Materials Literature
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We present Raman spectroscopy measurements on single- and few-layer graphene flakes. Using a scanning confocal approach we collect spectral data with spatial resolution, which allows us to directly compare Raman images with scanning force micrographs. Single-layer graphene can be distinguished from double- and few-lay…
Doubly and triply bridged 9,10-bis(1,3-dithiol-2-ylidene)-9,10-dihydroanthracene (ex-TTF) derivatives have been synthesized. Key steps are the generation and macrocyclization reactions of ex-TTF-dithiolate reagents. The X-ray crystal structures of the doubly bridged cyclophanes 15 and 16 and the triply bridged system…
In this work, a technique based on optical heating and electrical thermal sensing (OHETS) is developed to characterize the thermophysical properties of one-dimensional micro/nanoscale conductive and non-conductive wires. In this method, the to-be-measured thin wire is suspended over two electrodes and is irradiated wi…
Self-assembled synthesis of three new organic/inorganic hybrid solids ( 1 − 3 ) in the presence of isomeric phenylenediammonium ions ( p -, m -, and o -) demonstrates the role of nonbonding interactions in the construction of phosphomolybdate-based solid-state assemblies. In 1, crystal packing is dominated by two kind…
We report the preparation of loosely packed hydroxyl-terminated self-assembled monolayers (SAMs) on gold by the adsorption of bis(11,11'-dithioundecyl)perfluoroheptanoate and base-mediated cleavage of the fluorocarbon terminal group. As shown through complementary characterization methods, the partially fluorinated SA…
First principles calculations, by means of the full-potential linearized augmented plane wave method within the local density approximation, were carried out for the electronic and optical properties of the filled tetrahedral compounds LiMgN, LiMgP and LiMgAs. The bandgap trend in the ternaries is found to be similar…
Electrochemical noise measurements were performed to investigate the intrinsically stochastic character of the tribocorrosion process. Unidirectional sliding tests (pin-on-disc) were performed using AISI 304L stainless steel sliding against corundum. Experiments were carried out in Cl − and containing media under open…
Abstract Chain‐growth polycondensation of 3‐(alkylamino)benzoic acid alkyl esters 1 was investigated for obtaining poly( m ‐benzamide)s with defined molecular weights and low polydispersities. Polymerization conditions were first studied to find that ethyl 3‐(octylamino)benzoate ( 1b ) polymerized in a chain polymeriz…
Abstract The use of natural organic fillers in addition to postconsumer recycled polymers is getting a growing interest during the last years; this is due to many advantages they can provide in terms of cost, aesthetic properties, environmental impact. In this work, several types of wood flour (differing each other wi…
Abstract The blends of thermoplastic polyether‐based urethane elastomer (TPEU) and monomer casting polyamide 6 (MCPA6) were prepared using ε‐caprolactam (CL) as a reactive solvent, and CL sodium as a catalyst at various TPEU contents (2.5–15 phr by weight). In situ anionic ring‐opening polymerization and in situ compa…
We consider the nonequilibrium thermodynamics of glasses from various perspectives. For the commonly used equilibriumlike approach based on Gibbs' fundamental form with an additional pair of conjugate variables, we discuss possible choices of the independent out-of-equilibrium variable and we illustrate some implicati…
Molecular-scale understanding and manipulation of the wetting behavior of water on solids remains a fundamental challenge. Using diamond as a model system, we show that the naturally hydrophobic behavior of a hydrogen-terminated C(111) surface can be manipulated by replacing the H termination with a monolayer of adsor…
We have investigated the effective magnetic anisotropy in CVD-grown epitaxial $\mathrm{Cr}{\mathrm{O}}_{2}$ thin films and ${\mathrm{Cr}}_{2}{\mathrm{O}}_{3}∕\mathrm{Cr}{\mathrm{O}}_{2}$ bilayers using resonant radio-frequency transverse susceptibility (TS). While $\mathrm{Cr}{\mathrm{O}}_{2}$ is a highly spin polariz…
The title compound, Ba4Ga2B8O18Cl2.NaCl, is found to crystallize in a polar space group P4(2)nm with cell dimensions of a = 12.1134(2) A and c = 6.8456(1) A. The basic building blocks of the structure are the B4O9 groups, which are interconnected by the GaO4 tetrahedron to form a three-dimensional net with Ba2+ ion-,…
A detailed study of the formation of neutral oxygen vacancies in monoclinic tungsten oxide (WO 3 ) is performed within the framework of the self-consistent first-principles SIESTA method. This work reveals that the neutral oxygen vacancies are anisotropic with a strong correlation to the structural anisotropy of the W…
Abstract The synthesis of the new ligand, BEDT‐TTF‐bipy [4,5‐ethylenedithio‐4′,5′‐(4′‐methyl‐2,2′‐dipyrid‐4‐ylethylenedithio)tetrathiafulvalene] is reported. The first Fe II coordination complex, namely [Fe(NCS) 2 (BEDT‐TTF‐bipy) 2 ] · CHCl 3 , with this redox‐active ligand is obtained. Magnetic measurements and Mössb…
OBJECTIVE: The objective of this study is to delineate the molecular mechanisms responsible for Staphylococcus aureus-platelet adhesion as a function of physiologically relevant wall shear stresses. METHODS AND RESULTS: A parallel plate flow chamber was used to quantify adhesion of wild-type, Spa-, ClfA- and SdrCDE- s…
The morphological changes of isotactic polypropylene (iPP) subjected to varying shear strains have been investigated by the equal channel angular extrusion (ECAE) process. Morphological measurements were made by wide- and small-angle X-ray scattering (WAXS and SAXS) using synchrotron radiation, differential scanning c…
Abstract Exfoliated polypropylene (PP)/layered double hydroxide (LDH) nanocomposites have been successfully synthesized via melt‐intercalation. Their structure, thermal properties, and photo‐oxidative behavior have been characterized by X‐ray diffraction (XRD), transmission electron microscopy (TEM), thermogravimetric…
A new strategy to grow thermoelectric nanostructures on a wide variety of substrates is introduced. The synthesis involves the reduction of a selenium precursor to promote nucleation with bismuth ions to produce Bi2Se3 nanostructured films (see picture, scale bar 10 μm) under thermodynamic control. Thermoelectric tran…