Materials Literature
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The tripodal amino-phosphinate ligands, tris(4-(phenylphosphinato)-3-benzyl-3-azabutyl)amine (H(3)ppba.2HCl.H(2)O) and tris(4-(phenylphosphinato)-3-azabutyl)amine (H(3)ppa.HCl.H(2)O) were synthesized and reacted with Al(3+), Ga(3+), In(3+) and the lanthanides (Ln(3+)). At 2 : 1 H(3)ppba to metal ratios, complexes of t…
Recently, genome projects have identified many hypothetical proteins, and the structures of these hypothetical proteins have been determined by structural genomics projects. One of the main objectives of structural genomics is to reveal novel protein folds. The open reading frame of TTHA1013, consisting of 73 amino ac…
Spontaneous polarization can be enhanced by increasing the crystal anisotropy of tetragonal Pb(Zr,Ti)O3 [PZT] lattice by Zr and Ti-site substitution with Dy3+ cations. Spontaneous polarization (Ps) in epitaxial film of 2% Dy3+-substituted tetragonal Pb(Zr0.40Ti0.60)O3 [Dy–PZT] was compared with that of nonsubstituted…
Abstract The first lutetium diphosphate NH 4 LuP 2 O 7 has been prepared by a two‐step, low‐temperature self‐flux synthesis in the presence of the F – anion, functioning as a mineralizer, which played a significant role in the synthetic process. The crystal structure has been characterized by single‐crystal X‐ray diff…
The three surface electronic states of Be(0001) have different symmetry as probed by high-resolution angle resolved photoemission (ARPES) with variable polarization synchrotron radiation. We probed the two ($\overline{\ensuremath{\Gamma}}\text{\ensuremath{-}}\overline{M}$ and $\overline{\ensuremath{\Gamma}}\text{\ensu…
Kleine, Fe3O4-fixierte Pd-Partikel können reversibel große Mengen an Sauerstoff in Form einer dünnen Palladiumoxidschicht an der Partikel-Träger-Grenzfläche speichern (siehe Bild). Durch Kombination von Molekularstrahlexperimenten mit Rastertunnelmikroskopie und Photoelektronenspektroskopie wird gezeigt, dass aus dies…
Dendrimere zwischen Schichten: Umgebungsresponsive dendritisch-lineare Blockcopolymere aus Polyethylenoxid und einem von 2,2′-Bis(hydroxymethyl)propionsäure abgeleiteten Dendron (siehe Struktur) wurden zur Anordnung von verglastem Organosilicat in nanostrukturierte lamellare Morphologien genutzt. Thermolyse des Templa…
A reliable method enabling electrical measurements on single nanowires prepared by electrodeposition in an alumina template is described. This technique is based on electrically controlled nanoindentation of a thin insulating resist deposited on the top face of the template filled by the nanowires. We show that this m…
Two models of p-hydroxybenzoic acid (PHBA) adsorbed on the surfaces of silver nanoparticles were established, each of them corresponding to an experimental configuration. The first model is PHBA adsorbed on one Ag atom through the carboxyl group, and the second one is PHBA adsorbed on two Ag atoms through the carboxyl…
Three different coating materials for lowering the H-atom recombination probability on stainless-steel chamber walls were investigated and the results were compared. SiO2 films prepared by natural oxidation of perhydropolysilazane, polytetrafluoroethene (Teflon) films, and H3PO4 coated SiO2 films were used as coating…
Abstract The photocoloring and fading kinetics of the photochromic 3,3‐diphenyl‐3 H ‐naphtho[2,1‐ b ]pyran (NPY) have been analyzed using a kinetic treatment for three related species recently developed by us ( Int J Chem Kinet 2005, 37(3), 162). The concepts of identifiability and distinguishability are developed wit…
The crystalline to liquid crystalline (Cr-LC) phase transition in thin films of zone-cast hexa-peri-hexabenzocoronene sixfold substituted with dodecyl side chains (HBC-C12H25) has been studied in detail using grazing incidence X-ray diffraction (GID), electron diffraction (ED), and variable angle spectroscopic ellipso…
The discrete-element surface roughness model is used to provide insight into the importance of the mean elevation of surface roughness in predicting skin friction over rough surfaces. Comparison of experimental data and extensive computational results using the discrete-element model confirm that the appropriate surfa…
Abstract Single crystals of m‐Nitroaniline (mNA) were grown by slow cooling solution growth technique. Induction period, interfacial energy and metastable zonewidth have been evaluated. The solubility of mNA has been estimated at different temperatures in acetone and ethanol. Interfacial energy has been estimated usin…
In the present work we have bound Pluronic, a class of triblock copolymers consisting of a block of polypropylene oxide (PPO) surrounded on each side by polyethylene oxide (PEO) blocks, to polystyrene surfaces and investigated the thrombogenicity and complement activation of this construct upon exposure to whole blood…
Silica or glass particles are introduced in a poly(dimethylsiloxane) (PDMS) matrix for various applications. A particular feature of these systems is that PDMS adsorbs on the surface of the dispersed particles, thus rendering them more hydrophobic with time. The mechanism of this process of in situ hydrophobization is…
Six new pyrazine-modulated N,N'-bis(alpha-pyridyl)-2,6-diaminopyridine ligands (PMN5) were synthesized and their complexes studied. Reaction of copper(II) with the ligand that contained one pyrazine ring in its terminal position led to formation of a one-dimensional zigzag complex whereas copper(II) reactions with lig…
Silicon nanocone arrays are formed on porous silicon substrates by plasma etching in a hot filament chemical vapour deposition system. The as-formed Si nanocones were characterized by means of scanning electron microscopy, high resolution transmission electron microscopy, energy dispersive x-ray analysis, and Raman sp…
Oberflächenveredelung mit Glycerin: Ein hoch viskoser Glycerin-Elektrolyt verhindert lokale Konzentrationsunterschiede und pH-Schwankungen beim Anodisieren von Titan. So entstehen Schichten von glattwandigen TiO2-Nanoröhren mit bis 7 μm Porenlänge und durchschnittlich 40 nm Durchmesser (siehe Transmissionselektronenmi…
[structures: see text] Novel macrocyclic and medium-size stilbenophanes tethered by silyl chains were synthesized, and their photochemical and photophysical properties were examined. Direct photoirradiation of macrocyclic stilbenophanes gave intramolecular photocycloadducts stereoselectively, and the efficiency increa…