Youssef, Heba; Sedykh, Alexander E.; Becker, Jonathan; Schafer, Thomas; Taydakov, Ilya V.; Li, Huanrong R.; Mueller-Buschbaum, Klaus published an article in 2021. The article was titled 《Variable Luminescence and Chromaticity of Homoleptic Frameworks of the Lanthanides together with Pyridylpyrazolates》, and you may find the article in Chemistry – A European Journal.Related Products of 1122-54-9 The information in the text is summarized as follows:
Homoleptic, 3D coordination polymers of the formula 33∞[Ln(3-PyPz)3] and 3∞[Ln(4-PyPz)3], (3-PyPz)- = 3-(3-pyridyl)pyrazolate anion, (4-PyPz)- = 3-(4-pyridyl)pyrazolate anion, both C8H6N3-, Ln = Sm, Eu, Gd, Tb, Dy, were obtained as highly luminescent frameworks by reaction of the lanthanide metals (Ln) with the aromatic heterocyclic amine ligands 3-PyPzH and 4-PyPzH. The compounds form 2 isotypic series of 3D coordination polymers and exhibit fair thermal stability up to 360°. The luminescence properties of all 10 compounds were determined in the solid state, with an antenna effect through ligand-metal energy transfer leading to high efficiency of the luminescence displayed by good quantum yields of up to 74%. The emission is mainly based on ion-specific lanthanide-dependent intra 4f-4f transitions for Tb3+: green, Dy3+: yellow, Sm3+: orange-red, Eu3+: red. For the Gd3+-containing compounds, the yellow emission of ligand triplet-based phosphorescence is observed at room temperature and 77 K. Codoping of the Gd-containing frameworks with Eu3+ and Tb3+ allow further shifting of the chromaticity towards white light emission. The experimental part of the paper was very detailed, including the reaction process of 4-Acetylpyridine(cas: 1122-54-9Related Products of 1122-54-9)
4-Acetylpyridine(cas: 1122-54-9) belongs to pyridine. Pyridine is a relatively complex molecule and exhibits a number of different bands in IR spectra. Among others, the bands characterizing the ν8a and ν19b modes have been found to be sensitive to the coordination or protonation of the molecule. Note that the band that is diagnostic for the PyH+ ion at about 1545 cm− 1 (ν19b mode) does not overlap with any of the other bands.Related Products of 1122-54-9