Formula: C12H12N2In 2019 ,《Synthesis, structures and spectroscopy of three new lanthanide β-diketonate complexes with 4,4′-dimethyl-2,2′-bipyridine. Near-infrared electroluminescence of ytterbium(III) complex in OLED》 appeared in Inorganica Chimica Acta. The author of the article were Santos, Hudson P.; Gomes, Emmanuel S.; dos Santos, Moliria V.; D’Oliveira, Kaique A.; Cuin, Alexandre; Martins, Jefferson S.; Quirino, Welber G.; Marques, Lippy F.. The article conveys some information:
Three new lanthanide(III) β-diketonate complexes [Ln(btfa)3(4,4′-dmbpy)] (Ln = Yb(III), Gd(III) and Nd(III); btfa = anionic 4,4,4-trifluoro-1-phenyl-1,3-butanedione and 4,4′-dmbpy = 4,4′-dimethyl-2,2′-bipyridine) were synthesized and their characterization, including elemental anal., FTIR spectroscopy and thermal anal. (TG/DTA), is reported. The crystal description based on powder x-ray diffraction reveals that Gd(III) and Yb(III) compounds are isostructural and that lanthanide ion is eight-coordinated by oxygen and nitrogen atoms to give new tris- β-diketonates [Ln(btfa)3(4,4′-dmbpy)]. The cell parameters of Nd(III) complex are close to Gd(III) and Yb(III) ones. Phosphorescence data of Gd(III) complex shows that the triplet states (T1) of the ligands have higher energy than the emitting states of Yb(III) and Nd(III), indicating the possibility of intramol. energy transfer to these metal ions, which exhibit near-IR (NIR) emission. The authors used the Yb(III) complex as an emitting layer (EML) in a near IR organic light emitting diode (NIR-OLED) with the structure: CuPc(15 nm)/XD-03(40 nm)/Yb(60 nm)/BCP(15 nm)/Alq3(10 nm)/Al(120 nm). OLEDs exhibit both visible electroluminescence and a NIR electroluminescence at 980 nm from the 2F5/2 → 2F7/2 transition of the Yb(III). The experimental process involved the reaction of 4,4′-Dimethyl-2,2′-bipyridine(cas: 1134-35-6Formula: C12H12N2)
4,4′-Dimethyl-2,2′-bipyridine(cas: 1134-35-6) is used in the synthesis of a series of o-phenanthroline-substituted ruthenium(II) complexes.Formula: C12H12N2 Furthermore, 4,4′-Dimethyl-2,2′-bipyridine is used as a chemical Intermediate. It can be used for the determination of ferrous and cyanide compounds.