Rh3+ ions are first impregnated on Group 4 metal oxides (TiO2, ZrO2, HfO2) in aqueous solution and, then reduced with aqueous solution of NaBH4 to form rhodium(0) nanoparticles (NPs) on the oxide surface. The analyses reveal that Rh(0) NPs are highly dispersed on the surface of TiO2, ZrO2, HfO2....

The extraction of La(III), Nd(III), Sm(III), Tb(III) and Lu(III) with acetylacetone in benzene has been studied. The partition coefficients of these tris- (acetylacetonato) rare earth(III) chelates do not show the same value but increase as the atomic number of rare earth increases. From compari...

Quenching of the triplet states of nine different organic compounds by 1,3-diketonates of lanthanides was studied by laser flash photolysis in acetonitrile solution. Five different lanthanides were used, but terbium(III) and gadolinium(III) were investigated in detail. For comparison, two 1,3-di...

Some functional lanthanide metal complexes, such as acetylacetonato complexes, ethylenediaminetetraacetato complexes, were successfully applied for diagnostic technique. The authors are interested in investigating the structure and bonding in lanthanide and actinide metal complexes using 166Er, ...

The white complexes, [TaOCl3(OPPh3)2], [TaOCl3(L-L)] (L-L = 1,10-phenanthroline, 2,2′-bipyridyl, Ph2P(O)CH2P(O)Ph2, Ph2P(O)CH2CH2P(O)Ph2 and o-C6H4(P(O)Ph2)2), have been prepared from TaCl5, O(SiMe3)2 and the ligands in anhydrous CH2Cl2 solution. The corresponding yellow [TaSCl3(OPPh3)2] and [T...

The development of cyclometalated rhodium and iridium complexes from first- and second-generation naphthaldimine-based poly(propyleneimine) dendrimer scaffolds of the type, DAB-(NH2)n (where n = 4 or 8, DAB = diaminobutane) has been accomplished. Four metallodendrimers were synthesised, viz. (Cp...

A series of new phosphorescent heteroleptic Iridium(III) complexes with 2-phenylpyridine, acetylacetone and 2-picolinic acid as ancillary ligands have been designed and synthesized. The photophysical and electrochemical properties have been investigated experimentally and theoretically. The UV–...

In this paper, we report the synthesis and characterization of a new cyclometallated iridium complex, [tetrakis(2,2′-bipyridine-4,4′-dicarboxylic acid)(μ-dichloro)diiridium(III)] chloride complex, [(dcbpy)2Ir(μ-Cl)]2Cl4. Four different ionic liquids are also synthesized and characterized for...

Orange phosphorescent iridium(III) complexes, (DMBT)2Ir(acac) and (TBT)2Ir(acac), based on either 2-(3,4-dimethylphenyl)benzo[d]thiazole (DMBT) or 2-(4-(trimethylsilyl)phenyl)benzo[d]thiazole (TBT) as the cyclometalated main ligands and acetylacetone (acac) as an ancillary ligand, were synthesiz...

To improve the opto-physics, electroluminescence, and dispersibility of iridium (III) complexes in polymer light-emitting devices, we synthesized and characterized two red-emitting heteroleptic cyclometalated iridium (III) complexes of (Piq)2Ir(Tfl-pic) and (Piq)2Ir(Brfl-pic), in which Piq is 1-...

We herein report a series of charged iridium(III) complexes with a neutral bidentate ligand for blue phosphorescent emitter. A molecular design bearing a 2-(3,5-dimethyl-1H-pyrazol-1-yl)pyridine ligand proved suitable for efficient blue emission according to the comparison of photoluminescent pr...

We designed and synthesized a blue-green phosphorescent iridium(III) complex for solution-processed organic light-emitting diodes (OLEDs), (DMDPI)2Ir(tftap), that contains 1,2-dimethyl-4,5-diphenyl-1H-imidazole (DMDPI) as the main ligand and 2-(3-(trifluoromethyl)-1H-1,2,4-triazol-5-yl) pyridine...

We report the synthesis and characterization of three cyclometalated iridium(III) polypyridine complexes containing a 2,4-dinitrophenyl ether moiety [Ir(pq)2(N^N)](PF6) (Hpq = 2-phenylquinoline; N^N = 4-(N-(4-(2,4-dinitrophenoxy)benzyloxy)carbonyl)aminomethyl-4′-methyl-2,2′-bipyridine (bpy-din...

A new highly luminescent iridium complex, bis(2-phenylpyridine-N,C2′)[2-(2′-tosylaminophenyl)benzoxazole-N,N′]iridium(III) [Ir(ppy)2(TAPBO)] (TAPBO- 2-(2′-tosylaminophenyl)benzoxazole) has been synthesized and its molecular structure determined using single crystal X-ray diffraction analysis...

Highly efficient red phosphorescent iridium(III) complexes, (MPQ)2Ir(Pppy) and (MPQ)2Ir(TMSppy) based on 4-methyl-2-phenylquinoline (MPQ) as a cyclometalated main ligand and 2-[(1,1′-biphenyl)4-yl]pyridine (Pppy) or 2-[4-(trimethylsilyl)phenyl]pyridine (TMSppy) as a second cyclometalated ligand...

Aqueous aggregation kinetics of manganese oxides, the solid products formed during water treatment and subsurface remediation with permanganate, are crucial for its application. In this study, manganese oxides nanoparticles were in situ formed in a permanganate/(bi)sulfite system, which was foun...

Taking advantage of the active oxidants generated in the process of Mn(II)-catalyzed sulfite oxidation by oxygen, this study sought to enhance Mn(II) removal from water by activating oxygen with sulfite. The results revealed that Mn(II) can be effectively oxidized by oxygen to MnO2 with the addi...

Achieving a control over the growth of one-dimensional nanomaterial is significant for the study of energy storage material and device. In the present work, nickel tungstate (NiWO4) nanofiber was synthesized by electrospinning technique combined with subsequent annealing treatment. The obtained ...

Two scheelite-type rare-earth tungstates LiLn(WO4)2 (Ln = Sm, Eu) have been prepared using a high temperature molten salt method and structurally characterized by single crystal X-ray diffraction (SC-XRD) analyses. The structure features a three-dimensional (3D) network that is composed of two-d...

In order to enhance the storage performance and electrochemical reversibility of the Ni-rich LiNi0.8Co0.1Mn0.1O2 cathode material at high cut-off voltage (4.6 V), the surface coating layer of lithium tungstate (Li2WO4) is successfully prepared via a one-step synthesis way followed with a high te...