Materials Literature
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Copper(II) bis-arginate [Cu(l-arg)2](NO3)2 (1) and [Cu(l-arg)(phen)Cl]Cl (2) as mimics of the minor-groove-binding natural antibiotic netropsin show preferential binding to the AT-rich region of double-stranded DNA. The complexes with a d-d band near 600 nm display oxidative DNA cleavage activity on photoirradiation a…
Abstract We investigated the influence of an epitaxially grown ZnS shell on the phonon spectra of CdSe nanorods of different sizes. The CdSe related Raman peaks shift with addition of a ZnS shell. The longitudinal optical phonon shifts slightly due to strain and the low‐energy shoulder shifts stronger, which can be ex…
We report on the hydrogen sensing property of Pd-capped Mg–Pd alloy thin films which were prepared by dc magnetron sputtering. Pd-capped Mg 0.9 Pd 0.1 films of thicknesses 10 nm Pd and 40 nm Mg–Pd show a good hydrogen sensing property for hydrogen-containing atmosphere at room temperature. Their sensing range is from…
Abstract The miscibility and melting behavior of binary crystalline blends of poly(ethylene terephthalate) (PET)/poly(trimethylene terephthalate) (PTT) have been investigated with differential scanning calorimetry and scanning electron microscope. The blends exhibit a single composition‐dependent glass transition temp…
Abstract Plasma induced graft polymerization of acrylic acid onto polypropylene (PP) monofilament was carried to introduce carboxyl functionality on its surface. The monofilament was treated with oxygen plasma to create hydroperoxide groups and subsequent graft polymerization was initiated on this exposed monofilament…
A series of SrCo 0.4 Fe 0.6− x Al x O 3−δ ( x =0, 0.1, 0.2, 0.3) perovskite oxides were synthesized using a gel‐combustion method. The doping of Al ions and its effect on the crystal structural stability, chemical expansion, and oxygen permeability of SrCo 0.4 Fe 0.6− x Al x O 3−δ have been investigated. The introduct…
A structure comprising nanotubes on a transparent substrate is a key to fabricating fast window-type electrochromic devices. We describe the fabrication of a thin porous anodic aluminium oxide (AAO) structure as a template and poly(3,4-ethylenedioxythiophene) (PEDOT) nanotubes. The AAO template with small pore diamete…
The family 2 pectate lyase from Yersinia enterocolitica (YePL2A), solved to 1.5A, reveals it to be the first prokaryotic protein reported to display the rare (alpha/alpha)(7) barrel fold. In addition to its apo form, we have also determined the structure of a metal-bound form of YePL2A (to 2.0A) and a trigalacturonic…
The thermodynamic and atomic structure properties of ${\mathrm{La}}_{1\ensuremath{-}x}{A}_{x}\mathrm{Co}{\mathrm{O}}_{3}$ ($A={\mathrm{Ba}}^{2+}$ and ${\mathrm{Ca}}^{2+}$) with $0\ensuremath{\leqslant}x\ensuremath{\leqslant}0.5$, a class of compounds that exhibit magnetoresistance in the presence of an applied magneti…
Two generations of poly(l-lysine) dendrigrafts (DGLs) were studied with regard to their ability to interact with and translocate through liposomal and cellular membranes. Partial guanidinylation of the surface amino groups of the starting dendrigrafts afforded the guanidinylated derivatives whose membrane translocatio…
We studied the temperature dependence of the structural relaxation in poly(vinyl acetate) near the glass transition temperature with single molecule spectroscopy from Tg-1 K to Tg+12 K. The temperature dependence of the observed relaxation times matches results from bulk experiments; the observed relaxation times are,…
Abstract The free‐radical copolymerization of 40–85 wt % of conjugated low‐saturation soybean oil (CLS), and a 9 :1 ratio of acrylonitrile (AN) and either divinylbenzene (DVB) or dicyclopentadiene (DCP) using AIBN as the initiator affords transparent yellow samples, which range from hard to slightly rubbery. DMA analy…
Perfekte Flächen sind das Kennzeichen tetraedrischer 3D-Übergitter aus 3.5 nm großen Ag2S-Kristallen, die direkt in einer Zweiphasenreaktion entstehen. Die erhaltenen Nanokristalle könnten dabei an der Grenzfläche zwischen Wasser- und Dodecanthiolphase Filme bilden, die dann in dreieckige Teilchen aufbrechen, aus dene…
Perfectly faceted tetrahedral 3D superlattice crystals, which are built up of 3.5-nm Ag2S crystals, have been directly prepared through a simple one-step, two-phase reaction. The as-prepared nanocrystals assemble at the interface of water and dodecanethiol phases to form superlattice films, then break into triangular…
Abstract Wheat gluten (WG)/montmorillonite (MMT) films were prepared by a thermomechanical process consisting of first mixing the components in a two‐blade, counter‐rotating device and second thermoforming the obtained dough. A significant loss in protein solubility due to the formation and rearrangement of disulfide…
Chemical surface characterization of biologically modified sol-gel derived silica is critical but somewhat limited. This work demonstrates the ability of x-ray photoelectron spectroscopy (XPS) to characterize the surface chemistry of peptide modified sol-gel thin films based on the example of four different free pepti…
Abstract Geoinspired synthetic chrysotile nanotubes both stoichiometric and 0.67 wt % Fe doped were characterized by transmission electron microscopy and electron diffraction. Bending tests of the synthetic chrysotile nanotubes were performed using the atomic force microscope. The nanotubes were found to exhibit elast…
The immobilization of macromolecules within porous materials for applications such as biosensing, biocatalysis, drug delivery, and protein separation requires an understanding of the conditions under which nanopores are accessible to macromolecules. We report the results of a detailed investigation into the infiltrati…
Kein bisschen ähnlich: Nach DFT-Studien verläuft die Ammoniak-Boran-Dehydrierung durch Iridium-Pinzettenkomplexe als konzertierter Hydrid- und Protonentransfer vom Ammoniak-Boran auf den Katalysator und nicht, wie früher vorgeschlagen, über eine B-H-Aktivierung und anschließende β-Hydrideliminierung vom Stickstoffatom…
In Reih' und Glied: Durch Konvektion werden in klaren, nichtviskosen verdünnten Lösungen supramolekulare Aggregate gebildet (siehe Bild). Die Ausrichtung erzeugt einen Lineardichroismus, der zu Artefakten in Circulardichroismusmessungen führt.