scholarly journals In situ synthesis of lanthanide complexes supported by a ferrocene diamide ligand: extension to redox-active lanthanide ions

2015 ◽  
Vol 39 (10) ◽  
pp. 7696-7702 ◽  
Author(s):  
Wenliang Huang ◽  
Jonathan L. Brosmer ◽  
Paula L. Diaconescu
Keyword(s):  
Rare Earth ◽  
Lanthanide Complexes ◽  
In Situ Synthesis ◽  
Lanthanide Ions ◽  
Redox Active

The scope of an in situ method to prepare rare-earth alkyl and halide precursors was extended to cerium, praseodymium, samarium, terbium, thulium, and ytterbium.

LaF3 Influences on Wear Resistance of TiC/Ni Cladding Layer by Laser Cladding In Situ Fabricated

2012 ◽  
Vol 549 ◽  
pp. 335-339 ◽  
Author(s):  
Cheng Qiang Wang ◽  
Li Juan Wang ◽  
Jiang Qiao Wu ◽  
Zi Zhen Chen ◽  
Yong Jun Niu
Keyword(s):  
Wear Resistance ◽  
Rare Earth ◽  
Laser Cladding ◽  
Friction And Wear ◽  
In Situ Synthesis ◽  
Particle Segregation ◽  
Cladding Layer ◽  
Tic Particle ◽  
Heterogeneous Phase

The TiC/Ni composite coating was prepared by Laser Cladding In-situ Synthesis on the surface of damper plate with Ni--Ti-Mo-C -LaF3 powder．Microstructure and Wear resistance have been studied throughout EPMA、SEM and M—2000 Friction and Wear Tester．It was found that the microstructure got more homogenized grain fineness became finer, TiC distributed better and heterogeneous phase decreased, as adding moderate rare earth LaF3. When the content of LaF3 was 1%, the highest microhardness was got. While the optimal wear resistance properties were obtained with 2% LaF3. The laser cladding with excessive LaF3 has more TiC particle segregation which induces hardness and wear resistance of cladding layer.

scholarly journals HOCl Responsive Lanthanide Complexes Using Hydroquinone Caging Units

Molecules ◽  
2020 ◽  
Vol 25 (8) ◽  
pp. 1959
Author(s):  
Elena Del Giorgio ◽  
Thomas Just Sørensen
Keyword(s):  
Lanthanide Complexes ◽  
Design Principle ◽  
Hypochlorous Acid ◽  
Molecular Probes ◽  
Lanthanide Ions ◽  
Redox Biology ◽  
Redox Active ◽  
Trivalent Lanthanide ◽  
Sustained Effort ◽  
Triton X

Redox biology is still looking for tools to monitor redox potential in cellular biology and, despite a large and sustained effort, reliable molecular probes have yet to emerge. In contrast, molecular probes for reactive oxygen and nitrogen have been widely explored. In this manuscript, three kinetically inert lanthanide complexes that selectively react with hypochlorous acid are prepared and characterized. The design is based on 1,4,7,10-tetraazacyclododecane-1,4,7-triacetic acid (DO3A) and 1,4,7,10-tetraazacyclododecane-1,7-diacetic acid (DO2A) ligands appended with one or two redox active hydroquinone derived arms, thereby forming octadentate ligands ideally suited to complex trivalent lanthanide ions. The three complexes are found to react selectively with hypochlorous acid to form highly symmetric lanthanide(III) 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacedic acid (DOTA) complexes. The conversion of the probe to [Ln.DOTA]− is followed by luminescence, absorption, and NMR spectroscopy in a model system comprised of a Triton-X modified HEPES buffer. It was concluded that the design principle works, and that simple caging units like hydroquinones can work well in conjugation with lanthanide(III) complexes.

In Situ Synthesis of Hybrid-Reinforced Titanium Matrix Composites

2007 ◽  
Vol 127 ◽  
pp. 155-160
Author(s):  
Di Zhang ◽  
Zhi Feng Yang ◽  
Wei Jie Lu ◽  
Dong Xu
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Rare Earth ◽  
In Situ Synthesis ◽  
Matrix Composites ◽  
Titanium Matrix ◽  
Titanium Matrix Composites ◽  
Transmission Electron ◽  
Scanning Electron

Novel hybrid TiB, TiC and rare earth oxide (Re2O3) reinforced titanium matrix composites were in situ synthesized utilizing the reaction between Ti, B4C (or C), rare earth (Re) and B2O3 through homogeneously melting in a non-consumable vacuum arc remelting furnace. In this work, Nd and Y were chosen as rare earth (Re) added in the in situ reaction. The thermodynamics of in situ synthesis reaction was studied. The results of X-ray diffraction (XRD) proved that no other phases appeared except for TiB, TiC and Re2O3. The microstructures of the composites were examined by scanning electron microscope (SEM) and backscattered scanning electron microscope (SEM). The results showed that there were mainly three kinds of reinforcements: TiB whiskers, TiC particles and Re2O3 particles. The reinforcements were fine and were homogeneously distributed in the matrix. The interfaces of TiB-TiC and Nd2O3-Ti were examined by high-resolution transmission electron microscopy (HREM).Transmission electron microscopy (TEM) and selected area diffraction (SAD) were used to analyze the orientation relationships of TiB-TiC and Nd2O3-Ti. The orientation relationship between TiB and TiC can be described as: [001] TiB //[001] TiC , (010) TiB //(110) TiC . The orientation relationship of Nd2O3 and α-Ti can be described as: [110] Nd2O3 //[ 1213 ] Ti , (111) Nd2O3 //(1101) Ti , ( 001) Nd2O3 //( 2110 ) Ti .

scholarly journals In situ Synthesis of Pt-rare Earth Alloy Nanoparticles

2021 ◽  
Vol 27 (S2) ◽  
pp. 97-98
Author(s):  
Pei Liu ◽  
Yang Hu ◽  
Thomas Willum Hansen
Keyword(s):  
Rare Earth ◽  
In Situ Synthesis ◽  
Alloy Nanoparticles ◽  
Rare Earth Alloy

Hybrid lanthanide complexes based on a novel β-diketone functionalized polyhedral oligomeric silsesquioxane (POSS) and their nanocomposites with PMMA via in situ polymerization

RSC Advances ◽  
2014 ◽  
Vol 4 (74) ◽  
pp. 39132-39139 ◽  
Author(s):  
Liguo Li ◽  
Shengyu Feng ◽  
Hongzhi Liu
Keyword(s):  
Lanthanide Complexes ◽  
In Situ Polymerization ◽  
Polyhedral Oligomeric Silsesquioxane ◽  
Lanthanide Ions ◽  
Luminescent Materials ◽  
Oligomeric Silsesquioxane

β-diketone-functionalized POSS dendrimer acted as a ligand to coordinate with lanthanide ions (Eu3+ and Tb3+) to form hybrid luminescent materials.

Hydrothermal In Situ Synthesis ZnO Nanoarrays and Their Photocatalytic Applications

2013 ◽  
Vol 30 (6) ◽  
pp. 667
Author(s):  
Zhenzhen WANG ◽  
Fangfang LI ◽  
Han GUO ◽  
Jiuju FENG ◽  
Aijun WANG
Keyword(s):  
In Situ Synthesis ◽  
Photocatalytic Applications
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