Materials Literature
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A novel transparent Co0.2Fe2.8O4@SiO2-polyetheretherketone hybrid material is prepared for electromagnetic interference shielding via in situ sol-gel process. 20% amino-functionalized polyetheretherketone (AFPEEK), containing trifluoromethyl units with excellent solubility is designed and synthesized to improve the st…
The first explanation of spin-crossover in iron(II) complexes was published in Chem. Commun. in 1966. This has led to nearly 50 years of research in coordination chemistry, crystal engineering, solid state chemistry and physics, and nanoscience involving this class of molecular switch.
We report in this paper the synthesis, characterisation and spin-crossover (SCO) properties of a series of nanocomposite materials containing very small (∼3 nm) Hofmann clathrate [Fe(pz){M(CN)4}] (M = Ni2+, Pt2+, Pd2+) nanoparticles embedded into different biopolymer polysaccharide matrices: chitosan and alginate. Wit…
Here, we first provide a facile ultrasonic-assisted synthesis of SnO using SnCl2 and the organic solvent of ethanolamine (ETA). The moderate alkalinity of ETA and ultrasound play very important roles in the synthesis of SnO. After the hydrolysis of the intermediate of ETA-Sn(II), the as-synthesized SnO nanoclusters un…
This paper aims at a systematic comparison of effect of single, double and triple pass welding on heat affected zone and tensile strength of AISI 304 stainless steel and chrome-manganese austenitic stainless steel. Degree of sensitization (DOS) increased with increase in number of passes and highest DOS (35.53%) was o…
The low frequency (nu < 500 cm(-1)) vibrational spectra of hydrated porous silica are specifically sensitive to the hydrogen bond interactions and provide a wealth of information on the structural and dynamical properties of the water contained in the pores of the matrix. We investigate systematically this spectral re…
A cysteine-selective tagging method in water is reported, based on rapid displacement of a pyridyl nitro-substituent in simple pyridines and lanthanide complexes. The conjugation reaction creates a short link between the tag and peptide, holding the peptide closer to the Ln(3+) ion and with reduced flexibility compare…
Polystyrene microspheres coated with detonation nanographite particles have been prepared by Pickering emulsion polymerization using azobisisobutylonitrile (AIBN) as initiator in aqueous solutions. In the present techniques, the pristine detonation nano‐graphite particles were employed as stabilizer of Pickering emuls…
We report on the synthesis of a novel type of ultrathin hydrogel with remarkably high, fast and reversible swelling/shrinkage and sharp surface wettability transitions in response to pH changes. The poly(4-vinylpyridine) (PVP) hydrogels are produced by the selective cross-linking of PVP copolymer layers in PVP/poly(me…
ZrB2 modified carbon–phenolic (C–Ph) composites are fabricated by the impregnation method, and the ablation performance of the composites is tested using an oxyacetylene flame. In addition, the microstructure of the ablation zone is observed with a scanning electron microscope (SEM). The results indicate that the line…
In situ Raman spectroscopy combined with quantitative FT-IR gas phase analysis was used to elucidate the mechanism of NO2 storage in ceria. At room temperature, NO2 exposure induces an immediate increase in the degree of ceria reduction accompanying nitrate formation. Two parallel reaction pathways for nitrate formati…
The growth process and crystallizing mechanisms of anodic oxide films on highly pure titanium plates are studied in 0.1 M H 2 SO 4 solution at potentiostatic, potential-sweep and combined anodization modes with the same final voltage of 30 V. The influences of anodization mode on the crystalline behavior, surface morp…
Dark field imaging was employed to visualize and quantify complementary DNA-induced gold nanoparticle aggregation at the single-particle level, with a detection limit of 100 fM DNA, which allows the highly sensitive detection of single nucleotide polymorphisms (SNPs). Results suggested that the aggregation process is…
We examined the genotoxicity of magnetite nanoparticles (primary particle size: 10 nm) on human A549 and Chinese hamster ovary (CHO) AA8 cells. Six hours' treatment with the particles dose-dependently increased the frequency of micronuclei (MN) in the A549 and CHO AA8 cells up to 5.2% and 5.0% at a dose of 200 µg/ml (…
A diamide armed with a photochromic azobenzene unit and a nucleophilic pyridyl group varied its aggregation/dissociation state depending on the trans/cis geometry of the azobenzene. The catalytic activity of the pyridyl group was closely linked to the aggregation/dissociation state and hence photoirradiation could man…
In this work we studied glycine crystallization with two main objectives: (i) to get improved control of crystal growth and polymorphic selectivity of organic molecules; (ii) to achieve additional insights into the nucleation mechanisms of glycine polymorphs. To reach these goals, membrane crystallization technology,…
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Composite engineering comprises of metal matrix composites. They have high strength-weight ratio, better stiffness, economical production, and ease of availability of raw materials. The discovery of carbon nanotubes has opened new possibilities to face challenges better. Carbon Nanotubes are known for their high mecha…
Low Damage Cryogenic Etching of Porous Organosilicate Low-k Materials Using SF6/O2/SiF4, Zhang, Liping, Ljazouli, Rami, Lefaucheux, Philippe, Tillocher, Thomas, Dussart, Remi, Mankelevich, Yuri A., de Marneffe, Jean-Francois, de Gendt, Stefan, Baklanov, Mikhail R.
We present a simple and efficient model for predicting the adsorption of molecules on metal surfaces. This heuristic model uses six descriptors for each metal (number of d-electrons, surface energy, first ionization potential and atomic radius, volume and mass) and three for each adsorptive (HOMO-LUMO energy gap, mole…