Materials Literature
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The compound Na3SO4Cl X (X = Ce(3+), Eu(3+) or Dy(3+)) prepared by the wet chemical method was studied for its photoluminescence (PL) and energy transfer characteristics. The PL from Na3 SO4 Cl:Ce(3+) shows strong emission at 322 nm at an excitation of 272 nm. Therefore, an efficient Ce(3+) → Dy(3+), Eu(2+) → Dy(3+) a…
Abstract Colloidal dispersions of hybrid nanoparticles with silica sol as the supporter (PKSol) were prepared by supporting aromatic phosphate on silica sol via a chemical action with γ-aminopropyltrimethylsilane (KH550) as a linker in wet process for the first time. Dynamic light scattering (DLS) demonstrated that hy…
Abstract The optimum pretreatment method for a Pt‐based spent catalyst for the removal of exhaust organic gases was examined. Two different pretreatment procedures with gas and aqueous solution were evaluated. Results obtained from the catalytic combustion of trace CH 4 demonstrate that air pretreatment has a slightly…
Abstract The backside‐ligand modulation strategy to enhance the substrate binding property of Pd clusters is reported. The benzene or naphthalene binding ability of Pd 3 or Pd 4 clusters is enhanced significantly by the backside cyclooctatetraene ligand, leading to the formation of the first solution‐stable benzene‐ o…
The self-assembly of block copolymers in thin films provides an attractive approach to patterning 5-100 nm structures. Cross-linking and photopatterning of the self-assembled block copolymer morphologies provide further opportunities to structure such materials for lithographic applications, and to also enhance the th…
A facile seed regrowth method is presented for the preparation of a new type of colloidal dendritic silica nanoparticles (DSNPs) with unique Konpeito-like morphology and high surface area (∼400 m(2) g(-1)). Growth of silica nanoprotrusions on the surfaces of colloidal silica nanoparticles proceeds by hydrolysis and po…
ABSTRACT Shape‐memory polymers (SMPs) are an emerging class of active polymers that can be used on a wide range of reconfigurable structures and actuation devices. In this study, an epoxy‐based SMP was synthesized, and its thermomechanical behaviors were comprehensively characterized. The stress–strain behavior of the…
The accelerating effect of terminal n ‐alkyl groups (TAGs) on the non‐isothermal crystallization of poly( L ‐lactide)/poly( D ‐lactide) blends increased with TAG length in the low temperature range below 100 °C and that on isothermal stereocomplex crystallization of poly( L ‐lactide)/poly( D ‐lactide) blends became ma…
The role of sulphuric acid (H 2 SO 4 ) in fabrication graphene oxide besides as intercalant has not been well addressed. In this work, Raman spectroscopy is used to monitor structural evolution in chemical vapor deposition (CVD) graphene chemically oxidized by dilute H 2 SO 4 . From the analysis of Raman spectra of ox…
Abstract A simple chemical approach was employed to reduce graphene oxide in order to fabricate electrode coatings in close correlation with industrial production standards for supercapacitors. The morphology, structure, thermal stability and the residual oxygen functional groups in chemically reduced graphene oxide w…
Abstract Dibromomethylene‐containing monomer with a tetrafluorobenzene central unit was synthesized using 2,3,5,6‐tetrafluoro‐1,4‐bis(4‐methylphenoxy)benzene as a starting material. This approach enabled preparation of several fluorinated poly(arylene ether)s containing isomeric fragments, with or without allyl or ace…
Two-dimensional covalent organic frameworks (COFs), with their predictable assembly into ordered porous crystalline materials, tunable composition, and high charge carrier mobility, offer the possibility of creating ordered bulk heterojunction solar cells given a suitable electron-transporting material to fill the por…
The sessile drop method was used for the study of the wetting of steel by Al 4043 alloys in cold metal transfer process. The moving of triple line was determined by the reaction at interface rather than the wettability of reaction product. The evaporation of Zn coating for galvanised steel induced instability of wetti…
A series of side-chain liquid crystal (LC) polysiloxanes were synthesised with Poly(methylhydrogeno)siloxane, 4ʹ-(undec-10-enoyloxy) biphenyl – 4 – yl 4- (trifluoromethyl) benzoate (Mth) and a chiral nematic (N*) LC monomer 1-allyl 10-(cholesteryl)-decanedioate (Mch). The chemical structures and LC properties of the m…
This work focuses on analyzing the barrier properties of novel Bromobutyl (BIIR)-Polyepichlorohydrin (CO) rubber nanocomposites and developing a unique model to ease the understanding of the water vapor transmission rate (WVTR) properties.Air permeability, WVTR and morphology of BIIR-CO nanocomposites were investigate…
In the field of interacting electron systems the Mott metal-to-insulator (MI) transition represents one of the pivotal issues. The role played by lattice degrees of freedom for the Mott MI transition and the Mott criticality in a variety of materials are current topics under debate. In this context, molecular conducto…
We applied Vopsaroiu's model to (Bi,Pr)(Fe,Mn)O 3 (BPFM) and Pb(Zr,Ti)O 3 (PZT) ferroelectric thin films fabricated by chemical solution deposition. The temperature dependences of the saturation polarization and the coercive field were measured in a low‐temperature region from 100 to 200 K. The saturation polarization…
We report on the formation of Ge/Si quantum dots with core/shell structure that are arranged in a three-dimensional body centered tetragonal quantum dot lattice in an amorphous alumina matrix. The material is prepared by magnetron sputtering deposition of Al2O3/Ge/Si multilayer. The inversion of Ge and Si in the depos…
Abstract: Lime (Citrus aurantifolia) contains an acid agent which can affects the surface hardness of composite. Change of surface hardness of composite is caused by infiltration of water containing the acid agent that affects the bonding of matrix to filler of composite.This study aimed to determine the effect of imm…
The carbo-mer of the para-quinodimethane core is stable within in a bis(9-fluorenylidene) derivative. Oxidation of this carbo-quinoid with MnO2 in the presence of SnCl2 and ethanol affords the corresponding p-bis(9-ethoxy-fluoren-9-yl)-carbo-benzene. The latter can be in turn converted back into the carbo-quinoid by r…