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Two new tfmpiq-based bis-cyclometalated iridium(III) complexes, [(tfmpiq) 2 Ir(imdzppo)] ( 2a ) and [(tfmpiq) 2 Ir(idzpo)] ( 2b ) (where tfmpiq = 1-(4-(trifluoromethyl)phenyl)isoquinoline, imdzppo = 2-(imidazo[1,2-a]pyridin-2-yl)phenol, idzpo = 2-(2 H -indazol-2-yl)phenol), have been synthesized and fully characterized. The single crystal structure of 2b has been determined. The relationship between the structures and photophysical properties of both complexes are considered, and the DFT calculations have been used to further support the deduction. These Ir(III) complexes emit red light with quantum yields of 39.9–51.9% in degassed CH 2 Cl 2 solution at room temperature. Also, their emission originates from a hybrid 3 MLCT/ 3 LLCT/ 3 LC excited state. All these results show that iridium(III) complexes 2a - 2b are suitable for red-phosphorescent materials in OLEDs.

Nine new phosphorus-coordinated iridium(III) complexes of the form [Ir(C∧N)2(P∧P)]PF6, [Ir(F-piq)2(xantphos)]PF6 (1), [Ir(F-piq)2(binap)]PF6 (2), [Ir(F-piq)2(dppp)]PF6 (3), [Ir(Me-piq)2(xantphos)]PF6 (4), [Ir(Me-piq)2(binap)]PF6 (5), [Ir(Me-piq)2(dppp)]PF6 (6), [Ir(CF3O-piq)2(xantphos)]PF6 (7), [Ir(CF3O-piq)2(binap)]PF6 (8), and [Ir(CF3O-piq)2(dppp)]PF6 (9) (F-piq = 1-(4-fluorophenyl)isoquinoline, Me-piq = 1-(p-tolyl)isoquinoline, CF3O-piq = 1-(4-(trifluoromethoxy)phenyl)isoquinoline, xantphos = 9,9-dimethyl-4,5-bis(diphenylphosphino)xanthene, binap = 2,2′-bis(diphenylphosphino)-1,1′-binaphthyl, dppp = 1,3-bis(diphenylphosphanyl)propane), have been synthesized and fully characterized. The crystal structures of 1, 7, and 9 have been determined by X-ray analysis. The most representative molecular orbital energy-level diagrams and the lowest energy electronic transitions of 1–9 have been calculated with density functional theory (DFT) and time-dependent DFT (TD-DFT). All of the complexes are orange-red emiss...

Four new sesquiterpenoids, 4,8-dioxo-6 β -hydroxyl-7 β ,11-epoxycarabrane ( 1 ), 4,8-dioxo-6 β -hydroxyl-7 α ,11-epoxycarabrane ( 2 ), wenyujinins Q and R ( 3–4 ), and nine known sesquiterpenoids ( 5–13 ) were isolated from the Curcuma wenyujin ( C. wenyujin ) dreg. Their structures and relative configurations were elucidated using 1D, 2D NMR, and HR-ESI-MS data. All the compounds were isolated for the first time from the C. wenyujin dreg and evaluated for their antibacterial and antifungal activities. Compounds 3 , 5 – 8 exhibited strong broad-spectrum antifungal activities against tested nine pathogenic fungi.