Oxygen-Bridged Triphenylamine Units Tuning the Photophysical Properties of Classical Phosphorescent Iridium(III) Complex was written by Cao, Yibo;Song, Jialiang;Li, Gang;Zheng, Ying;Shi, Chao;Li, Qiuxia;Yuan, Aihua. And the article was included in ChemistrySelect in 2021.Application of 54151-74-5 This article mentions the following:
A new yellow phosphorescent iridium(III) complex Ir(ppybop)2acac with two oxygen-bridged triphenylamine units were prepared and investigated. The cyclometalating ligand ppybop was synthesized by the efficient Suzuki-Miyaura cross-coupling reaction of oxygen-bridged triarylamine unit based boron reagent 1-a and 2-(4-Bromophenyl)pyridine, and the acetylacetone (acac) was used as an auxiliary ligand. Notably, the complex Ir(ppybop)2acac measured with a fluorescence spectrophotometer can show a larger red shift emission (λem = 568 nm), a narrower full width at half maximum (FWHM = 59 nm), a longer emission lifetime (τ[b] = 3127 ns) and a better solubility in comparison with the classical green complex Ir(ppy)2acac (λem = 520 nm, FWHM = 70 nm, τ[b] = 1206 ns). In addition, the DFT calculation results indicate that the strong electron-donating ability of the unit can lead to the unusual ligand-to-metal charge transfer (3LMCT) excited state characteristics of Ir(ppybop)2acac, which is completely different from the metal-to-ligand charge transfer (3MLCT) in Ir(ppy)2acac. This result can provide a new strategy for the design of new phosphorescent iridium(III) complexes. In the experiment, the researchers used many compounds, for example, 2-Bromo-4-phenylpyridine (cas: 54151-74-5Application of 54151-74-5).
2-Bromo-4-phenylpyridine (cas: 54151-74-5) belongs to pyridine derivatives. Pyridines are an important class of heterocycles and occur in polysubstituted forms in many naturally occurring biologically active compounds, drug molecules and chiral ligands. Pyridine, its benzo and pyridine-based compounds play diverse roles in organic chemistry. Pyridine-based materials are valued for their optical and physical properties as well as their medical potential. Application of 54151-74-5