Materials Literature
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Cellulose fibres were treated with sodium hydroxide (NaOH) to improve the accessibility of chemical reagents and the roughness of fibre surface at low temperatures. The accessibility, supermolecular structure, morphology, and physical properties of fibres were investigated using solid-state cross polarisation/magic an…
The first members of a promising new family of hybrid amino acid-polyoxometalates have emerged from a search for modular functional molecules. Incorporation of glycine (Gly) or norleucine (Nle) ligands into an yttrium-tungstoarsenate structural backbone, followed by crystallization with p-methylbenzylammonium (p-MeBzN…
We derive from first principles the expression for the angular/wavelength distribution of the intensity diffracted by a blazed reflective grating, according to a scalar theory of diffraction. We considered the most common case of a groove profile with rectangular apex. Our derivation correctly identifies the geometric…
Synthetic copper(II) oxalate, CuC2O4, was obtained in a precipitation reaction between a copper(II) solution and an aqueous solution of oxalic acid. The product was identified from its conventional X-ray powder patterns which match that of the copper mineral Moolooite reported to have the composition CuC2O4·0.44H2O. T…
The fluorescence of a carboxylic azo monomer and its homopolymer was studied in solution, which can be controlled by solvent polarity, pH value and photoirradiation.
In this paper, we report the by first-principles predicted properties of the recently discovered magnetic MAX phase Mn2GaC. The electronic band structure and vibrational dispersion relation, as well as the electronic and vibrational density of states, have been calculated. The band structure close to the Fermi level i…
Polylactide (PLA), a main biodegradable and biobased candidate for the replacement of petrochemical polymers, is stiff and brittle at room conditions. It is therefore of high interest to formulate new PLA-based materials suitable for applications demanding flexibility and toughness. In this work, novel blends of PLA w…
Hierarchical porous carbon is prepared from sucrose by the nano-CaCO3 template method followed by NaOH activation for supercapacitors. As evidenced by SEM, TEM, nitrogen sorption and Hg porosimetry analysis, the carbon possesses a highly developed hierarchical porous texture containing interconnected micro-, meso-, an…
The excellent charge transport properties of graphene suggest a wide range of application in analog electronics. While most practical devices will require that graphene be bonded to a substrate, such bonding generally degrades these transport properties. In contrast, when graphene is transferred to Ge(001) its conduct…
We have developed a generalized model of particle-substrate interactions describing both adhesion and wetting behavior. Using a combination of the molecular dynamics simulations and scaling analysis we have shown that the crossover between adhesion and wetting-like behavior for a particle with size R p and shear modul…
The magnetic structure of the ${\mathrm{Eu}}^{2+}$ moments in the superconducting ${\mathrm{EuFe}}_{2}{({\mathrm{As}}_{1\ensuremath{-}x}{\mathrm{P}}_{x})}_{2}$ sample with $x=0.19$ has been determined using neutron scattering. We conclude that the ${\mathrm{Eu}}^{2+}$ moments are aligned along the c direction below ${…
The rational development of aqueous-phase catalysts is limited by a lack of fundamental understanding of the precise role of solvent molecules in the reactions. For deeper insight into these general processes, we carried out a detailed theoretical study of NaBH 4 hydrolysis to unravel a plethora of complex reaction pa…
Surface-modified magnetite (Fe3 O4 ) nanoparticles with an average size of 22 nm were prepared. The nanoparticles had a saturation magnetization of 50.7 emu g(-1) . Then magnetite and drug-loaded microspheres of poly (lactic acid)/poly (ethylene glycol) were prepared at various compositions. The microspheres were sphe…
Information from ex situ characterization can fall short in describing complex materials systems simultaneously exposed to multiple external stimuli. Operando X-ray absorption spectroscopy (XAS) was used to probe the local atomistic and electronic structure of specific elements in a La0.6Sr0.4Co0.2Fe0.8O(3-δ) (LSCF) t…
The molecular interactions of the Keggin polyoxometalate [Me2NH2]10[Ce(PW11O39)2] (1), which promotes selective hydrolysis of hen egg white lysozyme (HEWL) under physiological conditions, were investigated in detail by isothermal titration calorimetry (ITC), (31)P NMR and circular dichroism (CD) spectroscopy. ITC expe…
The major issue for biodegradable magnesium alloys is the fast degradation and release of hydrogen gas. In this article, we aim to overcome these disadvantages by using a surface modified magnesium implant. We have recently coated AZ91 magnesium implants by akermanite (Ca2 MgSi2 O7 ) through the combined electrophoret…
Abstract Directly linked linear porphyrin arrays were synthesized and their photophysical properties depending on the length of the arrays were investigated. Ag(I)-promoted oxidative coupling of 5,15-diaryl Zn(II) porphyrins has proven to be effective for preparations of very long meso–meso-linked Zn(II) porphyrin arr…
Mechano-stimuli, which causes mechanochromic luminescence when being applied on crystalline materials, facilitates the annealing crystallization of amorphous materials.
A novel drug delivery system based on an electric field and pH dual-stimuli responsive chitosan–gold nanocomposite (CGNC) is reported in the present study for site specific controlled delivery of the anticancer drug 5-fluorouracil (5-FU). At a higher pH of the solution CGNC encapsulates the drug molecules in its 3D-ne…
The authors summarize the applications of transmission electron microscopy in the field of nanotechnology. Transmission electron microscopy (TEM) has represented as a very powerful instrument for studying and researching about the structure of nanomaterials in the material science world. The quantitative measures of p…