Herein we report an improved self-assembling phosphorus ligand based on hydrogen bonding between pyridone/hydroxypyridine in the backbone. The N-pyrrolyl substituents significantly improve π-backbonding properties of ligand. Rhodium, iridium and platinum complexes were prepared analyzed by NMR spectroscopy x-ray crystal structure analysis. A catalyst this showed very high catalytic activity lin...

DFT calculations were used to reveal the unexpected reactivity and mechanism of the addition of acetone to metallabenzene, metallapyrylium and metallathiabenzene complexes of iridium.

WO3, an abundant transition metal semiconductor, is one of the most discussed materials to be used as a photoanode in photoelectrochemical water-splitting devices. The properties, such photoactivity and selectivity WO3 different electrolytes, are already well understood. However, understanding stability, important properties for utilization commercial device, still early stages. In this work, s...

Oxygen evolution reaction (OER), as the primary anodic reaction, plays a critical role in many electrochemical energy conversion processes. As state-of-the-art OER catalysts, iridium-based materials are largely hindered from practical applications mainly due to extreme scarcity of iridium. Here we demonstrate successful fabrication boron-doped amorphous iridium oxide (IrOx-B) via facile boric a...

Iridium(NHC)-catalyzed transfer hydrogenation (TH) of CO2 and inorganic carbonates with glycerol were conducted, demonstrating excellent turnover numbers (TONs) frequencies (TOFs) for the formation formate lactate. Regardless carbon sources, TOFs observed (CO2: 10,000 h?1 K2CO3: 10,150 h?1). Iridium catalysts modified triscarbene ligand showed catalytic activity at 200 °C are a suitable choice ...

very smooth thin films of iridium have been deposited on super polished fused silica (sio2) substrates using dc magnetron sputtering in argon plasma. the influence of deposition process parameters on film micro roughness has been investigated. in addition, film optical constants have been determined using variable angle spectroscopic ellipsometery, over the spectra range from vacuum ultraviolet...

Key words iridium catalysis - enantioselectivity diastereoselectivity 3-substituted prolines photoredox reaction

In this Letter we report on the use of ultrashort infrared laser pulses to generate a copious amount of electrons by a copper cathode in an rf photoinjector. The charge yield verifies the generalized Fowler-Dubridge theory for multiphoton photoemission. The emission is verified to be prompt using a two pulse autocorrelation technique. The thermal emittance associated with the excess kinetic ene...

Low cost and high performance white polymer light-emitting diodes (PLEDs) are very important as solid-state lighting sources. In this research three commercially available phosphors were carefully chosen, bis[2-(4,6-difluorophenyl)pyridinato-N,C(2)](picolinate)iridium(III) (FIrpic), bis[2-(2-pyridinyl-N)phenyl-C](2,4-pentanedionato-O(2),O(4))iridium(III) [Ir(ppy)2(acac)], and bis(2-phenyl-benzo...

Iridium complexes [(CO)2Ir(NHC-R)Cl] (R = Et-, 3a; PhCH2-, 3b; CH3OCH2CH2-, 3c; o-CH3OC6H4CH2-, 3d; NHC: N-heterocyclic carbene) are prepared via the carbene transfer from [(NHC-R)W(CO)5] to [Ir(COD)Cl]2. By using substitution with 13CO, we are able to estimate the activation energy (G) of the CO-exchange in 3a-d, which are in the range of 12-13 kcal mol-1, significantly higher than those for t...