Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Individual monolayers of metal dichalcogenides are atomically thin two-dimensional crystals with attractive physical properties different from those of their bulk counterparts. Here we describe the direct synthesis of WS2 monolayers with triangular morphologies and strong room-temperature photoluminescence (PL). The R…
A Comment on the Letter by F. Masia, et al., Phys. Rev. Lett. 108 087401 (2012). The authors of the Letter offer a Reply.
Abstract Polyaniline (PANI) nanofibers were prepared via the reaction of aniline with ammonium persulfate carried out in ethylene glycol (EG) medium without water. These purified PANI nanofibers could be dispersed in water and other polar solvents, such as ethanol, EG, and N , N ‐dimethylformamide, to form colloids. T…
The corrosion inhibition characteristics of N-[(Z)-1-phenylemethyleidene]-N-{2-[(2-{[(Z)-1phenylmethylidene]amino}phenyl)disulfanyl]phenyl} amine and N-[(Z)-1-(4-methylphenyl)methylidene]-N-{2-[(2-{[(Z)-1-(4methylphenyl)methylidene]amino}phenyl)disulfanyl]phenyl}amine on copper in HCl 15% solution was investigated usi…
Silver thiolate is a layered compound with a Raman spectrum that is known to change with time, becoming the same as the surface‐enhanced Raman scattering (SERS) spectrum of the parent thiol molecule adsorbed on Ag nanoparticles. On this basis, the Raman scattering characteristics of silver 4‐aminobenzenethiolate (Ag‐4…
Hexapyrrol-α,ω-dialdehyd mit acht Donoratomen lieferte ein Dipalladium(II)-Einzelhelicat (Pd rosa, O rot, N blau). Ein schneller Wechsel zwischen den beiden Helixrichtungen wurde durch Iminbildung an den endständigen Aldehydeinheiten mit (R)-(−)-1-Cyclohexylethylamin verlangsamt, was die P-helicale Schraube in enormem…
This work deals with phosphors suitable for applications in a new generation of Hg-free lamps based on deep ultraviolet (DUV), ultraviolet (UV) and blue light emitting diodes (LEDs). First, two synthesis routes, solid state reaction and Pechini method, have been used for preparing an original red phosphor, Y 3 BO 6 :E…
Reliability of the numerical simulation results strongly depends on the input data, in particular on the thermo-physical properties of the furnace components, e.g. graphite thermal conductivity and steel surface emissivity. Uncertainties are always involved in the measurement of these parameters. A set of global 2D si…
We theoretically designed and investigated the layered antiperovskite nickel carbides A2CNi4 with different A-site elements by using the first-principles calculation based on density functional theory (DFT). The calculated formation energies for a series of A-site elements show that Al2CNi4, Ga2CNi4, and Sn2CNi4 are s…
The axially chiral mesogens 5-alkoxy-5′-[(4-alkoxybenzoyl)oxy]-2,2′-spirobiindan-1,1′-dione (QL7-n) were synthesised as racemic mixtures and resolved as single enantiomers by preparative chiral phase HPLC. The shorter homologues (R)-QL7-8 and QL7-9 form enantiotropic N* and SmC* phases, whereas the longer homologues (…
Alles hängt an Ru: Die Gelenk-artige Flexibilität der Ruthenocengruppe spielt eine entscheidende Rolle für die Aromatizität des gezeigten Ruthenocenoporphyrinoids: Dessen synperiplanare Konformation ist aromatisch, während die antiklinale (ekliptische) Konformation antiaromatisch ist (siehe Bild).
A new modelling-aided approach for the atomistic model of single walled carbon nanohorn (SWNH) creation is presented, based on experimental evidence, on realistic potential of carbon-carbon interactions and on molecular simulations. A new model of SWNHs is next used to predict Ar adsorption properties and to check the…
Fourier transform ion cyclotron resonance mass spectrometry was used to characterize the gas-phase reactivity of Hf dipositive ions, Hf(2+)and HfO(2+), toward several oxidants: thermodynamically facile O-atom donor N(2)O, ineffective donor CO, and intermediate donors O(2), CO(2), NO, and CH(2)O. The Hf(2+) ion exhibit…
Sont considérés dans cette étude, l’impact des rejets polluants d’origines urbaine et industrielle sur la qualité des eaux du Mfoundi, l’abondance, la richesse spécifique et la structure des communautés diatomiques qui peuplent ce cours d’eau. Le calcul du pourcentage de taxons tolérants à la pollution organique a per…
It is well known that transport in lightly n-doped SrTiO(3) involves light and heavy electron bands. We have found that upon application of moderate quasi-isotropic pressures, the relative positions of these subbands are changed by a few meV and, eventually, a band inversion occurs at ~1 kbar. Such effects are, howeve…
Resonant soft x-ray absorption measurements at the O $K$ edge on a ${\mathrm{SrMnO}}_{3}\text{/}{\mathrm{LaMnO}}_{3}$ superlattice show a shoulder at the energy of doped holes, which corresponds to the main peak of resonant scattering from the modulation in the doped hole density. Scattering line shape at the Mn ${L}_…
Abstract The structure and the thermodegradation behavior of both poly(methyl methacrylate)‐ co ‐poly(3‐tri(methoxysilyil)propyl methacrylate) polymer modified with silyl groups and of intercalated poly(methyl methacrylate)‐ co ‐poly(3‐tri(methoxysilyil)propyl methacrylate)/Cloisite 15A™ nanocomposite have been in sit…
The structural, magnetic, and thermophysical properties of cation-substituted sulfides Gd(X)Mn(1-X)S (0.04 ≤ X ≤ 0.25) with the NaCl-type face-centered cubic lattice have been investigated. The range of existence of long-range antiferromagnetic order has been established. The anomalies observed in the temperature depe…
The synthetic efforts that yielded the first stable [4]circulene, 1,8,9,16-tetrakis(trimethylsilyl)tetra-cata-tetrabenzoquadrannulene (TMS(4)-TBQ, 1), are reported. The synthesis and characterization of different intermediates are described. The cyclotrimerization of the key precursor tetraalkyne was explored using Rh…
Toxicarioside A is a cardenolide isolated mainly from plants and animals. Emerging evidence demonstrate that cardenolides not only have cardiac effects but also anticancer effects. In this study, we used in vivo models to investigate the antitumor activities of toxicarioside A and the potential mechanisms behind them.…