Materials Literature
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A detailed quantitative study of the pnictide composite superconductor (CS) Ba0.6K0.4Fe2As2 is presented in the frame-work of the recently derived set of generalized BCS equations. Invoking multiple Debye temperatures to take into account anisotropy of the CS, we address the current experimental data on its Tc and the…
In this study, a novel polymer of curcumin is synthesized by sulfonation and the incorporation of aliphatic groups to the polymeric structure. It undergoes efficient fluorescence quenching in the presence of hemin and acts as a selective biosensor for the latter. The quenching efficiency increases significantly, up to…
A series of new polyazomethines containing furan moieties was synthesized by polycondensation of bifuranic diamine monomers with commercially available aromatic dialdehydes viz., terephthaldehyde (TPA), isophthaldehyde (IPA). Inherent viscosities and number average molecular weights of polyazomethines were in the rang…
Electrochromics are a promising avenue for energy savings in tropical climates where heating of buildings is largely by transmission of infrared light through windows, causing 40% of their electrical demand to be used on air-conditioning. One technique to improve the electrochromic properties of WO 3 films is to dope…
Electrochemical and in situ spectroelectrochemical behaviors and electrocatalytic reduction of molecular oxygen with titanyl phthalocyanines (TiPc) bearing 3,4-(methylenedioxy)-phenoxy substituents were performed in aprotic solvents. Multi electrons and metal-based and ring-based redox processes of TiPcs indicate thei…
We have prepared photomagnetic Langmuir-Blodgett films composed of an amphiphilic azobenzene and a magnetic polyoxometalate. The obtained film possesses a well-organized layered structure where polyoxometalate anions are sandwiched by azobenzene cations in a single-layered manner. Reversible photoisomerization of azob…
Well-dispersed Ag@rubrene core–shell nanostructures have been fabricated by an in situ chemical reaction route. The reduction in cationic precursors of rubrene˙+ by Ag atoms generated neutral rubrene molecules which had a local high concentration to realize the site-specific nucleation, and followed by the in situ gro…
CdSe host nanocrystals (NCs) doped with Eu2+ ions are synthesized in an aqueous solution using thioglycollic acid as a stabilizer. The structures, elements, shape, and spectral properties of these nanocrystals are investigated. The obtained CdSe:Eu2+ nanocrystals are consistent with the zinc blende crystal structure,…
A well known perovskite-type material, LaFeO3, was prepared by citrate–nitrate auto-combustion synthesis and used to formulate a new in situ approach for the analytical evaluation of the redox properties of this class of material. Carbon monoxide was used as a reducing agent-probe, while molecular oxygen was used as a…
In this work, the doping of n-layer graphenes with C60 is investigated via Raman spectroscopy. The results indicate that C60 can induce hole doping in graphenes, and that the doping level is closely related to the layer number of the graphenes. Moreover, the level of doping in the hybrid of C60 on graphene (C60/G) is…
We investigated the correlations among the structure, Rayleigh scattering, and single-molecule surface-enhanced Raman scattering (SERS) of DNA-tethered Au-Ag core-shell nanoparticles, especially in dimer and trimer forms. For the optimal correlation measurements, accurate information on the position of the nanoparticl…
High quality copper indium selenide (CuInSe2) nanocrystals were synthesized solvothermally at low temperature (180 °C) using selenite salts (SeO32−) as a dual source for metal and chalcogen, and dimethylformamide (DMF) as one of the solvents and the reducing agent. In order to find out the best solvent combinations fo…
Magnetic resonance plays a leading role in the management of oncology patients, providing superior contrast resolution and greater sensitivity compared with other techniques, which enables more accurate tumor identification, characterization and staging. Contrast agents are widely used in clinical magnetic resonance i…
Self-cleaning catalytic coatings were developed for use in thermal applications, such as domestic oven windows. Based on a modified citric acid complexation method, oxide coatings were synthesized on commercial glass substrates. Their performance was evaluated in the oxidation of a layer of pre-oxidized lipid at 250 °…
Template growth and catalytic growth are two typical mechanisms for the solution-chemistry synthesis of one-dimensional (1D) II-VI semiconductor nanomaterials. Here, we systematically demonstrate the competition relationship between them by tuning the synthesis of 1D ZnS nanostructures in different chain-length primar…
Abstract We propose a behavioral circuit model to estimate transient optical responses of an active‐matrix liquid crystal display (AMLCD). We apply it to twisted‐nematic, patterned vertical alignment, and in‐plane switching AMLCDs to verify our model's universality. To obtain more accurate simulation results, we propo…
In Sweden, the dominating source for emissions of degradable organic substances to water is the pulp and paper industry. The organic substances increase oxygen consumption in the recipient which su ...
The thermal decomposition kinetics of strontium nitrate, Sr(NO3)2 was studied by thermogravimetry using non-isothermal experiments. For the kinetic analysis, the TG/DTG data obtained in the temperature range 30-850 C at different heating rates (5, 10, 15 and 20 K/min) in the nitrogen atmosphere were processed by model…
AB ST R ACT : Six samples of ‘Vermiculite’ have been studied to investigate the mechanism of its well known but poorly understood property to exfoliate. The samples were analysed quantitatively by XRD to determine their precise mineralogical composition. Electron microprobe methods, including elemental mapping of nati…
Based on density functional theory, the single O2 and CO adsorption on pristine and palladium (Pd) doped graphene are studied using first-principles calculations. By calculating the system adsorption energy, charge transfer, band structure and density of states (DOS), we find that compared with O2 and CO adsorbed on t…