Materials Literature
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Here, we report the fabrication of a curcumin-releasing porous silk fibroin scaffold by simple mixing of fibroin solution (aqueous) with curcumin solution (organic) followed by freeze-thaw of the mixture. The scaffold has a uniform pore distribution with an average pore size of ~115 μm and a degree of swelling of 2.42…
Abstract Bismaleimide‐triazine (BT) resin/hexagonal boron nitride (h‐BN) composites are prepared, and the effects of h‐BN content on the thermal and dielectric properties are studied in the view of structure–property relationship. It is found that the introduction of the BN in the BT resin dramatically improve the the…
Nano-sized magnesium ferrite was synthesised using co-precipitation and sol-gel techniques. Structural characterisation was performed using X-ray diffractometer (XRD), Fourier transform infrared (FTIR) spectrometer and scanning electron microscope. XRD analysis reveals the prepared samples are single phasic without an…
Disproportionation of benzyl alcohol has been identified as the source of toluene formation in the solvent free oxidation of benzyl alcohol using supported gold palladium catalysts. There is a slight increase in the disproportionation reaction, and hence the toluene selectivity, when this reaction is performed in a co…
Reported are quantitative studies of the energy transfer from water-soluble CdSe/ZnS and CdSeS/ZnS core/shell quantum dots (QDs) to the Cr(III) complexes trans-Cr(N(4))(X)(2)(+) (N(4) is a tetraazamacrocycle ligand, X(-) is CN(-), Cl(-), or ONO(-)) in aqueous solution. Variation of N(4), of X(-), and of the QD size an…
Solid solutions of BiGa x M 1– x O 3 ( M = Cr, Mn, and Fe) were prepared using the high-pressure high-temperature method at 6 GPa and 1700 K ( M = Cr and Fe) and 1300 K ( M = Mn). The formation of a large family of polar materials with R 3 c and Cm symmetries was found. Crystal structures were studied with laboratory…
Thermoplastic elastomer (TPE) from ethylene vinyl acetate (EVA) and synthetic general purpose rubber, polybutadiene rubber (BR), which can improve set, wear, and tear properties of virgin EVA without any coloring problem, was developed. EVA-BR blend ratio and processing parameters were optimized based on physicomechan…
Abstract In this article, polyamide (PA) 6 was dissolved in 98 wt % formic acids with a concentration of 13 wt %, and then the electrospun PA 6 nanofiber membranes were prepared. The filtration potential of the nanofiber membranes were firstly analyzed based on the scanning electron microscope images and pore size mea…
Molecular dynamics simulations based on many-body interatomic potentials are conducted to investigate the formation of unidirectional ripples in zigzag and armchair graphene nanoribbons with clamped edges under in-plane uniform strain. The ripple formation is found to be a result of buckling under in-plane membrane fo…
Simultaneous thermal analysis [i.e., thermogravimetry (TG) and differential scanning calorimetry (DSC)] is frequently used in materials science applications and is increasingly being used to study soil organic matter (SOM) stability. Yet, important questions remain, especially with respect to how the soil mineral matr…
Flax fibres are being considered as an environmentally friendly alternative to synthetic fibres in fibre-reinforced polymer composites due to their low density, biodegradability, and high mechanical strength. Previous work has found that the surface properties of natural fibres can be modified by chemical treatment an…
The reversible switching of a water-soluble spiropyran compound is recorded over 1 ns by means of femtosecond vis-pump/vis- and IR-probe spectroscopy under aqueous conditions. Our investigations reveal that the photochemical conversion from the closed spiropyran to the open merocyanine takes 1.6 ps whereas the reverse…
A reduced graphene oxide field-effect transistor (R-GO FET) device has a uniform self-assembled and networked channel of R-GO nanosheets that are highly responsive to physical stimuli such as temperature variations and infrared irradiation. The charge-transport mechanisms of the networked R-GO thin film include charge…
In this work, we report the creation of a grooved surface comprising 3 μm grooves (height ~4 μm) separated by 3 μm from each other on a silicon wafer by photolithography. The grooved surface was then modified chemically with a fluorosilane layer (FOTS). The surface property was studied by both static and dynamic conta…
Klein ist wunderschön: Das ringverengte Porphyrin-Derivat Norcorrol wurde effizient an einem Nickel-Templat synthetisiert. Der resultierende Norcorrol-Komplex ist zwar nach der Hückel-Regel deutlich antiaromatisch, erwies sich aber als stabil und konnte durch Oxidation in einen aromatischen Oxacorrol-Komplex überführt…
The cold-drawn, programmed shape memory polymer (SMP) fibers show excellent stress recovery property, which promotes their application as mechanical actuators in smart material systems. A full understanding of the thermomechanical-damage responses of these fibers is crucial to minimize the trial-and-error manufacturin…
This article describes a sol-gel route for nanomaterials production, without volatile organic compounds (VOCs). These materials are simply obtained by mixing a silica oligomer with a non-ionic surfactant under ultrasonic agitation. The surfactant acts as sol-gel transition catalyst and also as an agent that directs th…
By using a combination of theoretical and experimental techniques, it is demonstrated that functionalized graphene sheets (FGS) can function as a new class of molecular templates to direct the nucleation, crystalline phase transition, and self-assembly process of surfactant micelles and metal oxides. Novel, three-dime…
We report on the quantum yield, photoluminescence (PL) lifetime, and ensemble photoluminescent stability of highly monodisperse plasma-synthesized silicon nanocrystals (SiNCs) prepared though density-gradient ultracentrifugation in mixed organic solvents. Improved size uniformity leads to a reduction in PL line width…
Three phosphorescent cocrystals were prepared by 1,4-diiodotetrafluorobenzene and fluorene (cocrystal 1 ) and its heterocyclic analogues, dibenzofuran (cocrystal 2 ) and dibenzothiophene (cocrystal 3 ), based on C–I···π halogen bonding, and C–H···π, C–H···I, or C–H···F hydrogen bonding as well as F···F and S···S conta…