Materials Literature
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Selective photoconversions of photochromic diarylethene derivatives has been described using diarylethene derivative 1a as a model compound. Upon irradiation with 254 nm light, 1a undergoes photocyclization to yield the ring-closed isomer 1b in the absence of oxygen, or is transformed to the thiolactone derivative 1c…
Single-crystalline mesoporous NaTbF4 nano-rice have been successfully synthesized in large scale by reaction of aqueous Tb3+ with sodium fluoride in the presence of ethylenediaminetetraacetic acid (EDTA) at 110 °C for 12 h, which were confirmed by X-ray powder diffraction, energy dispersive X-ray analysis, transmissio…
A first-principles study of structure property correlation and the origin of ferrimagnetism is presented based on LSDA+U method. In particular, the results for the ground state structure, electronic band structure, density of states, Born effective charges, spontaneous polarization and cationic disorder are discussed.…
An unusual PFO(3)(2-)-templated "inverse Keggin" polyanion, [Mo(12)O(46)(PF)(4)](4-), has been isolated from the degradation reaction of an {Mo(132)}-type Keplerate to [PMo(12)O(40)](3-) by [Cu(MeCN)(4)](PF(6)) in acetonitrile. (31)P-NMR studies suggest a structure-directing role for [Cu(MeCN)(4)](+) in the formation…
Air-stable metallic Co nanoparticles were incorporated into the pores or anchored onto the external surface of an ordered mesporous carbon/SBA-15 composite by simply treating the cobalt precursor-impregnated surfactant-containing SBA-15 via the Reaction under Autogenic Pressure at Elevated Temperature (abbreviated to…
The photochemistry and thermodynamics of two terthiophene (TTh) derivatives bearing benzospiropyran (BSP) moieties, 1-(3,3″-dimethylindoline-6'-nitrobenzospiropyranyl)-2-ethyl 4,4″-didecyloxy-2,2':5',2″-terthiophene-3'-acetate (BSP-2) and 1-(3,3″-dimethylindoline-6'-nitrobenzospiropyranyl)-2-ethyl 4,4″-didecyloxy-2,2'…
We report a study on manufacturing and characterization of a platform material for high‐performance lightweight bipolar plates for fuel cells based on nanocomposites consisting of carbon nanotubes (CNTs) and exfoliated graphite nanoplatelets (xGnPs). The experiments were designed and performed in three steps. In the p…
The crystallization characteristics of glasses based on the SiO2-CaO-Na2O-MgO (SCNM) system containing calcium fluoride (CaF2) have been investigated by differential thermal analysis (DTA), X-ray diffraction (XRD) and scanning electron microscopy (SEM). The partial replacement of CaO by CaF2 in the studied glass-ceram…
The growth mechanism of ZnO is investigated by a combination of electron microscopy and in situ small-angle X-ray scattering (SAXS). The particles are prepared by the precipitation of zinc nitrate with urea. Depending on the reaction conditions, ZnO, hydrozincite, or a mixture of both phases is detected in our system.…
This article presents the results of research on developing a multi-layer particle filtering half-mask made from biodegradable nonwovens for protection against harmful aerosols. Currently, these half-masks are made from polypropylene (PP), which is a problem in the context of environment protection. Needle-punched non…
Highly ordered Fe-MCM-41 molecular sieve was successfully synthesized by using n-hexadecyl-trimethyl ammonium bromide (CTAB) as the template and the iron ore tailings (IOTs) as the silicon and iron source. X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), diffuse reflectance UV-visible…
Protective surface layers with a high corrosion stability and significant microhardness as compared to the substrate material were obtained on MA8 magnesium alloy by Plasma Electrolytic Oxidation (PEO) in a silicate-fluoride electrolyte. The phase and elemental composition of the coatings were investigated. It was fou…
A synthetic route for mass production of monodisperse gold nanoclusters and nanoparticles is presented. A nanometer-sized raspberry-like architecture, consisting of an aggregation of repeated sequences of a three dimensional gold nanoparticle (AuNP)-organic component-AuNP arrangement, has been prepared with a single-s…
A zirconium modified MCM-48 mesoporous material was synthesized by surfactant-templated method. Surface grafting Zr-MCM-48 with tungstophosphoric acid led to a great enhancement of both the number of the Br?nsted acid sites and acidity strength in comparison with the bare support. At 100°C, the 30 wt% H3PW12O40/Zr-MCM…
Concentrated solutions of multi-walled carbon nanotubes modified with long-alkyl chains (eMWNTs) in a poly(vinyl chloride) (PVC)/cyclohexanone (CH) system are prepared. A cooperative effect between the eMWNTs, PVC and CH via van der Waals interactions, hydrogen bonding and halogen bonding is responsible for the improv…
Herein, we report a novel supramolecular phosphorescent material based on a β-cyclodextrin inclusion complex. This inclusion complex exhibits unprecedented excitation-light-responsive phosphorescent color changes, which is a promising candidate for dynamically photofunctional material.
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Weston M. Stacey; Principles and rationale of the Fusion-Fission Hybrid burner reactor. AIP Conf.…
New water-soluble and highly luminescent ZnSe/ZnS:Mn/ZnS core/shell/shell nanocrystals with color-tunable emission range between 580 and 600 nm were synthesized via a three-step in single flask method.
Machines designed to operate in marine environment are generally vulnerable to failure by corrosion. It is therefore imperative that the corrosion susceptibility of such facilities is evaluated with a view to establishing mechanism for its mitigation. In this study, the corrosion behaviour of as-cast and retrogression…
A novel star-shaped copolymer PEI10 000-g-PLL20, with a hyperbranched polyethylenimine (PEI) core and multiple linear poly(L-lysine) (PLL) peripheral chains was designed and synthesized. The star-shaped peptide, along with multiple counterions, was used as an organic template to direct the biomimetic synthesis of sili…