Materials Literature
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Vorratshaltung: Ein μ-Oxo-μ-η2:η2-peroxotitan(salan)-Komplex (siehe Struktur; Ti violett, O rot, N blau, C grau) wurde aus dem entsprechenden Di-μ-oxotitan(salan)-Komplex mithilfe von 30-proz. Wasserstoffperoxid hergestellt. Der μ-Oxo-μ-η2:η2-peroxo-Komplex wird langsam in eine aktive Spezies des Katalysezyklus der as…
Pyridoxal 5'-phosphate-dependent enzymes may be grouped into five structural superfamilies of proteins, corresponding to as many fold types. The fold type I is by far the largest and most investigated group. An important feature of this fold, which is characterized by the presence of two domains, appears to be the exi…
A novel kind of hierarchical MgO nanostructure with bundles of nanowires, which were aligned onto six exposed planes of central cubic particles, was successfully synthesized by using a mixture of Mg, MgO, and carbon powder as source materials through the chemical vapor deposition (CVD) method. The evolution of the mor…
Magnetic Fe(2)O(3) nanoparticles coated with SiO(2) chemically doped with a Ru(II) complex were prepared using a simple solution based method. Field-emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM) showed that the Fe(2)O(3) nanoparticles with a mean diameter of ∼115 nm were suc…
We investigate the electronic and other properties of the hypothetical compound LiFeSb in relation to superconducting LiFeAs and FeSe using density-functional calculations. The results show that LiFeSb in the LiFeAs structure would be dynamically stable in the sense of having no unstable phonon modes and would have ve…
We investigate the correlation between plasmon-enhanced nonlinear white-light emission and single-molecule surface-enhanced Raman scattering (SERS) on fractal silver films using a conjugated polymer as a versatile analyte. Single molecule resonance SERS is preferentially observed from sample positions which do not exh…
Abstract This report addresses the physical concept and the results of mathematical modeling of cryogenic layer degrading caused by its radiation heating during direct drive target injection into the reaction chamber. Special attention is paid to the influence of a solid layer structure on the roughening of the layer…
3,3'- and 4,4'-biphenylene-bridged subporphyrin dimers were synthesized by means of a Ni-catalyzed homocoupling reaction. Distinctly red-shifted absorption bands and enhanced fluorescence were observed only for the latter, indicating effective through-bond interactions through a 4,4'-biphenylene bridge, which is not p…
The in-plane conductance of individual graphene nanoislands thermally grown on SiC substrate was successfully measured using an integrated nanogap probe without lithographic patterning. A Pt nanogap electrode with a 30 nm gap integrated on the cantilever tip of a scanning probe microscope enables us to image a conduct…
Supercritical water (SCW) and steam were used to prepare activated carbon fibers (ACFs) to study the different behaviors of these two agents. The results showed that activation with SCW is much faster than with steam and that the lower activation energy observed when SCW is used suggests that the mechanism of gasifica…
We report the determination of the Kerr constant $(B)$ and the real part of the third-order nonlinear optic susceptibility $({\ensuremath{\chi}}^{(3)})$ above the nematic-isotropic phase transition temperature $({T}_{NI})$ of a liquid crystal composed of bent-shaped molecules. The values of $B$ and ${\ensuremath{\chi}…
Hard x-ray photoemission and optical spectroscopies have been performed on YbS and Yb metal to determine the precise $f$-electron occupation. A comparison of the photoemission spectra with the energy-loss functions in bulk and surface, obtained from optical reflectivity, enables us to distinguish between the energy-lo…
The properties of a single semiflexible chain tethered to a planar surface with a long-ranged attractive potential are studied by means of Monte Carlo simulations. We employ the bond fluctuation lattice model and the Wang-Landau sampling technique. We present the diagram of states for semiflexible chains consisting of…
ZnO/MgO quasi core−shell quantum dots (QDs) were grown by a metal-organic chemical vapor deposition method on silicon substrates. The core−shell structure was well-characterized by a combination of cross-sectional transmission electron microscopy and angle-resolved X-ray photoelectron spectroscopy (XPS). Valence band…
The recently discovered FeAs-based superconductors show intriguing behavior and unusual dynamics of electrons and holes which occupy the $\text{Fe}\text{ }d$ orbitals and $\text{As}\text{ }4s$ and $4p$ orbitals. Starting from the atomic limit, we carry out a strong-coupling expansion to derive an effective Hamiltonian…
BACKGROUND: Members of the periplasmic binding protein (PBP) superfamily are involved in transport and signaling processes in both prokaryotes and eukaryotes. Biological responses are typically mediated by ligand-induced conformational changes in which the binding event is coupled to a hinge-bending motion that brings…
Two polyoxophosphotungstates, [Hen][Cu(en) 2 (H 2 O)] 2 [Cu(en) 2 (H 2 O) 2 ] 0.5 [{Cu(en) 2 (H 2 O)} 2 {Cu(en) 2 }(P 2 W 18 O 61 ) 2 ]·en· n H 2 O (en = ethylenediamine, n = 16.35), 1, and [HenMe] 2 [Cu(enMe) 2 ][{Cu(enMe) 2 }P 2 W 18 O 61 ]·9H 2 O (enMe = 1,2-diaminopropane), 2, have been synthesized under hydrother…
This paper describes a systematic study on molecular orientation and fluorescence properties for the Zn 2 Al layered double hydroxide (LDH) intercalated with α-naphthalene acetate (α-NAA) and β-naphthalene acetate (β-NAA), respectively. α-NAA and β-NAA intercalated Zn 2 Al LDH (denoted as α-NAA LDH and β-NAA LDH) were…
On the surface: Adsorption of O(2) at the surface oxygen vacancy (SOV) sites of TiO(2) reconstructs the lattice oxygen (healing SOVs), resulting in a decrease of the photocatalytic activity of oxidizing CO over vacuum-pretreated TiO(2) with increasing temperature (see scheme). Adsorption of H(2) produces new SOVs at t…
A simple size-controlled synthesis of cadmium sulfide (CdS) nanoparticle (NP) cores in the cavity of apoferritin from horse spleen (HsAFr) was performed by a slow chemical reaction synthesis and a two-step synthesis protocol. We found that the CdS NP core synthesis was slow and that premature CdS NP cores were formed…