Materials Literature
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In order to study the capability of pyrazinium salt derivatives to act as photo-initiators of epoxide monomers, benzyl pyrazinium hexafluoroantimonate (BPH), benzyl 3,5-dimethyl pyrazine hexafluoroantimonate (BDH) and benzyl quinoxalinium hexafluoroantimonate (BQH) were synthesized by the Menschutkin reaction of benzy…
ZnS and ZnS/TiO 2 were prepared by chemical deposition. The prepared photocatalysts were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray (EDX), and transmission electron microscopy (TEM). The generation of reactive oxygen species was detected by monitoring the oxid…
Abstract A acceptor–donor–acceptor (A–D–A) molecule based on a silole‐modified pentathiophene (SiPTA) electron‐donor unit and two diketopyrrolopyrrole (DPP) acceptor units, DPP2(SiPTA), was designed and synthesized. An unsymmetrical molecule with D–A structure, DPP‐SiPTA, was also synthesized for comparison. Both mole…
Abstract 2,6-Dideoxy-3-O-methylpyranosylillustrol (3) was stereoselectively synthesized through the oxidative construction of a cage-like DEF ring moiety and stereoselective glycosylation of a 2,6-dideoxysaccharide derivative.
Spherical NiO-YSZ particles were synthesized by ultrasonic spray pyrolysis (USP). The morphology of the synthesized parti-cles can be modified by controlling parameters such as precursor pH, carrier-gas flow-rate, and temperature of the heating zone. The synthesized spherical NiO-YSZ particles have rough surface morph…
Abstract The characterization of the structure and internal dynamics of biomolecules is essential to understanding their biological function. Neutron scattering probes similar time‐ and length‐scales to molecular dynamics simulation. Hence, simulation models of biomolecules have become invaluable in the interpretation…
Polyvinyl acetate (PVAc) adhesives present several advantages: ready to use, short setting time, flexible joint, easy to clean and long storage life. On the other hand, formaldehyde-based adhesives are less expensive and give a rigid bond.In this work, the combination of a PVAc glue and UF resin for surfacing MDF with…
Dye-sensitized solar cells (DSSCs) were synthesized using a 0.25 cm 2 area of a TiO 2 nanoparticle layer as the electrode and platinum (Pt) as the counter electrode.The TiO 2 nanoparticle layers (12 to 22 µm) were screen-printed on fluorine-doped tin oxide glass.Glancing angle X-ray diffraction results indicated that…
LDHs(layered double hydroxides) are of use adsorbent to remove heavy metals, micro-organic pollutants as well as high concentration of phosphorus from wastewater to low concentration of surface water without pH adjustments. This study examined the generation condition of LDHs saturated with phosphorus. Less than 20% r…
A single layer ultrafiltration(UF) ceramic membrane was prepared using boehmite sol. Boehmite was synthesized using a typical sol-gel process with optimization of the viscosity, pH, molar ratio of aluminum isopropoxide(AIP) and HNO 3 . Boehmite sol was coated on a microfiltration(MF) support using the dip-coating meth…
The performances of organic optoelectronic devices, such as organic light emitting diodes and polymer solar cells, have rapidly improved in the past decade. The stability of an organic optoelectronic device has become a key problem for further development. In this paper, we report one simple encapsulation method for o…
In this article, a new type of superimposing morphology comprised of a periodic nanostructure and a random structure is proposed for the first time to enhance the light scattering in silicon-based thin film solar cells. According to the framework of the Reyleigh—Sommerfeld diffraction algorithm and the experimental re…
New interventions against infectious diseases require a detailed knowledge and understanding of pathogen–host interactions and pathogeneses at the molecular level. The combination of the considerable advances in systems biology research with methods to explore the structural biology of molecules is poised to provide n…
Pt-based alloy catalysts are of significant importance in fuel cells due to enhanced electrode reactivity and selectivity. Designing alloy surfaces suitable for catalyst via first-principles predictions has long played a central role in identifying promising candidates. We propose surface design for polymer electrolyt…
We present a new and facile method for polydimethylsiloxane (PDMS) casting by dip-coating the master molds in an aqueous solution of dopamine. A poly(dopamine) film formed by self-polymerization of dopamine is used as the surface anti-adhesion coating for PDMS de-molding. Different master molds, such as metal, silicon…
Temperature coefficient of resistance (TCR), magneto-resistance (MR) and magneto-caloric properties of polycrystalline pristine Pr2/3Sr1/3MnO3 (PSMO) and its composites with PdO (10–30 mole %) (PSMO:Pd) have been studied. Rietveld refinement of their x-ray diffraction (XRD) patterns confirms their single phase crystal…
Resonant magnetic scattering of circularly polarized synchrotron X-rays has revealed the site-specific magnetic moments at two non-equivalent Fe ion sites in Fe3O4. The energy-dependent peaks for the 026 and 266 reflections were attributed ferrimagnetically to the e and t 2 energy levels of Fe 3d at the A site, and to…
We report an electrospinning approach to producing P b T i O 3 polycrystalline nanofibers. The influence of the polymer concentration in the solution on the obtainable P b T i O 3 nanofiber morphology was investigated. Nanofibers were characterized by high‐resolution scanning electron microscopy ( HR ‐ SEM ) and Raman…
In this article, we present a time-dependent model that enables us to describe the dynamic behavior of pulsed DC reactive sputtering and predict the film compositions of VOx prepared by this process. In this modeling, the average current J is replaced by a new parameter of Jeff. Meanwhile, the four species states of V…
A tunable infrared plasmonic polarization filter is proposed and investigated in this paper. The filter is based on the sandwich absorption structure which consists of three layers. The top layer is an array of asymmetrical cross resonator. The middle and bottom layers are dielectric spacer and metal film respectively…