Barkanov, Artem published the artcileNIR-OLED structures based on lanthanide coordination compounds: synthesis and luminescent properties, SDS of cas: 1691-93-6, the main research area is lanthanide complex NIR OLED luminescence.
Electroluminescence complexes based on ytterbium and 5-methyl-2-phenyl-4-(2,2,2-trifluoroacetyl)-2,4-dihydro-3H-pyrazol-3-one (HL) ligand and various diimine-type ancillary ligands (2,2-bipyridine, bathophenanthroline, 1,10-phenanthroline) have been synthesized, and corresponding crystals were investigated. [Yb(L)3(bipy)] and [Yb(L)3(bath)] complexes have triclinic structure (P-1), while [Yb(L)3(phen)] complex has orthorhombic structure (P212121). The crystallog. parameters were determined The photoluminescence of the complexes demonstrated only bands resulted from 2F5/2→2F7/2 transition and corresponding three Stark subcomponents generated due to the crystal field action. NIR-OLED structures with emitting layers based on the [Yb(L)3(bipy)], [Yb(L)3(bath)], and [Yb(L)3(phen)] complexes have been fabricated, and their electroluminescence demonstrated maxima intensities at 978 and 1005 nm. Comparison of NIR-OLEDs power d. showed that the maximal power densities of 2.17 (978 nm) and 1.92 (1005 nm) μW x cm-2 were determined for the NIR-OLED based on [Yb(L)3(bath)] complex.
Journal of Materials Science published new progress about Crystal structure. 1691-93-6 belongs to class pyrazoles-derivatives, name is 5-Methyl-2-phenyl-4-(2,2,2-trifluoroacetyl)-1H-pyrazol-3(2H)-one, and the molecular formula is C12H9F3N2O2, SDS of cas: 1691-93-6.
Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics