Materials Literature
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In line with recent environmental policies, increased attention has been paid to the development of bio-based nanocomposite materials for several industrial applications, such as automotive, construction, packaging or medical applications. Thus, much effort has been devoted to the use of natural fibers in composite ma…
Anodization of tungsten in NaOH leads to the growth of a porous tungsten oxide layer with either irregular trenches or isolated nanobubbles. For anodic potentials between 30 to 40 V and NaOH concentrations of 2–3 M, nanobubbles with diameters of ∼40 nm form spontaneously and self-organize into hexagonal close-packed o…
Abstract New thermoplastic poly(ether–urethane)s and poly(carbonate–urethane)s were synthesized by a one‐step melt polymerization from poly(oxytetramethylene) diol (PTMO) and poly(hexane‐1,6‐diyl carbonate) diol (PHCD) as soft segments, 4,4′‐diphenylmethane diisocyanate, and 2,2′‐[methylenebis(1,4‐phenylenemethyleneth…
2,3,7,8,12,13,17,18-Octaethyl-5,15-diphenylporphyrin (1) is characterized by an inner cavity with a rectangular shape and small NH⋅⋅⋅N distances. It resembles porphycene, which is a constitutional isomer of porphyrin known for its strong intramolecular hydrogen bonds and rapid tautomerization. Such distortion of the p…
In the last years, a variety of biopolymers have been investigated as soft matrices to accommodate inorganic nanoparticles (Darder et al., 2007; Dias et al., 2011). Innovation in Nanomedicine has been a major driving force to create new bionanocomposites because these materials bring together the intrinsic functionali…
Abstract We newly synthesized transparent films composed of pH-sensitive spin-crossover complex [FeII(diAMsar)] (diAMsar: 1,8-diaminosarcophagine) and an ion-exchange polymer, Nafion, having different colors corresponding to proton concentration. The UV–vis spectroscopic measurements revealed that the films, which wer…
Using a simple density functional theory (DFT) the height of the free energy barrier for forming a droplet of the liquid phase from the metastable gas phase is determined for a model colloidal fluid exhibiting competing interactions. The pair potential has a hard core of diameter σ, is attractive Yukawa at intermediat…
The sensitivity of magnetic resonance imaging (MRI) contrast agents is highly dependent on the rate of water exchange between the inner sphere of a paramagnetic ion and bulk water. Normally, identifying a paramagnetic complex that has optimal water exchange kinetics is done by synthesizing and testing one compound at…
Here, we describe an improved system for protein crystallization based on heterogeneous nucleation using fluorinated layered silicate. In addition, we also investigated the mechanism of nucleation on the silicate surface. Crystallization of lysozyme using silicates with different chemical compositions indicated that f…
We explore the electrical transport and magneto-conductance (MC) in quasi-two-dimensional strongly correlated ultra-thin films of LaNiO 3 (LNO) to investigate the effect of hetero-epitaxial strain on electron–electron and electron–lattice interactions from the low to intermediate temperature range (2–170 K). The fully…
Structures of CsTe₂O(6-x) phases were investigated by single-crystal X-ray diffraction and neutron powder diffraction. Stoichiometric CsTe₂O₆ is a mixed-valence Cs₂Te⁴⁺Te₃⁶⁺O₁₂ compound with a rhombohedral pyrochlore-type structure where there is complete order of Te⁴⁺ and Te⁶⁺. On heating, this compound develops sign…
Mobility of two-dimensional electron gases in MgZnO/ZnO heterostructures with interface roughness effects was investigated theoretically using path-integral framework. We modelled the roughness-induced fluctuation by including two major effects, i.e. the electron and polarization-induced positive charge concentrations…
Spider major ampullate silk is a high-performance biomaterial that has received much attention. However, most studies ignore plasticity in silk properties. A better understanding of silk plasticity could clarify the relative importance of chemical composition versus processing of silk dope for silk properties. It coul…
One of the most severe limits in future design of graphene-based electronic devices is that when supported on a substrate, the electron mobility of graphene is often reduced by an order of magnitude or more. In this paper, via theoretical calculations, we show that the non-polar β-Si3N4 (0001) surface may be an excell…
Temperature-dependent interplane resistivity ${\ensuremath{\rho}}_{c}(T)$ was measured systematically as a function of transition-metal substitution in the iron-arsenide superconductors Ba(Fe${}_{1\ensuremath{-}x}$$M$${}_{x}$)${}_{2}$As${}_{2}$, $M=\text{Ni}$, Pd, Rh. The data are compared with the behavior found in B…
The automation and integration of processes in the textile industry is dictated by the \nincreasing need to offer specialized products at optimum quality and low cost, satisfying at \nthe same time the fast cycles of fashion trends or in the case of technical applications the \ndelivery of products of high…
We theoretically examine the orbital excitations coupled to the spin degree of freedom in the parent state of the iron-arsenide superconductor, based on the calculation in a five-band itinerant model. The calculated Fe ${L}_{3}$-edge resonant inelastic x-ray scattering (RIXS) spectra disclose the presence of spin-flip…
Abstract The effects of an intercalating agent on the morphology and thermal and flame‐retardant properties of low‐density polyethylene (LDPE)/layered double hydroxide (LDH) nanocomposites were studied with Fourier transform infrared spectroscopy, X‐ray diffraction, transmission electron microscopy, microscale combust…
Abstract A bundle of conducting polymer tubules was employed to build a biosensor of improved sensitivity. The tubule structure was able to provide larger enzyme encapsulating space per unit area of the sensor electrode compared to other immobilizing methods. The bundle structure was prepared by using electrochemical…
A series of pyrazinoporphyrazine macrocycles carrying externally appended 2-thienyl rings, represented as [Th(8)TPyzPzM], where Th(8)TPyzPz = tetrakis-2,3-[5,6-di(2-thienyl)pyrazino]porphyrazinato anion and M = Mg(II)(H(2)O), Zn(II), Co(II), Cu(II), or 2H(1), were prepared and isolated as solid air-stable hydrated spe…