Materials Literature
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Erbium-doped ytterbium fluoride compounds with different crystal phases and morphologies have been synthesized via a facile hydrothermal route assisted with EDTA. Tunable upconversion emissions can be obtained by replacing Na+ with Li+ in NaYbF4 microcrystals. An interesting blue shift is observed and a mechanism base…
By designing a long and hydrophobic stilbeneboronic acid (STDBA) and allowing it to be included within the cavity of γ-cyclodextrin (γ-CyD) we succeeded in developing a fluorescent 2 : 2 STDBA-γ-CyD ensemble that shows a selective and sensitive response toward glucose in aqueous solutions, with satisfactory applicatio…
We demonstrated a new two-phase microwave-assisted method for the synthesis of high-quality copper sulphide (Cu2S) nanocrystals with well-defined size, chemical composition and crystal structure.
We perform in-situ uniaxial tensile tests on polyimide substrates with patterned ceramic islands. The islands fail by either channel cracking or debonding from the substrate, depending on island size and thickness. To understand why different failure modes occur, we have analyzed the fracture and debonding of stiff is…
A facile method for preparing graphene–polyaniline composite is proposed without the necessity of using graphene oxide. By adding CdS nanoparticles into the in situ polymerization system consisting of graphene and aniline monomers, a graphene–polyaniline composite with a well-bonded interface is yielded. It is found t…
This research is conducted to make solid-state electrolyte based on natural polymers, as an alternative material for energy storage such as battery. Natural polymers as materials of solid state batteries have various benefits, such as unlimited abundance, biodegradable, unleakage, stable form, excellent process, and e…
Three new molecular cages-a trigonal prism (2) and two cubic-shaped boxes of increasing size (3, 4)-featuring as many as 10 porphyrins were obtained in quantitative yields by self-assembly of a single bis-zincporphyrin metallacycle (1) with appropriate polytopic N-linkers: the trigonal planar tpt or the cruciform porp…
Multiwalled carbon nanotubes (MWCNTs) were synthesized using Fe/ZnO catalyst by a dual‐furnace thermal chemical vapor deposition (CVD) method at 800–1000 ° C using nitrogen gas with a constant flow rate of 150 sccm/min as a gas carrier. Palm olein (PO), ferrocene in the presence of 0.05 M zinc nitrate, and a p‐type si…
Neurodegenerative diseases involve the disorder of protein folding in which normally soluble proteins are deposited as abnormally insoluble fibrils that disrupt tissue structure and cause disease. Aluminum ion, Al(III), is known to induce formation of the insoluble β-sheet-rich fibrils, while curcumin is considered ca…
Alkali metal zirconates could be used as solid sorbents for CO2 capture. The structural, electronic, and phonon properties of Na2ZrO3, K2ZrO3, Na2CO3, and K2CO3 are investigated by combining the density functional theory with lattice phonon dynamics. The thermodynamics of CO2 absorption/desorption reactions of these t…
A space-confined synthesis method, using a mesoporous template to produce nano-sized copper particles (∼2 nm diameter) by the thermal hydrogen reduction (THR) of high surface area (∼105 m2 g−1) rod-like CuO–CeO2 calcined at 700 °C, is described. X-Ray diffraction (XRD) and temperature program reduction (TPR) results s…
Optimum conditions of germanium extractions were investigated from a sulphuric acid zinc solution by using a kind of extractant TOA, complexing agent C4H6O6and improving reagent C12H27O4P, in addition to kerosene as diluent and NaOH as stripping agent. The results show that this process has the following advantages: s…
A novel method of surface-initiated enzymatic vinyl polymerization was used to synthesize organic–inorganic hybrid core–shell particles comprising a silica core and a polyacrylamide shell covalently attached to the core surface.
In this work, we reported for the first time, a facile and one step synthesis of gold nanoparticles from HAuCl(4), employing tetraphenylborate as the reducing agent. The synthesis is not only facile but also yields "dumb-bell-shaped"particles. This shape appears to arise from a possible emulsion of the products of oxi…
A bipolar glycolipid self-assembles into organic nanotubes upon its chelation with an anticancer drug cis-dichlorodiamineplatinum(II) (CDDP). The facile synthesis of glycolipid, chelation-assisted formation of the nanotubes, and efficient loading and prolonged release of CDDP demonstrate a new approach to high-axial s…
Chemical industry is the base of the value chains, and has strong influence on the competitiveness of almost all branches in economics. To develop the technologies for sustainability and climate protection and at the same time to guarantee the supply of raw material is a big challenge for chemical industry. In the pro…
Nanocomposites of bacterial cellulose (BC) and poly(vinyl alcohol) (PVA) were prepared by cast-drying method as an easy way in producing nanocomposite films and to expand the use of BC. The contribution of PVA in nanocomposites was evaluated by measurement of cross-sectional surface, moisture uptake and mechanical pro…
Biodegradable poly(vinyl alcohol)/rice husk (PVA/RH) unplasticized composites are prepared by blending 10 wt%, 20 wt%, and 30 wt% of RH with PVA via solvent-casting technique. Composites are also prepared using boric acid as cross-linking agent. Tensile properties of PVA improved, though slightly, on adding RH and bor…
Seed-catalyzed, heteroepitaxial growth of high aspect-ratio, uniform ZnSe nanowires is reported, in which Ag2Se nanoparticles serve as heterogeneous seeds and as epitaxial substrates. Due to the difference in solubility product constants (Ksp: Ag2Se ≪ ZnSe), Ag2Se is precipitated before ZnSe and in situ seeds and cata…
Quantum dots (QDs) have recently been the focus of attention of many investigators for development of diagnostic tools in many research areas. In this work, we established a new QD-based assay to evaluate the antioxidant/polyphenolic activity. This assay is based on measurement of the inhibitory effect of the antioxid…