Materials Literature
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The dynamics of electron transfer across Au electrodes modified by ultrathin polyelectrolyte multilayers (PEM) and a diluted monolayer of Au nanoparticle was investigated as a function of the film thickness. Au electrodes were sequentially modified by a self-assembled monolayer of 11-mercaptoundecanoic acid (MUA), fol…
The multichromophoric dyads 1, 2 and triad 3 have been synthesized by coupling of the appropriately functionalized chlorin derivative with naphthalene diimide dyes through esterification, and subsequent metalation of the chlorin center with zinc acetate. The self-assembly properties of naphthalene diimide (NDI)-zinc c…
We study a doubly-degenerate orbital model on a honeycomb attice. This is a model for orbital states in multiferroic layered iron oxides. The classical and quantum models are analyzed by spin-wave approximation, Monte-Carlo simulation and Lanczos method. A macroscopic number of degeneracy exists in the classical groun…
The impact of PEGylation on the pharmacokinetics and biodistribution of (3)H-labeled poly l-lysine dendrimers has been investigated after intravenous administration to rats. The volumes of distribution, clearance and consequently the plasma half-lives of the PEGylated dendrimers were markedly dependent on the total mo…
We have performed x-ray photoemission spectroscopy (XPS), x-ray absorption spectroscopy (XAS), and resonant photoemission spectroscopy (RPES) measurements of Mn-implanted 3$C$-SiC (3$C$-SiC:Mn) and carbon-incorporated Mn$_{5}$Si$_{2}$ (Mn$_{5}$Si$_{2}$:C). The Mn 2$p$ core-level XPS and XAS spectra of 3$C$-SiC:Mn and…
We report the direct observation of the spin-singlet dark excitonic state in individual single-walled carbon nanotubes through low-temperature micro-photoluminescence spectroscopy in magnetic fields. A magnetic field up to 5 T, applied along the nanotube axis, brightened the dark state, leading to the emergence of a n…
We present spin wave dispersions in MnO, NiO, and $α$-MnAs based on the quasiparticle self-consistent $GW$ method (\qsgw), which determines an optimum quasiparticle picture. For MnO and NiO, \qsgw results are in rather good agreement with experiments, in contrast to the LDA and LDA+U description. For $α$-MnAs, we find…
The full-potential linearized augmented plane wave (FP-LAPW) method with the generalized gradient approximation (GGA) for the exchange-correlation potential has been applied to predict the elastic properties of quaternary oxyarsenide LaOFeAs - the basic phase for the newly discovered 26-52K superconductors. The optimi…
Super-compressible foam-like carbon nanotube films have been reported to exhibit highly nonlinear viscoelastic behaviour in compression similar to soft tissue. Their unique combination of light weight and exceptional electrical, thermal and mechanical properties have helped identify them as viable building blocks for…
Molecular dynamics simulations are used to investigate the diffusion process of nanoparticles in polymer melts. The effects of size, concentration, and mass of the particle, chain length, and polymer−particle interaction on the diffusion of particles in polymer melts are also explored. Our simulated results indicate t…
The plasmonic properties of arrays of supported Al nanodisks, fabricated by hole-mask colloidal lithography (HCL), are analyzed for the disk diameter range 61-492 nm at a constant disk height of 20 nm. Strong and well-defined (UV-vis-NIR) localized surface plasmon resonances are found and experimentally characterized…
Cover: Three key research fronts can be considered to improve the mechanical recycling activities and therefore extend the life cycle of polymeric materials: scientific knowledge about the degradation processes during first use and subsequent recycling, development of reliable quality analysis procedures for recycled…
In the search for non-lithographic methods for pattern formation on semiconductor surfaces, a facile self-assembly method relying on Au-assisted thermal annealing is employed to obtain rectangular and square micro-patterns on single crystal Ge surfaces. Such patterns can be exploited for the templated growth of biomat…
We determine and compare the thermodynamic properties of mono- and divacancies in the face-centered-cubic and hexagonal-close-packed hard-sphere crystals via a modified grand canonical ensemble. Widom-type particle insertion was employed to estimate the free energy of formation of mono- and divacancies, and the result…
The degradation behavior of Silk Fibroin (SF) by elastase was investigated. The inhibitory effects of the hydrolyzed solution on ?-glucosidase were also examined. Elastase follows MichaelisMenten kinetics with Km and Vm values of 14.49 mg/ml and 1.96 ?mol/min, respectively, and the SF peptides with Km and Ki values o…
Farbige Kristalle: Ein durch Hydrothermalsynthese erhaltenes dreidimensionales CdII-Koordinationspolymer zeichnet sich durch reversible Redoxphotochromie aus. In der ungewöhnlichen 426682-Topologie werden die Cadmiumzentren als fünffach koordinierte Knotenpunkte durch zwei Isomere einer Spezies verbrückt, die in situ…
Abstract We report on a convergent approach for the generation of dendrimers containing the [Ru 3 O(ac) 6 ] electroactive core, of great interest as multielectron transfer catalysts. The proposed strategy is based on the generation of the trimeric complex [{Ru 3 O(ac) 6 (4‐pic) 2 (pz)} 2 ‐μ 2 ‐Ru 3 O(ac) 6 (CH 3 OH)]…
Abstract The problem of the chemical enhancement of rhodamine 6G (R6G) adsorbed on silver cluster has been theoretically investigated by charge difference densities (CDDs) to show the direct charge transfer (CT) evidence. For surface‐enhanced resonance Raman scattering (SERRS) of R6G excited at 514.5 nm, the enhanceme…
The fabrication of metallic nanowire patterns within anodic alumina oxide (AAO) membranes on top of continuous conducting substrates are discussed. The fabrication protocol is based on the realization of nanowire patterns using supported nanoporous alumina templates (SNAT) prepared on top of lithographically defined m…
Abstract Ba 2 MSbO 6– δ (M = Fe, Co) double perovskites have been prepared in polycrystalline form by the solid‐state reaction in air and characterized by X‐ray diffraction (XRD), neutron powder diffraction (NPD), magnetic measurements and Mössbauer spectroscopy (for M = Fe). At room temperature, the crystal structure…