Materials Literature
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We present a molecular dynamic simulation on the mechanical strength and fracture behavior of graphene grain boundaries (GBs). The intrinsic strength, critical failure strain, and failure mechanism of graphene GBs mainly rely on the temperature and inflection angle, whereas the Young's modulus does not vary significan…
Underwater spark-discharge methods have been widely utilized for experimental studies in many fields such as material processing, water treatment, and cavitation bubble dynamics. However, the precise control of bubble size using this method has been difficult. This poses challenges to better understand the complex int…
A series of isostructural octanuclear lanthanide complexes of general formula [Ln8(sao)4(μ3-OH)4(NO3)12(DMF)12] (Ln = Nd (), Sm (), Eu (), Gd (), Tb (), Dy (), Ho (), Er (); DMF = dimethylformamide) have been prepared via reactions of salicylaldoxime (saoH2), tetramethylammonium hydroxide (Me4NOH) with the appropriate…
The first examples of liquid crystalline pyrimidine-based photo-switchable bent-core monomers incorporating azobenzene as side arms linked with terminal double bonds as polymerizable functional groups are synthesized and characterized. Polarizing optical microscopy (POM), differential scanning calorimetry (DSC) and X-…
We report the design of a water-soluble, quaternized tamoxifen photoprobe and demonstrate its application in light-controlled induction of green fluorescent protein expression via a Cre-ER recombinase system.
A π-conjugated tetrathiafulvalene-fused perylenediimide (TTF-PDI) molecular dyad is successfully used as a solution-processed active material for light sensitive ambipolar field-effect transistors with balanced hole and electron mobilities. The photo-response of the TTF-PDI dyad resembles its absorption profile. Wavel…
Reversible addition–fragmentation chain transfer (RAFT) polymerization techniques were used to copolymerize an F-POSS macromer with methyl methacrylate (MMA) to produce novel copolymers that possess excellent wetting-resistant behaviour and are the first examples of covalently bound F-POSS nanocomposites for improved…
This paper presents the first fabrication of smart films with unique reversible double-stimulus responsive wettability. In this method, the ABC-type triblock copolymers synthesized through the sequential living radical polymerizations of 2-(diisopropylamino)ethyl methacrylate (DPAEMA), 2-hydroxyethyl methacrylate (HEM…
Wire-in-tube structures have previously been prepared using an electrospinning method by means of tuning hydrolysis/alcoholysis of a precursor solution. Nickel-zinc ferrite (Ni0.5Zn0.5Fe2O4) nanowire-in-nanotubes have been prepared as a demonstration. The detailed nanoscale characterization, formation process and magn…
An effective approach relying on in situ direct polycondensation to synthesize polyamide grafted with functional carbon nanotube (PA–FCNT) has been reported and the properties of PA nanocomposites were studied in this paper. The oxidized carbon nanotube (CNT–COOH), which was modified by the treatment of CNTs with mixe…
Mechanisms for interactions between ultrasound waves and materials vary as a function of input power of ultrasound. The objectives of this study were to compare mode of actions for ultrasound waves at different input powers. This study also describes various effects of ultrasound on materials at different input powers…
Fe–MFI prepared by reductive solution ion-exchange was investigated as catalyst for the oxidative dehydrogenation of propane with nitrous oxide, and a maximal propylene yield of ca. 14% could be obtained at the reaction temperature of 673 K. Accumulative acid post-treatments were performed on Fe–MFI and a gradual incr…
In the past decade, self-assembled vertical nano-heterostructures have drawn considerable attention because a high interface-to-volume ratio can be used to tailor or create functionalities. We have systematically investigated the magnetic properties of oxide heterostructures consisting of the CoFe2O4 nanopillars embed…
We report the fabrication and investigation of highly conducting and optically transparent ZnO thin films prepared by the spray pyrolysis technique. Undoped and Si-doped ZnO thin films were deposited on glass substrates at deposition temperatures between 250 °C and 500 °C from a precursor solution containing zinc acet…
The anomalous stability of magic-number metal clusters has been associated with closed geometric and electronic shells and the opening of HOMO-LUMO gaps. Despite this enhanced stability, magic-number clusters are known to decay and react in the condensed phase to form other products. Improving our understanding of the…
Monoclinic vanadium dioxide (VO2) particles are prepared via the thermolysis of a vanadyl ethylene glycolate precursor in an atmosphere of air. Monoclinic VO2 particles can be obtained at temperatures above 170 °C in an oven. The synthetic VO2 product exhibits high crystallinity and features a pure monoclinic phase an…
The present work addresses the synthesis of 1,4-bis(2-(4-hydroxyphenyl)-2-propyl)benzene based cyanate ester–silica hybrid (CE-SiO2) nanomaterials by an in situ sol–gel method. The nanomaterials are synthesized using a 1,4-bis(2-(4-cyanotophenyl)-2-propyl)benzene [CE] (organic phase) monomer and tetraethoxysilane (TEO…
The effect of niobium and vanadium additions (0.5 mass% and 2 mass%) on the as-cast microstructure and properties of hypoeutectic white cast iron containing 19 mass% Cr and 2.9 mass% C, has been examined. NbC carbides present in the structure of tested Fe–Cr–CNb alloys, due to their characteristic morphology, show hig…
Two M(II) tetranuclear complexes bridged only by azido, Mn4(N3)(7.3)Cl(0.7)L4 (1) and Co4(N3)8L4 (2) in which the four M(II) ions are precisely coplanar bridged only by six azido anions, were obtained by using 4,5-diazafluoren-9-one (L) as a corner ligand. Magnetic studies indicate that ferromagnetic coupling was cond…
Here we report a multifunctional supramolecular hydrogel based on host-guest inclusion for loading two different anticancer drugs with different controlled release profiles. The resulting hydrogels are characterized by possessing dual phase drug release behavior and producing a dose and cell type dependent synergetic…