The author of 《Phenyl- and Pyrazolyl-Functionalized Pyrimidine: Versatile Chromophore of Bis-Tridentate Ir(III) Phosphors for Organic Light-Emitting Diodes》 were Chen, Yi-Kuang; Kuo, Hsin-Hung; Luo, Dian; Lai, Yi-Ning; Li, Wei-Cheng; Chang, Chih-Hao; Escudero, Daniel; Jen, Alex K.-Y.; Hsu, Ling-Yang; Chi, Yun. And the article was published in Chemistry of Materials in 2019. Recommanded Product: 3764-01-0 The author mentioned the following in the article:
There is growing interest in the bis-tridentate Ir(III) emitters as they are expected to display both improved emission efficiency and improved photostability. Herein, the authors turned to the new emitters m2h-1-3 and m6h-1-3, bearing a pincer carbene ancillary and a chromophoric chelate derived from judiciously selected phenyl-pyrimidine-pyrazole entities (pzm2hF)H2 and (pzm6hF)H2, which differ in terms of the location of Ph and pyrazole substituents on the central pyrimidine. D. functional theory calculations revealed a notable change in the spin d. distribution from the pyrimidine-pyrazolate entity in m2h to the pyrimidine-Ph fragment in m6h. As a consequence, the m6h emitters exhibited both shortened emission lifetimes and improved stabilities during extensive photolysis in solution, while corresponding organic light-emitting diodes (OLEDs) doped with green-emitting m6h-1 and sky-blue-emitting m6h-2 and m6h-3 exhibited external quantum efficiencies of 17.6, 15.9, and 17.6%, resp., superior to those of all of their m2h counterparts at a practical luminance of 103 cd/m2. This finding suggests a new methodol. for fine-tuning the electronic transition that is important to high-performance and durable phosphorescent OLEDs. In the experimental materials used by the author, we found 2,4,6-Trichloropyrimidine(cas: 3764-01-0Recommanded Product: 3764-01-0)
2,4,6-Trichloropyrimidine(cas: 3764-01-0) is a member of organic chlorides. Organic chloride content in crude oil can be detected through specialized laboratory analysis. Care and attention are essential while sampling and testing.Recommanded Product: 3764-01-0
Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia