friendly method for the construction of heterocyclic compounds.
Iridium (III) Complexes, method for preparaion of Iridium (III) Complexes, and Organic Light-Emitting Diodes comprising thereof
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Paragraph 0068; 0070, (2017/06/19)
The present invention relates to an iridium (III) complex which allows control of colors and shows excellent light-emitting characteristics, luminance and color purity. The present invention also relates to a method for preparing the iridium (III) complex