Materials Literature
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Recent transport experiments have demonstrated that rhombohedral-stacking trilayer graphene is an insulator with an intrinsic gap of 6 meV and Bernal-stacking trilayer graphene is a metal. We propose a Hubbard model with a moderate $U$ for layered graphene sheets, and show that the model well explains the experiments…
Platinum-catalyzed hydrosilylation of hydrogen-terminated silicon nanoparticles (Si NPs) with 2,2,2-trifluoroethyl 4-pentenoate gave well-defined nanoparticles (NPs) with surface groups that are reactive toward amines. The particles showed a diameter of 1.4 ± 0.2 nm as revealed by transmission electron microscopy (TEM…
Graphene's peculiar electronic band structure makes it of interest for new electronic and spintronic approaches. However, potential applications suffer from quantization effects when the spatial extension reaches the nanoscale. We show by photoelectron spectroscopy on nanoscaled model systems (disc-shaped, planar poly…
The atomic layer deposition of gallium doped zinc oxide films is investigated as a method of fabricating transparent conducting oxide substrates for cadmium telluride based photovoltaic cells. The growth parameters and properties of gallium-doped ZnO were established for a range of dopant concentrations. 1 at. % galli…
Rattle-structured nanomaterials composed of a gold nanorod in a mesoporous silica nanocapsule (AuNR@mSiO(2)) were prepared by a novel solution-based consecutive process. The drug-loading properties of the nanomaterial and regrowth control of the core nanoparticles were also studied.
The inhibition of corrosion of mild steel in 1M HCl and H2SO4 acid solutions by Ervatamia coronaria has been evaluated by a weight loss method. The results indicate that the plant extract possesses a significant anticorrosion effect. Ervatinine, the alkaloid present in the leaves of the plant has been isolated and its…
A divergent approach was used for the synthesis of dendritic structures based on a cyclotriphosphazene core with 12 or 24 hydroxyl groups, by starting from [N(3)P(3)(OC(6)H(4)OH-4)(6)] and using an acetal-protected 2,2-di(hydroxymethyl)propionic anhydride as the acylating agent. Hydroxyl groups in these first- and sec…
The study of brain structure and connectivity using diffusion magnetic resonance imaging (dMRI) has recently gained substantial interest. However, the use of dMRI still faces major challenges because of the lack of standard materials for validation. The present work reports on brain tissue-mimetic materials composed o…
Der Gast hat das Sagen: Eine neue Strategie für die Einstellung von Spin-Crossover(SCO)-Eigenschaften wird vorgeschlagen, die auf einem aktiven molekularen Gast beruht. Um das Konzept zu veranschaulichen, wurde Maleinanhydrid in das mikroporöse Gerüstmaterial {Fe(Pyrazin)[Pt(CN)4]} eingebracht; die chemische Umwandlun…
Solubility of NaI in water, methanol, ethanol, propan-2-ol, and also in water + methanol, water + ethanol, and water + propan-2-ol binary mixtures have been experimentally measured using a gravimetric method at temperatures (298.15.303.15, 308.15, and 313.15) K. The combined NIBS (nearly ideal binary solvent)–Redlic–K…
The nanoparticle industry is expected to become a trillion dollar business in the near future. Therefore, the unintentional introduction of nanoparticles into the environment is increasingly likely. However, currently applied risk-assessment practices require further adaptation to accommodate the intrinsic nature of e…
BaCe0.85-xZrxSm0.15O3-δ (0.01 < x < 0.3) (BCZS): Effect of Zr Content in BCZS on Chemical Stability in CO2 and H2O Vapor, and Proton Conductivity, Kannan, Ramaiyan, Gill, Sukhdeep, Maffei, Nicola, Thangadurai, Venkataraman
Novel phthalimide and o-sulfobenzimide-functionalized silsesquioxanes were successfully synthesized via nucleophilic substitution reactions from octakis(3-chloropropyl)octasilsesquioxane. Surprisingly, the formation of deca- and dodecasilsesquioxanes cages was discovered during substitution with phthalimide, but only…
Graphene being a zero band gap material hinders the use of its intrinsic form for many applications requiring a moderate band gap, such as field effect transistors and optoelectronic devices. Here we demonstrate a scalable method based on chemical vapor deposition for the direct growth of well-registered graphene nano…
A unique compressed octahedral {Cr(III)(2)Dy(III)(4)} aggregate is the first sulfate-based single-molecule magnet (SMM) with U(eff)/k(B) = 39.7 K and τ(0) = 2.9 × 10(-9) s. Its synthesis opens a new avenue to prepare 3d-4f coordination clusters.
PURPOSE: Implantable-grade polyetheretherketone (PEEK-OPTIMA®) is a high-performance thermoplastic that has been used in implant devices such as spinal-fusion cages since its introduction in 1999. Here, a new porous PEEK version was investigated. METHODS: Porous PEEK was fabricated using industrial scale relevant meth…
In order to prevent the inert alumina film from forming on the surface of Al metal particles, Li is added into Al to form Al–Li alloy. It can improve the reactivity of Al with water. The prepared Al–Li alloy can rapidly split water to produce hydrogen. With increasing Li content of alloy, the hydrogen generation rate…
A new symmetrical tricyanide building block mer-[Fe(bbp)(CN)3](2-) [1; bbp = bis(2-benzimidazolyl)pyridine dianion] has been prepared and structurally and magnetically characterized. It forms a new low-spin meridionally capped {Fe(III)L(CN)3} fragment with the tridentate bbp ligand. The reaction of 1 with Ni(II) salts…
In this work, Polylactide/Biopolyethylene blends were developed. Although some studies have been carried out on polylactide/polyethylene blends, none of them has used polyethylene synthesized with raw material obtained from natural sources. Due to the incompatibility between polylactide and polyethylene, E-GMA and EMA…
The adsorption of CO on reduced, rutile TiO2(110) is investigated using IR reflection-absorption spectroscopy and temperature-programmed desorption. Experiments using s- and p-polarized IR light incident along the [001] and [11̅0] azimuths give detailed information on the adsorption geometry of the CO as a function of…