Materials Literature
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A novel polyazomethines bearing triphenylamine core and a proper model compound were synthesized and their spectroscopic (FTIR, 1 H NMR) and optical (UV-vis, photoluminescence) properties and also a molecular dynamic calculations were investigated. The polymers which were soluble in organic solvents (chloroform, dimet…
The mechanical properties of magnesia–spinel composite ceramics, which are candidate materials for supporting solid oxide fuel cells, have been measured as a function of porosity (up to 30%) and temperature (up to 900°C). The theory for the ring‐on‐ring test has been re‐examined to resolve an inconsistency in the lite…
Brushing the surface: Structured polymer brushes are readily prepared by site-selective immobilization of initiators in a self-assembly process by Langmuir–Blodgett lithography with subsequent polymerization. The AFM images show a DPPC/alkoxy amine LB film before and after surface-initiated controlled nitroxide-mediat…
Abstract One‐pot synthesis of pH‐responsive PEGylated nanogels (diameter <100 nm) containing gold nanoparticles (AuNPs) was successfully carried out through the autoreduction of HAuCl 4 with PEGylated nanogels constructed from cross‐linked poly[2‐( N , N ‐diethylamino)ethyl methacrylate] (PDEAMA) core and tethered…
Synthesis of ZnS nanocrystals with controllable structure and morphology and their photoluminescence property, Li, Zepeng, Liu, Bingbing, Li, Xianglin, Yu, Shidan, Wang, Lin, Hou, Yuanyuan, Zou, Yonggang, Yao, Mingguang, Li, Quanjun, Zou, Bo, Cui, Tian, Zou, Guangtian, Wang, Guorui, Liu, Yichun
Abstract Seeding is discussed from the viewpoint of reproducible process actuation. Seeded experiments in a 75‐l Draft‐Tube (DT) crystallizer were performed in triplicate to verify reproducibility of the product characteristics. The seeded experiments displayed a significantly improved reproducibility of the results i…
A methodology to allow the deliberate design of solid precursors to affect the solid‐state synthesis of materials has proven elusive. We have designed a conceptual synthesis route for M n +1 AX n phases that does not involve the usual intermediate phases. Instead, it is proposed that the common structural units within…
In this paper we report the synthesis of single-walled carbon nanohorns (SWNHs) and highly convoluted graphene sheets by AC powered arc discharge in air. The experimental strategy was based on the design of an experimental set-up able to enhance the synthesis of these compounds at the expense of the usually found cath…
Abstract The rheological, thermal, and mechanical properties of blends consisting of a linear high melt flow rate polypropylene (PP) and two branched PPs are characterized in detail. Blends containing branched PPs display evidence of miscibility in the melt state and exhibit high melt elasticity together with signific…
The thermal properties of hcp metals Mg, Ti, and Zr are investigated by performing density functional theory and density functional perturbation theory calculations within the quasiharmonic approximation. The temperature dependence of various quantities such as the anisotropic thermal expansion, the heat capacity, bul…
We propose a novel method to measure time-dependent linear susceptibilities in molecular simulations, which does not require the use of nonequilibrium simulations, subtraction techniques, or fluctuation-dissipation theorems. The main idea is an exact reformulation of linearly perturbed quantities in terms of observabl…
We produced core–shell (CdSe)ZnSe quantum dots by direct colloidal chemical synthesis and the surface-passivation method—an overcoating of the core CdSe with a larger-bandgap material ZnSe. The (CdSe)ZnSe quantum dots(QDs) play the role of a colour conversion centre. We call these quantum dots nanophosphors. We fabric…
Abstract This work investigates the relationship among the processing, morphology, and the mechanical properties of injection‐molded poly( L ‐lactic acid) (PLLA). Melt processing temperature, mold temperature, injection flow rate, and holding pressure were systematically changed following a design of experiments array…
Abstract The cell structure and properties of branched and linear polypropylene (PP) foams containing organically modified nanoclay and maleic anhydride grafted polypropylene (PPMA) have been thoroughly investigated. X‐ray diffraction (XRD) and melt rheometry were used to identify the structure and linear viscoelastic…
The hopping movements of mobile ions in a nanostructured LiAlSiO4 glass ceramic are characterized by time-domain electrostatic force spectroscopy (TDEFS). While the macroscopic conductivity spectra are governed by a single activation energy, the nanoscopic TDEFS measurements reveal three different dynamic processes wi…
Purpose To correlate the inhibitory effect of triazole compounds on the corrosion of copper in HCl at various temperatures by semi‐empirical molecular orbital theory. Design/methodology/approach Two triazoles were selected as the best inhibitors among the triazole compounds tested. Gravimetric and electrochemical meas…
Abstract Mechanochemically devulcanized ground rubber tire (GRT) was (re)vulcanized in compositions with virgin natural rubber (NR). The NR/GRT (re)vulcanizates with GRT content from 20 to 60 wt% have been prepared and studied. Reclaiming of GRT was successfully carried out by tetra methyl thiuram disulfide (TMTD) in…
Abstract This paper discusses the effects of ultrasound on the production of particles by precipitation and crystallization. Examples are given from the formation of crystals of BaSO 4 , K 2 SO 4 , TiO 2 and sucrose. It is shown that ultrasound reduces the induction time, narrows the width of the metastable zone and l…
Abstract Self‐assembled nanotubular structures of polyaniline were chemically synthesized from solutions containing different amino acids with the addition of ammonium persulfate as the oxidant. The materials were characterized by SEM and a range of spectroscopic methods. Spectroscopic characterizations revealed that…
Although they are relatively different in band shape, infrared features around 3.4-3.5 μm in the emission spectra of HD 97048 and Elias 1 and in the absorption spectra of various dense clouds have both been attributed to diamondoid molecules/particles. This assignment is based mainly on infrared spectra of hydrogenate…