Related Products of 676525-77-2. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: [Ir(dtbbpy)(ppy)2]PF6, is researched, Molecular C40H40F6IrN4P, CAS is 676525-77-2, about Degradation of Ir(ppy)2(dtb-bpy)PF6 iTMC OLEDs. Author is Goldberg, Velda; Kaplan, Michael D.; Soltzberg, Leonard; Armira, Dolly; Bigelow, Megan; Bitzas, Stephanie; Brady, Rachel; Browne, Shannon; Dichiaro, Bianca; Foley, Heather; Hutchinson, Lauren; Inglis, Alison; Kawamoto, Nicole; McLaughlin, Amanda; Millett, Caitlin; Nasri, Hanah; Newsky, Sarah; Pham, Tram; Saikin, Cassandra; Scharpf, Mary; Trieu, Melissa; Malliaras, George G.; Bernhard, Stefan.
Simplicity of construction and operation are advantages of iTMC (ionic transition metal complex) OLEDs (organic light emitting diodes) compared with multi-layer OLED devices. Lifetimes do not compare favorably with the best multi-layer devices. It was previously shown for Ru(bpy)3(PF6)2 based iTMC OLEDs that elec. drive produces emission-quenching dimers of the active species. Evidence is reported that a chem. process may be implicated in degradation of devices based on Ir(ppy)2(dtb-bpy)PF6 albeit by a different mechanism. Apparently degradation of operating devices made with this Ir-based complex is related to current-induced heating of the organic layer, resulting in loss of the dtb-bpy ligand. (The dtb-bpy ligand is labile compared with the cyclometallated ppy ligands.). Morphol. changes observed in elec. driven Ir(ppy)2(dtb-bpy)PF6 OLEDs provide evidence of substantial heating during device operation. Evidence from UV-visible spectra in the presence of an elec. field as well as MALDI-TOF mass spectra of the OLED materials before and after elec. drive add support for this model of the degradation process.
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Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”