14159-55-8Relevant articles and documents
Transition metal complex, polymer, mixture, composition and organic electronic device
-
Paragraph 0207-0209, (2021/07/01)
The invention discloses a transition metal complex. The complex is represented by general formula (1) shown in the specification, G in the specification is selected from cycloalkane or a cage group, and the cage group is coordinated with a metal center in a monovalent anion form to obtain a more stable complex structure. The transition metal complex provided by the invention is used in an OLED, especially as a luminescent layer doping material, not only can provide higher luminous efficiency and longer device life, but also can improve the brightness and current efficiency of the device, and meanwhile, reduces the starting voltage to prolong the service life of the device.
Borane-Catalyzed Chemoselective and Enantioselective Reduction of 2-Vinyl-Substituted Pyridines
Hu, Chen-Yu,Li, Xiang,Liang, Xin-Shen,Liu, Ning,Tian, Jun-Jie,Tu, Xian-Shuang,Wang, Xiao-Chen,Yang, Zhao-Ying
supporting information, p. 18452 - 18456 (2020/08/21)
Herein, we report that highly chemoselective and enantioselective reduction of 2-vinyl-substituted pyridines has been achieved for the first time. The reaction, which uses chiral spiro-bicyclic bisboranes as catalysts and HBpin and an acidic amide as reducing reagents, proceeds through a cascade process involving 1,4-hydroboration followed by transfer hydrogenation of a dihydropyridine intermediate. The retained double bond in the reduction products permits their conversion to natural products and other useful heterocyclic compounds by simple transformations.
Green phosphorescent compound and organic electroluminescent device using same
-
Paragraph 0086-0088, (2019/08/12)
The invention discloses a green phosphorescent compound and an organic electroluminescent device using the same. The organic electroluminescent device includes an anode, a hole injection layer, a holetransport layer, a light emitting layer, an electron transport layer, an electron injection layer and a cathode which are sequentially deposited from each other. The organic electroluminescent devicecan use a phosphorescent compound represented by a following formula (1) as a dopant for the light emitting layer, wherein R1, R2, R3, R4, R5, R6, R7, R8 and R9 are each independently substituted orunsubstituted C1-C6 alkyl, C1-C6 alkoxyl, or halogens. The green phosphorescent material has the advantages of high efficiency, high color purity and narrow spectrum effect.