Synthesis and properties of iridium complexes based 1,3,4-oxadiazoles derivatives

Oxadiazoles

“…In the first step, IrCl 3 Á3H 2 O was allowed to react with an excess of 2,5-diaryl-1,3,4-oxadiazoles 985 in a 2-ethoxyethanol-water mixture. In the second step, the resulting iridium compounds were treated with sodium carbonate and acetyl acetone in 2-ethoxyethanol as solvent to afford the cyclometalated derivatives 986-988 in 70-85% yield (Scheme 13.304) [620].…”

Impact of substituents in the N∧N ligand on the emission wavelength of Cu(I) complexes: Insight from experimental and theoretical approach

“…So, we designed several new N 4 N ligands selecting 1,3,4-oxadiazol-2-yl group with a strong electron affinity instead of the benzimidazole moiety. The 1,3,4-oxadiazole moiety is thought to have good electron transporting ability and has been used for the synthesis of electron transporting materials [10], fluorescent materials [11], phosphorescent metal complexes [12][13][14] and ambipolar host materials [15] for optoelectronic devices. We presume that Cu complexes based on this series of N 4 N ligands would be more applicable in optoelectronic devices.…”

Complete 1H and 13C NMR signal assignments and chemical shift calculations of four 1,2,4-oxadiazole-based light-emitting liquid crystals

“…Currently, the use of such substances as organic light-emitting diodes (OLEDs) has been the focus of academic as well as industrial research groups, because OLEDs have certain advantages over liquid crystal display (LCD) technology [1,[6][7][8]. Among organic compounds, highly p-conjugated molecules containing electron-deficient heterocyclic rings have shown specific advantages due to their abilities in transporting electrons [1,[7][8][9][10][11][12][13][14][15][16].…”