Cerium(iii) complexes with azolyl-substituted thiophenolate ligands: synthesis, structure and red luminescence

Abstract

Novel Ce(iii) complexes with azolyl-substituted thiolate ligands have been synthesized. Some of them exhibit red PL.

Synthesis and photophysical properties of rare earth (La, Nd, Gd, Y, Ho) complexes with silanediamido ligands bearing a chelating phenylbenzothiazole chromophore

“…Substituted 2-phenyl-benzothiazoles have been widely explored in the chemistry of transition metals and as OLEDs themselves, followed by the studies of lanthanide complexes. [29][30][31][32][33][34] This chromophore group provides a necessary absorption to the complex, and efficiently transfers the excitation to the lanthanide, owing to the bidentate coordination by heteroatoms. The triplet level energy of the protonated Pbt-derivatives was recently determined 31 to be around 20 Â 10 3 cm À1 ; upon deprotonation, the triplet level energy is noticeably decreased and becomes closer to the excited levels of NIR-emitting lanthanides.…”

Lanthanide complexes with a new luminescent iminophosphonamide ligand bearing phenylbenzothiazole substituents

“…The latter is supported by our previous experience with silanediamide complexes 50,62 and the photophysical properties of phenyl-benzothiazole-based compounds, emitting at the same region. [35][36][37][63][64][65] Luminescence decay curves have a complicated three-exponential character, indicating multiple routes of energy dissipation (Table 2 and Fig. S13 †).…”

Doublet-emissive materials for organic light-emitting diodes: exciton formation and emission processes

“…As demonstrated in most literature reports, Ce 3+ complexes emit in the blue or ultraviolet region owing to the inherent large energy gap between the 4f and 5d orbitals, and only a few complexes can emit at longer wavelengths. 65 Transition-metal complexes with a low-spin d 5…”