Materials Literature
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Biomimetisches MOF: Die hochstabilen MOFs PCN-222(M) (M=Fe, Mn, Co, Ni, Cu und Zn) mit offenen Metallzentren und besonders großen 1D-Kanälen enthalten achtfach verknüpfte Zr6-Cluster und redoxaktive Metalloporphyrinmotive. PCN-222(Fe) zeigt Peroxidase-ähnliche Aktivität in wässriger Lösung und oxidiert eine Reihe von…
The reduced chain entanglement of brush polymers over their linear analogs drastically lowers the energetic barriers to reorganization. In this report, we demonstrate the rapid self-assembly of brush block copolymers to nanostructures with photonic bandgaps spanning the entire visible spectrum, from ultraviolet (UV) t…
ADVERTISEMENT RETURN TO ISSUEPREVReviewNEXTCovalent Mechanochemistry: Theoretical Concepts and Computational Tools with Applications to Molecular NanomechanicsJordi Ribas-Arino*† and Dominik Marx*†View Author Information† Lehrstuhl für Theoretische Chemie, Ruhr−Universität Bochum, 44780 Bochum, Germany*E-mail: [email…
Poly(vinyl alcohol)-coated polypyrole, a conductive polymer that forms nanoparticles in the aqueous phase, is used as a near-infrared light-absorbing agent for photothermal therapy of cancer, obtaining excellent cancer ablation therapeutic effects in both cellular and animal experiments.
Biomimetic MOF: Extremely stable MOFs with different open metal sites and ultra-large 1D channels, PCN-222 (Fe, Mn, Co, Ni, Cu, and Zn), have been assembled with eight-connected Zr6 clusters and redox-active metalloporphyrin motifs. PCN-222(Fe) shows peroxidase-like activity in aqueous solution, exhibiting highly effe…
Metal oxide nanostructures are promising electrode materials for lithium-ion batteries and supercapacitors because of their high specific capacity/capacitance, typically 2-3 times higher than that of the carbon/graphite-based materials. However, their cycling stability and rate performance still can not meet the requi…
We report on solid-state mesoscopic heterojunction solar cells employing nanoparticles (NPs) of methyl ammonium lead iodide (CH(3)NH(3))PbI(3) as light harvesters. The perovskite NPs were produced by reaction of methylammonium iodide with PbI(2) and deposited onto a submicron-thick mesoscopic TiO(2) film, whose pores…
Abstract Phase‐change memory is a promising candidate for the next generation of non‐volatile memory devices. This technology utilizes reversible phase transitions between amorphous and crystalline phases of a recording material, and has been successfully used in rewritable optical data storage, revealing its feasibil…
In situ TiBw and La2O3 reinforced titanium matrix composites were successfully fusion welded by the gas tungsten arc welding (GTAW) process and the weldability and feasibility for composites were studied, and uniform and defect free welds were produced with sound welding parameters. Microstructural observations showed…
We present self-consistent calculations of electron transport in graphene nanoconstrictions within the Hartree approximation. We consider suspended armchair ribbons with V-shaped constrictions having perfect armchair or zigzag edges as well as mesoscopically smooth but atomically stepped constrictions with cosine prof…
As stated before, the water permeability of materials or structures may be used as an indicator for the durability. The intention of the presented work was to link the water permeability to the crack pattern. It soon became apparent that the maximum crack width as well as the average crack width should not be used for…
Abstract The properties of recycled low temperature biodegradable polycaprolactone‐based thermoplastic polyurethane (rTPU), filled with different types of organically modified montmorillonite (MMT) prepared by two‐roll milling, were studied. The dependence of rTPU properties on the mastication time and clays content w…
Abstract Zwitterionic hybrid SBA‐15 mesoporous silica materials containing both amine and sulfonic acid groups have been synthesized through cocondensation from as‐synthesized zwitterionic siloxane precursors (ZS) with tetraethoxysilane (TEOS). Characterization by XRD, TEM, and N2 adsorption–desorption measurements sh…
The crystallization of multicomponent triacylglycerol (TAG) mixtures, for example, edible fats, is of paramount importance in the manufacture of products such as chocolate, ice cream, and butter (Garside, 1978; Hartel, 2001). The crystallization behavior and structure of these materials is extremely sensitive to heat…
Abstract The tensile stress and strain under small deformation for plastics/elastomer blends were analyzed, based on a geometric model and mechanical element model, and a Young’s modulus equation was derived based on the hypothesis with equal strain and Hooke’s law. The polypropylene (PP)/polyolefin elastomer (POE) bl…
In order to get to the bottom of substitution effects reported in CuCrO${}_{2}$ delafossite, structural, magnetic, and electric properties of several CuCr${}_{1\ensuremath{-}x}$M${}_{x}$O${}_{2}$ series, where M${}^{3+}$ is a $S$ $=$ 0 cation (M${}^{3+}$ $=$ Al${}^{3+}$, Ga${}^{3+}$, Sc${}^{3+}$, Rh${}^{3+}$), have be…
High-Tc superconductors with CuO 2 layers, manganites La 1-x Sr x MnO 3 and cobaltites LaCoO 3 present several mysteries in their physical properties. Most of them are believed to come from the strongly-correlated nature of these materials. From the theoretical viewpoint, there are many hidden rocks in making the cons…
Abstract Spark plasma sintering (SPS) of carbon nanotubes based materials to diamond was conducted at a very low pressure in vacuum and argon atmospheres. The phases and microstructures of the sintered samples were analyzed by Synchrotron X‐ray, Raman spectroscopy, and scanning electron microscopy. Diamond phases are…
In this work, a thin, flexible and mechanically stable polymer conducting material (Silk‐Ion Jelly) was developed though application of Ion Jelly on to silk fabrics. Ion Jelly was prepared through jellification of a room temperature ionic liquid, 1‐butyl‐3‐methyl‐imidazolium dicyanamide ([bmim][dca]) using gelatin and…
Nanocomposite foams, based on ethylene vinyl acetate copolymer, were prepared by melt blending of ethylene vinyl acetate with organically modified montmorillonite and at a high curing pressure of the blends. The organically modified montmorillonites were obtained by the modification of montmorillonite with octadecyl t…