27012-25-5Relevant articles and documents
Platinum(ii) polymetallayne-based phosphorescent polymers with enhanced triplet energy-transfer: Synthesis, photophysical, electrochemistry, and electrophosphorescent investigation
Huang, Zuan,Liu, Boao,Zhao, Jiang,He, Yue,Yan, Xiaogang,Xu, Xianbin,Zhou, Guijiang,Yang, Xiaolong,Wu, Zhaoxin
, p. 36507 - 36519 (2015)
Two series of new phosphorescent copolymers with bicarbazole-based platinum(ii) polymetallayne backbones have been successfully prepared through Sonogashira cross-coupling with different IrIII ppy-type (ppy = 2-phenylpyridine anion) complexes as phosphorescent centers. The photophysical investigations not only indicate a highly efficient triplet energy-transfer process from the polymetallayne segments to the phosphorescent units in the polymer solution, but also figure out the structure-property relationship between the triplet energy-transfer process and the energy-levels of different excited states. In addition, the phosphorescent copolymers can produce yellow-emitting phosphorescent OLEDs (PHOLEDs) with high EL efficiencies and a current efficiency (ηL) of 11.49 cd A-1, an external quantum efficiency (ηext) of 4.38%, a power efficiency (ηP) of 3.78 lm W-1, and red-emitting PHOLEDs with a ηL of 5.86 cd A-1, ηext of 10.1%, and a ηP of 2.29 lm W-1, representing very decent electroluminescent performances achieved by the phosphorescent copolymers. Herein, this work not only furnishes very important clues for further polishing of this category novel phosphorescent polymer, but also provides a new approach to the design and synthesis of highly efficient phosphorescent copolymers.
Phosphorescent cyanide sensor based on a 2-phenylpyridine(ppy)-type cyclometalated Ir(III) complex bearing dimesitylboron group with concentration distinguishing ability
Feng, Zhao,Li, Huiying,Li, Yingju,Liu, Boao,Sun, Yuanhui,Yang, Zhimao,Yao, Chaofan,Zhong, Daokun,Zhou, Guijiang
supporting information, (2020/04/21)
With a 2-phenylpyridine(ppy)-type cyclometalated Ir(III) complex with –B(Mes)2 group Ir–B, the CNˉ ions can bind effectively with the boron atom in the –B(Mes)2 group to furnish CNˉ sensing ability through induc
A Mild Method for Electrochemical Reduction of Heterocyclic N-Oxides
Fukazawa, Yasuaki,Rubtsov, Aleksandr E.,Malkov, Andrei V.
supporting information, p. 3317 - 3319 (2020/05/25)
Deoxygenation of heteroaromatic N-oxides is commonly accomplished using chemical or enzymatic methods. In this work, we report on an expedient protocol for electrochemical reduction of pyridine N-oxide derivatives under mild conditions. A diverse range of mono- and bis N-oxides were converted into the corresponding nitrogen bases in good yields. Importantly, the method is highly selective towards N-oxides and tolerates challenging halo and nitro substituents in the heteroaromatic ring.
