Materials Literature
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Two new macrocyclic DOTA-like chelates containing one phosphonate pendant arm were synthesised as potential contrast agents for MRI (magnetic resonance imaging). The chelates bind to the lanthanide(III) in an octadentate manner, via four nitrogen atoms, three carboxylate and one phosphonate oxygen atoms. Solution stru…
Three Mn2Ni chains having the same repeating motif, [–MnIII–ON–NiII–NO–MnIII–(OPh)2–]n, possessing a structural C2 axis on the NiII ion and an inversion center at the midpoint of MnIII–(OPh)2–MnIII have been synthesized: [Mn2(saltmen)2Ni(L)2(py)2](A)2 (saltmen2− = N,N′–(1,1,2,2-tetramethylethylene)bis(salicylideneimin…
Manganese dioxide has been considered as a promising material for electrochemical supercapacitors. In order to obtain a high specific capacitance, has been electrodeposited from an aqueous solution of consisting of a neutral surfactant, namely, Triton X-100. The electrodeposited films of in the presence of the surfact…
Luminescence, energy transfer, and upconversion mechanisms of nanophosphors (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="E7"><mml:mrow><mml:msub><mml:mtext>Y</mml:mtext><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mtext>O</mml:mtext><mml:mn>3</mml:mn></mml:msub><mml:msup><mml:mrow><mml:mtext> </mml:mte…
The chemical structure of an amorphous slag with blast furnace composition was investigated by means of molecular dynamics simulation. Our calculation suggested that the slag had a depolymerized network of SiO4 and AlO4 tetrahedra with interstitial cations, Ca2+ and Mg2+. The structural properties such as average coor…
The mechanical response of particle-laden fluid interfaces is determined by measuring the internal pressures of particle-coated drops as a function of the drop volume. The particle monolayers undergoing compression-expansion cycles exhibit three distinct states: fluid state, jammed state, and buckled state. The P-V cu…
A series of pentamethylcyclopentadienyl bis(phosphinimino)methanide complexes of yttrium and the lanthanides, [{CH(PPh 2 NSiMe 3 ) 2 }Ln(η 5 -C 5 Me 5 )Cl] (Ln = Y ( 1a ), Sm ( 1b ), Yb ( 1c )), were prepared by two different synthetic approaches. The compounds can be obtained either from [{CH(PPh 2 NSiMe 3 ) 2 }LnCl…
The electrocatalytic reduction of oxygen has been studied on multiwalled carbon nanotube (MWCNT) modified glassy carbon (GC) electrodes in solution using the rotating disk electrode technique. The oxygen reduction behavior of oxidatively pretreated and untreated MWCNT modified GC electrodes was compared. The results o…
In this paper the description of the dielectric and ferroelectric properties of BaTiO3 single crystals using the Landau phenomenological thermodynamic potential was addressed. Our results suggest that when using the sixth-power free energy expansion of the thermodynamic potential, remarkably different values of the fo…
We demonstrated a highly efficient, polarization-independent and electrically tunable Fresnel lens based on dye-doped liquid crystal using double-side photoalignment technique. The maximum diffraction efficiency reaches 37%, which approaches the theoretical limit ~41%. Such a lens functions as a half-wave plate, and t…
Novel tree-like alumina nanopores were reproducibly obtained in non-steady-state anodization conditions by exponential decrease of anodization potential. The mechanism of pore formation was thought to be due to a combination of electrical treeing and mechanic stress in the growth process. Furthermore, some interesting…
Some tetra-alkylpyridinium octamolybdate catalysts were found to be recyclable and efficient for selective oxidation of benzyl alcohol with aqueous hydrogen peroxide as oxidant under simple reaction conditions. Organic solvent-free direct selective oxidation of benzyl alcohol to benzaldehyde with aqueous 15% hydrogen…
The extracellular matrix (ECM) provides a natural network of intricate nanofibres that supports cells and presents a multidimensional map that guides cellular behaviour. Three dimensional nanofibre constructs offer the ability to mimic the topographical environment of the ECM. Here we synthesise nanostructured constru…
The complex [Mn(6)O(2)(Et-sao)(6)(O(2)C(11)H(15))(2)(EtOH)(6)] has U(eff) = 80 K.
Many potential applications in nanotechnology envisage the use of better-dispersed and functionalized preparations of carbon nanotubes. Single-walled carbon nanotubes (SWCNTs) were treated with 1:1 mixtures of concentrated nitric and sulfuric acids for 3 min in a microwave oven under 20 psi pressure followed by extens…
Crystal orientation-ordered ZnS nanobelt quasi-arrays were fabricated using a non-catalytic and template-free thermal evaporation process; field-emission measurements show that these novel arrays are decent field emitters possessing a current density more than 20 times higher than that of randomly-oriented ZnS nanobel…
A new green phosphor, -activated , was developed, which shows green luminescence with a peak wavelength of under excitation with blue light. -activated can be used as a material for color conversion of white-light-emitting diodes (LEDs), which consist of a blue LED, a green phosphor, and a red phosphor, because the lu…
Abstract Results of the comprehensive experimental and computational phase studies of the systems ZrO 2 -REO 1.5 (RE = La, Nd, Sm, Gd, Dy, Yb) are summarized. Various experimental techniques, X-ray diffraction (XRD), scanning electron microscopy (SEM), electron probe microanalysis (EPMA), transmission electron microsc…
Thermal and dynamic mechanical properties of kenaf natural fiber reinforced polypropylene (PP) biocomposites were examined to compare the effects of natural fiber treatment by electron beam irradiation (EBI) and alkalization. The alpha cellulose contents, the functional groups on the surfaces and the thermal stability…
The ability of gold(I) thiolates to self-assemble into polymeric species has been exploited to create a pH responsive supramolecular hydrogel based on glutathione.