Materials Literature
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The ultrafast Z→E and E→Z photoisomerisation dynamics of 5,6-dihydrodibenzo[c,g][1,2]diazocine (1), the parent compound of a class of bridged azobenzene-based photochromic molecular switches with a severely constrained eight-membered heterocyclic ring as central unit, have been studied by femtosecond time-resolved spe…
Sulfated zirconia was employed as catalyst for fast pyrolysis of cellulose to prepare levoglucosenone (LGO), a very important anhydrosugar for organic synthesis. The yield and the selectivity of LGO were studied in a fixed-bed reactor at different temperatures and cellulose/catalyst mass ratios. The experiments of cat…
This study compared the characteristic properties of the yarns produced on three different yarn spinning systems with the same material. These spinning systems are conventional ring, compact, and compact-jet. Compact-jet is a proper combination of compact and jetring-spinning systems and therefore it is less known. On…
Use of silver nanoparticles (SNPs) is increasing in a large number of consumer products. Thus, the possible build-up of the nanoparticles in the environment is becoming a major concern. Aeromonas punctata isolated from sewage showed tolerance to 200 μg/ml SNPs. The growth kinetics data for A. punctata treated with nan…
A novel orange-yellow emitting Sr3Al2O5Cl2:Eu(2+), Tm(3+) phosphor with bright and long persistent luminescence (LPL) has been newly developed. The incorporation of Tm(3+) into the Sr3Al2O5Cl2:Eu(2+) as an auxiliary activator dominates its long persistent luminescence and thermoluminescence characteristics to a large…
There has recently been much work on using nanowires for various applications. Examples include photodetectors and photovoltaics. One of the main reasons for this stems from the nanowire’s asymmetric shape, which, in principle, facilitates the ready band transport of carriers. As a consequence, effective mobilities sh…
The transport and complex optical properties of the electron-doped iron-arsenic superconductor ${\text{BaFe}}_{1.85}{\text{Co}}_{0.15}{\text{As}}_{2}$ with ${T}_{c}=25\text{ }\text{K}$ have been examined in the Fe-As planes above and below ${T}_{c}$. A Bloch-Gr\"uneisen analysis of the resistivity yields a weak electr…
Warp knitted fabrics are widely used in medical and technical applications, as well as for clothing textiles. To predict their properties, it is useful to have knowledge about the yarn geometry and the yarn interactions within these fabrics. The geometrical modelling of warp knitted structures from single bed knitting…
Abstract This article demonstrates the properties of open‐cell flexible polyurethane foams incorporating multi‐walled carbon nanotubes. Three different types of highly functionalized nanotubes having carboxyl, hydroxyl and amide functional groups were synthesized. Neat polyurethane foam and three nanocomposite foams f…
Carbon fibers were fabricated from electrospun poly(vinyl alcohol) (PVA) nanofibers. Electrospun PVA nanofibers were treated with iodine vapor for different periods, subsequently carbonized at different temperatures, and the structural changes of the PVA nanofibers were analyzed. The nanofibers iodinated at 80 °C for…
Half-metallic antiferromagnets (HMAFMs) have been proposed theoretically long ago but have not been realized experimentally yet. Recently, a double perovskite compound, ${\text{LaSrVMoO}}_{6}$, has been claimed to be an almost real HMAFM system. Here, we report detailed experimental and theoretical studies on this com…
Biocompatible and biodegradable microcapsules were fabricated by the covalent assembly of polysaccharides and their derivatives. The formation of Schiff's bases between polysaccharides and their derivatives enabled the microcapsules' autofluorescence properties and pH-responsivity. These polysaccharide microcapsules h…
Natural and synthetic gel-like materials have featured heavily in the development of biomaterials for wound healing and other tissue-engineering purposes. More recently, molecular gels have been designed and tailored for the same purpose. When mixed with, or conjugated to therapeutic drugs or bioactive molecules, thes…
Abstract The role of the substrate temperature on the structural, optical, and electronic properties of ZnO thin films deposited by spray pyrolysis using a zinc acetate precursor solution is reported. Analysis of the precursor compound using thermogravimentry and differential scanning calorimetry indicates complete de…
Stepping up: A two-step magnetic spin transition with accompanying structural phase transitions is reported for the first time for FeIII. The transitions are observed at 187 K and 90 K on cooling with a hysteretic transition recorded upon heating during the first crossover at 106 K. The intermediate phase persists ove…
In this paper we present a neutron diffraction in situ study of the thermal evolution and high-temperature structure of layered cobaltites Y (Ba, Sr)Co(2)O(5 + δ). Neutron thermodiffractograms and magnetic susceptibility measurements are reported in the temperature range 20 K ≤ T ≤ 570 K, as well as high-resolution ne…
We have expanded the ligand knowledge base for monodentate P-donor ligands (LKB-P, Chem. Eur. J. 2006, 12, 291−302) by 287 ligands and added descriptors derived from computational results on a gold complex [AuClL]. This expansion to 348 ligands captures known ligand space for this class of monodentate two-electron don…
The behavior of the low-frequency electromagnon in multiferroic ${\text{DyMnO}}_{3}$ has been investigated in external magnetic fields and in a magnetically ordered state. Significant softening of the electromagnon frequency is observed for external magnetic fields parallel to the $a$ axis $(B\ensuremath{\parallel}a)$…
Ab initio studies have theoretically predicted room-temperature ferromagnetism in crystalline ${\text{SnO}}_{2}$, ${\text{ZrO}}_{2}$, and ${\text{TiO}}_{2}$ doped with nonmagnetic element from the 1A column as K and Na. Our purpose is to address experimentally the possibility of magnetism in both ${\text{Sn}}_{1\ensur…
The triple “magnetic−transport−structural” transition versus temperature in three series of “114” cobaltites, Y 1− x Yb x BaCo 4 O 7, Y 1− x Ca x BaCo 4 O 7, and Yb 1− x Ca x BaCo 4 O 7, has been studied using magnetic, transport, and differential scanning calorimetric measurements. The effect of the size mismatch σ 2…