Materials Literature
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This study examined the formation of nanofiber hydrogels at neutral pH for 16 types of peptides with different net charges, hydrophobicities, and degrees of polymerization. The peptides formed various hydrogels depending on the arrangement of charged amino acids in the antiparallel β ‐sheet structure. Circular dichroi…
A new strategy was explored for the visual determination of Cu(2+) using copper-catalysed in situ formation of Ag nanoparticles. In this method, only common reagents were used and the pre-synthesis and modification of nanoparticles are avoided. Ag(+) can form a milk-white suspension (AgBr) with Br(-) in an aqueous sol…
A blue phase (BP*) liquid crystal mixture was stabilised via doping with three different types of colloidal particles, smaller hexane thiolate-capped gold nanoparticles (NP1) with a size around 2.2 nm, larger oleylamine capped gold nanoparticles (NP2) with an average size of 13.2 nm, and manganese oxide nanoparticles…
A new approach to manufacture of metallic-intermetallic laminate (MIL) composites is realized: explosive welding of a package of titanium and aluminum sheets with the subsequent sintering without a hydraulic press. Sheets of the titanium (thicknesses of 0.5 and 0.6 mm), aluminum (thickness of 1.0 mm) were used. Packag…
A generic in situ method for producing triple component hydrophobic inorganic–organic nanocomposite particles, using a combination of modified emulsion templating and freeze-drying, is presented. Model nanocomposite particles have been developed bearing up to three hydrophobic ingredients chosen from polystyrene, oil…
Porous‐structured nickel oxide (PsNiO) was obtained through the oxidization of a nickel thin film. The nickel thin film was deposited using the pulsed laser deposition (PLD) method on a nickel foil as a substrate. The results show uniform PsNiO after the oxidization of the nickel thin film at 750 ∘ C for 1 h. X‐ray di…
This study presents the composites prepared by melt blending based on high-density polyethylene, containing various amounts of kenaf fiber loadings and polyethylene-grafted maleic anhydride (PE-g-MA) in an internal mixer were prepared and investigated. Fourier transform infrared spectroscopy was used to characterize b…
Regioselectively brominated BODIPYs were shown to undergo nucleophilic substitution and Sonogashira coupling reactions with a one-pot procedure, yielding diversely substituted fluorophores.
Monodisperse closed-pore silica spheres with small pore diameters have been prepared through a simple self-assembly approach. The closed-pore silica spheres were synthesized in near neutral conditions, using cetyltrimethyl ammonium bromide (C16TAB) as a template. The products show a spherical morphology with a uniform…
A novel oligo(p-phenyleneethynylene) with cholesterol on its side chains (CHOL-OPE) was designed and synthesized. Film 1 and Film 2 were fabricated by immobilizing, separately, the oligomer as prepared and its control, OPE, which contains no side chains, on glass plate surfaces via utilization of a self-assembled mono…
Bright photoluminescent mesostructured silica nanoparticles were synthesized by the incorporation of fluorescent cyanine dyes into the channels of MCM-41 mesoporous silica. Cyanine molecules were introduced into MCM-41 nanoparticles by physical adsorption and covalent grafting. Several photoluminescent nanoparticles w…
The stress tensor dependence of the polarized Raman spectrum of the barium titanate (BaTiO3) tetragonal structure has been theoretically elucidated and the phonon deformation potential (PDP) constants of its A1(TO) and E(TO) vibrational modes measured by means of a spectroscopic analysis of single-crystalline samples…
The synthesis of polymer-derived nanoporous silicon carbide with monodisperse spherical pores is described. An incipient wetness method was used to fill the interparticle voids of microemulsion-derived silica nanospheres with the polycarbosilane SMP-10. The spheres have a very narrow diameter distribution in the mesos…
Local Electronic Properties of the Passive Film on Nickel Studied by Scanning Tunneling Spectroscopy, Massoud, Toni, Maurice, Vincent, Wiame, Frédéric, Klein, Lorena H., Seyeux, Antoine, Marcus, Philippe
Ordered microporous films were obtained via evaporative assembly from amphiphilic random copolymers of poly(acryloyl chloride) with self-crosslinked components. The quality and morphology of the porous structures were found to be highly dependent on the ratio of good solvent for the polymer (e.g. acetone) and nonsolve…
We report on strontium doped dibismuth-nonaoxoaluminate(III) produced at 1023 K. Partial substitution of bismuth by strontium in the structure yields oxygen vacancies for charge balance. Introducing oxygen vacancies rearranged the associated Al2O7 double-tetrahedra forming “Al3O10” tri-clusters which were identified b…
Micro/nano encapsulation technology has acquired considerable attention in the fields of drug delivery, biomaterial engineering, and materials science. Based on recent advances in chemical particle synthesis, we propose a primitive model of an encapsulation system produced by the self-assembly of Janus oblate spheroid…
Poly(quinoxaline-2,3-diyl)s bearing pyrene pendants exhibited solvent-dependent changes of the fluorescence color (blue and green) and the screw-sense selectivity (left-handed and racemic) in chloroform and 1,1,1-trichloroethane, respectively.
An undeca-nuclear nickel substituted POM, namely [Ni(H(2)O)(6)][Ni(11)(PW(9)O(34))(2)(IDA)(3)(en)(2)(Hen)(2)(OH)(6)]·(H(2)O)(7)·(H(2)en)(2) (1) (en = 1,2-ethylenediamine, H(2)IDA = iminodiacetic acid), was synthesized through hydrothermal reaction of Na(6)PW(9)O(34), en, H(2)IDA and NiCl(2)·6H(2)O. Single-crystal stru…
Room temperature Raman spectra of both PbFe0.5Nb0.5O3 (PFN) single crystal and ceramics were found to contain 14 bands, namely 64, 130, 200, 265, 427, 488, 560, 703, 785, 861, 971, 1123, 1236, and 1383 cm−1. For the first time distinct anomalies in the temperature dependences of frequency and/or full width at half max…