Materials Literature
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Abstract Plasma polymers containing oxygen‐ and nitrogen‐based surface chemistries were prepared from allyl alcohol, allylamine and acrylic acid. Established selective chemical derivatisation procedures with trifluoroacetic anhydride (TFAA) and 4‐trifluoromethyl benzaldehyde (TFBA) were used to determine alcohols and…
Abstract In this work, the effect of hard particle size and blend ratio on the film formation behavior of hard polystyrene (PS) and soft poly( n ‐butyl acrylate) (PBA) latex blends was studied by means of steady‐state fluorescence and UV–visible techniques in conjunction with atomic force microscopy. Three different s…
X‐ray photoelectron spectroscopy was used to detect an intergranular impurity film in two (Ba x Cs y )(Mn z Ti 8− z )O 16 hollandite samples sintered in argon and air, respectively. This impurity film is enriched in Cs and Ba, as a result of segregation during high‐temperature processing. The Cs ions in the grain‐boun…
Coenzyme A (CoA or CoASH) is one of the most important biologically active compounds, and for this reason a reliable, fast and simple determination of CoASH is needed. Here we are described a simple and fast way of determinating CoASH using potentiometric flow-injection analysis and spectrophotometric kinetic determin…
Lateral diffusion of single chain related to the crystallization process of poly(ethylene oxide) (PEO) in its monolayers on silica surfaces is studied by single molecule fluorescence microscopy and single molecule tracking techniques. Diffusion of PEO chains is observed in the supercooled state before crystallization…
A recently formulated reactive Monte Carlo (RxMC) algorithm has been applied to determine the differential dissolution probability in topographically distinct crystallographic faces of β-cristobalite. Although the contribution of edge, kink, and step sites to the overall dissolution from a crystal is well-established,…
In this work, we succeeded in preparing in-plane zinc oxide nanowires using a Ti-grid assisted by the chemical vapor deposition method. Optical spatial mapping of the Confocal Raman spectra was used to investigate the phonon and geometric properties of a single ZnO nanowire. The local optical results reveal a red shif…
We investigate the temperature- and humidity-dependent mechanical response of tetragonal lysozyme crystals using a continuum-based crystal plasticity model calibrated with existing experimental data. The effects of temperature and intracrystalline water are incorporated in the elastic constant of the protein crystal a…
Abstract Film stability of functionalised plasma polymer (PP) films in aqueous environments is an issue. Whilst methods are routinely employed to enhance aqueous stability, the issue itself has not previously been systematically studied. Herein, we describe a method using gradient PP surfaces whereby aqueous stability…
Abstract Epitaxial thin films of bismuth ferrite, BiFeO 3 , were deposited by pulsed laser deposition (PLD) on SrTiO 3 (100), Nb‐doped SrTiO 3 (100) and DyScO 3 (110) substrates. Ellipsometric spectra are obtained in the energy range 0.73‐9.5 eV by combining Variable Angle Spectroscopic Ellipsometry (VASE) and vacuum…
In the presence of various organic amines/alkali metal cations or [TM(amine) m ] n + complexes as templates or structure-directing agents, a series of mercury antimony chalcogenide compounds have been solvothermally synthesized and structurally characterized. The compound [(Me) 2 NH 2 ] 2 HgSb 8 S 14 ( 1 ) features a…
The Langmuir-Blodgett (LB) method was used to deposit multilayers of polyaniline (PANI)- and mercaptoethanesulfonate (MES)-stabilized Au nanoparticles. The electrostatic interaction between the negatively charged nanoparticles in the subphase and the positively charged PANI at the air-water interface assisted the depo…
S and CO adsorption and coadsorption on Pd(111), Au(111), and PdAu(111) surfaces were studied, with the aim of providing insight into the poisoning effects of S and searching for novel sulfur-tolerant catalyst materials by first-principles calculations. It was found that both neighboring and next-nearest-neighboring a…
Zusammenarbeit auf lokaler Ebene: FeII-Komplexe mit planaren dreizähnigen N-Liganden ergeben auf hochgeordnetem Graphit regelmäßige eindimensionale Anordnungen von mehreren 100 nm Länge. Mit Rastertunnelspektroskopie wurde die molekulare Leitfähigkeit und dadurch der Spinzustand ermittelt. Die Verteilung der Spinzustä…
The preparation and characterization of two d 9 −d 9 M 2 -bonded Pt 2 (dppm) 2 (C≡CC 6 H 4 -M( P )) 2 complexes (where M = Zn or Pd, and P = diethylhexamethylporphyrin) were achieved. The central [Pt 2 (dppm) 2 (C≡CC 6 H 4 ) 2 ] organometallic unit appears to be an independent chromophore and is suspected to be lumine…
Transparent conducting oxides (TCO) are widely used in technological applications ranging from photovoltaics to thin-film transparent field-effect transistors. In this work we report a first-principles investigation, based on density-functional theory, of the atomic and electronic properties of ${\text{Ga}}_{2}{\text{…
Thin films of perovskite-structured oxides with general formula ABO(3) have great potential in electronic devices because of their unique properties, which include the high dielectric constant of titanates, (1) high-T(C) superconductivity in cuprates, (2) and colossal magnetoresistance in manganites. (3) These propert…
The dispersion of electrons and phonons near the $K$ point of bilayer graphene was investigated in a resonant Raman study using different laser excitation energies in the near-infrared and visible range. The electronic structure was analyzed within the tight-binding approximation, and the Slonczewski-Weiss-McClure par…
Lanthanide salts of phytanic acid, an isoprenoid-type amphiphile, have been synthesized and characterized. Elemental analysis and FTIR spectroscopy were used to confirm the formed product and showed that three phytanate anions are complexed with one lanthanide cation. The physicochemical properties of the lanthanide p…
The formation mechanism of copper nanoparticles (NPs) using poly(N-vinyl-2-pyrrolidone) (PVP) as a capping agent was investigated by measurements of X-ray diffraction (XRD), transmission electron microscopy (TEM), in situ time-resolved X-ray adsorption fine structure (XAFS) analysis, in situ UV-vis spectroscopy, and a…