Materials Literature
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A simple thermal vapor deposition technique to synthesize crystalline tungsten oxide nanorods in ambient condition is presented. Using a commercial thermal hot plate, a pure 99.9% tungsten foil is heated at 485 ± 5 °C under ambient conditions with a piece of 150 μm thick glass cover slide pressing on the tungsten foil…
The focus of this work is to study the refractive index in thin films of blue light-emitting poly(9,9-dioctylfluorene) (PFO) that contain extended rigid chains (β-phase). Using a post-deposition exposure to toluene vapour, β-phase chains were induced in glassy PFO films that had been spin coated from a range of soluti…
Keine Schaumschlägerei: Das CaII-Derivat Ca(NH2BH3)2 (siehe Bild; Ca grün, O rot, N blau, B gelb, C grau, H grüne Kreise) hat grundlegend andere thermische Eigenschaften als der Ammoniak-Boran-Komplex: Im Temperaturbeeich zwischen 100 und 170 °C setzt Ca(NH2BH3)2 Wasserstoff frei, ohne dass es zur Schaumentwicklung ko…
We have studied the temperature dependence of spectroscopic ellipsometry spectra of an electrically insulating, nearly stoichiometric $\mathrm{Y}\mathrm{Ti}{\mathrm{O}}_{3}$ single crystal with ferromagnetic Curie temperature ${T}_{C}=30\phantom{\rule{0.3em}{0ex}}\mathrm{K}$. The optical response exhibits a weak but n…
In this work, highly crystalline λ-MnO 2 nanodisks are synthesized via a simple microemulsion process by using polyvinylpyrrolidone (PVP) as a capping layer. Detailed information about the morphology, such as size, shape and crystallinity, was investigated by using x-ray diffraction, field emission scanning electron m…
We monitor the influence of the bond length alternation (BLA) modification on the static electronic polarizability and first hyperpolarizability of two polymethineimine oligomers. Four theoretical approaches are compared: HF, PBE0, LC-omegaPBE, and MP2. For the dodecamer, both HF and PBE0 are unable to foresee even th…
Novel multifunctional magnetic polycation drug carriers (MPDCs) were synthesized to provide simultaneous magnetically targeted cancer therapy and diagnosis via magnetic resonance imaging (MRI). The MPDCs consist of ultra-sensitive magnetic nanocrystals as MR probes and for magnetic targeting, and a chemotherapeutic ag…
ZnAl hydrotalcites containing increasing amounts of 9-anthracenecarboxylate anion (9AC) have been obtained via an anion-exchange procedure. In particular, intercalated and/or surface-exchanged samples were prepared to study the effect of the chromophore packing on their photophysical and photochemical behavior. Surfac…
Ammonium nitrate (AN) and ammonium sulfate (AS) are ubiquitous components of atmospheric aerosols. Thermodynamic models predict formation of pure (AN and AS) and double salts (3AN. AS and 2AN. AS) for the AN/AS system. Because of the high supersaturation at which a droplet crystallizes, metastable crystal formation is…
The catalytic adsorption of NO on activated carbon materials provides an appropriated alternative for the control of low-concentration emissions of this air pollutant. The surface complexes formed upon NO adsorption at 30 degrees C were studied by X-ray photoelectron spectroscopy (XPS) and temperature-programmed desor…
Abstract Carboxylated styrene acrylate latex samples have been functionalized by the immobilization and entrapment of the enzyme glucose oxidase (GOx), which can be used as an oxygen scavenger in food packaging. GOx was covalently immobilized both on the surface of already formed films and on the latex particles in di…
Abstract The performance of chemically synthesized dual‐acid‐doped polyaniline (PANI) electrode material was investigated for supercapacitors for the first time. Three different grades of PANI‐containing fluoroboric acid (HBF 4 ) as one of the dopants were prepared by a chemical polymerization method. PANI–dodecylhydr…
A facile synthetic pathway leading to significant yields of bifunctional polyhedral oligomeric silsesquioxanes (POSS) with two different functionalities on the same cage structure, namely Ti-NH2POSS, is proposed in this manuscript.
The creation of an effective two-way shape memory alloy (TWSMA) requires appropriate heat treatment and optimal training considerations. In particular, the training method used plays a key role. This work investigates different training methods for producing NiTi TWSMA wires with the hot shape of an arc and the cold s…
Abstract Diamond‐like carbon (DLC) films are gaining attention for its use in a wide range of tribological applications because of their low friction coefficient and high wear resistance. Recently, ultra‐low friction or superlubricity as low as 0.006 has been observed between hydrogen‐free DLC films lubricated with oi…
Abstract Hyperbranched polymers have been synthesized in a microreactor for the first time, employing the known ring‐opening multibranching polymerization of glycidol. Microreactors are well‐known to be beneficial for highly exothermic reactions because of their capability to enhance mass and heat transfer due to shor…
Currently, depolymerization and decolorization of chitosan are achieved by chemical or enzymatic methods, which are time consuming and expensive. Ozone has been shown to be able to degrade macromolecules and remove pigments due to its high oxidation potential. In this study, the effects of ozone treatment on depolymer…
A two dimensional amorphous material is modeled as an assembly of mesoscopic elemental pieces coupled together to form an elastically coherent structure. Plasticity is introduced as the existence of different minima in the energy landscape of the elemental constituents. Upon the application of an external strain rate,…
Polyhydroxyalkanoates (PHAs) are accumulated as intracellular granules by many bacteria under unfavorable conditions, enhancing their fitness and stress resistance. Poly(3-hydroxybutyrate) (PHB) is the most widespread and best-known PHA. Apart from the genes that catalyze polymer biosynthesis, natural PHA producers ha…
Seeding the liquid of d -mannitol with its polymorphs (α, β, and δ) revealed several cases of cross-nucleation between polymorphs. Only seeds of the α polymorph (the structure of the intermediate thermodynamic stability and the fastest growth rate) yielded the same polymorph in new growth. Seeds of the δ polymorph yie…