Materials Literature
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A polyoxometalate of the Keggin structure substituted with Ru(III), (6)Q(5)[Ru(III)(H(2)O)SiW(11)O(39)] in which (6)Q=(C(6)H(13))(4)N(+), catalyzed the photoreduction of CO(2) to CO with tertiary amines, preferentially Et(3)N, as reducing agents. A study of the coordination of CO(2) to (6)Q(5)[Ru(III)(H(2)O)SiW(11)O(3…
Non-covalent DNA decorations on the basal planes of graphene oxide and reduced graphene oxide nanosheets are realized. The resulting DNA–carbon bioconjugates (DNA–GO or DNA–RGO) bearing multiple thiol groups tagged on DNA strands are then employed to scaffold the two-dimensional self-assembly of gold nanoparticles (Au…
Various functional biodegradable polymers were readily prepared based on novel cyclic carbonate monomers, acryloyl carbonate (AC) and methacryloyl carbonate (MAC), by combining ring-opening polymerization (ROP) and Michael-type conjugate addition. AC and MAC monomers were synthesized in four straightforward steps from…
Motivated by recent experiments by Yuri M. Zuev et al. [Phys. Rev. Lett. 102, 096807 (2009)], Peng Wei et al. [Phys. Rev. Lett. 102, 166808 (2009)], and Joseph G. Checkelsky et al. [Phys. Rev. B 80, 081413(R) (2009)], we calculate the thermopower of graphene incorporating the energy dependence of various transport sca…
Co-electrolysis of H2O and CO2 was studied in solid oxide cells (SOCs) supported by nickel-/yittria-stabilized zirconia (Ni/YSZ) electrode. Polarization characterization indicates that electrochemical reduction of both CO2 and H2O occurs during co-electrolysis. In parallel with the electrochemical reactions, the equil…
The formation of MoO(3) sheets of nanoscale thickness is described. They are made from several fundamental sheets of orthorhombic alpha-MoO(3), which can be processed in large quantities via a low cost synthesis route that combines thermal evaporation and mechanical exfoliation. These fundamental sheets consist of dou…
Au(25) clusters supported on hydroxyapatite oxidized styrene in toluene with 100% conversion and 92% selectivity to the epoxide, under optimum conditions and using anhydrous tert-butyl hydroperoxide (TBHP) as an oxidant.
The scientific study of gold nanoparticles (typically 1-100 nm) has spanned more than 150 years since Faraday's time and will apparently last longer. This review will focus on a special type of ultrasmall (<2 nm) yet robust gold nanoparticles that are protected by thiolates, so-called gold thiolate nanoclusters, denot…
In the title compound, [Ni(C(2)H(8)N(2))(3)](2)[Mo(CN)(8)]·5H(2)O, the Ni(II) ion is coordinated by six N atoms from three ethane-1,2-diamine ligands in a distorted octa-hedral geometry, while the Mo(IV) atom is coordianted by eight cyanide ligands. The Ni-N bond distances range from 2.1061 (18) to 2.1425 (18) Å. The…
The noncorrelated misorientation distributions found in a zirconium alloy after deformation, complete recrystallization and subsequent grain growth are first compared with those found in a quasi-isotropic hexagonal material ( i.e. associated with a random orientation distribution). They are then recalculated with resp…
Abstract Poly( p ‐dioxanone) (PPDO)/vermiculite (VMT) nanocomposites with exfoliated structure were prepared successfully by in situ intercalative polymerization of p ‐dioxanone (PDO) in the presence of organo‐modified vermiculite (OVMT) with the aid of ultrasonic action. The nano‐structure of the nanocomposites was e…
The effects of zeolite type, ion-exchanged level, and ion type on the electrical conductivity responses of poly(p-phenylene vinylene) (PPV), doped poly(p-phenylene vinylene) (dPPV) and zeolite composites under CO exposures were investigated. The electrical sensitivity of dPPV/Cu+-ZSM5(Si/Al = 23) system shows a negati…
A Scanning Electron Microscopic study on the fish scale of Cyprinus carpio communis (freshwater carp), depicts remarkable structural and compositional characteristics which may be used as inspiration for novel biomaterial design. The fracture surface structure and sintered fish scale reveals an osseous layer on its do…
Der Kristallisationsverlauf in einem trocknenden Tropfen, der DNA-bedeckte Nanopartikel enthält, wurde mit Kleinwinkelröntgenbeugung (SAXS) untersucht; das Bild zeigt eine Reihe von eindimensionalen SAXS-Mustern als Funktion der Zeit. Es entstehen ungewöhnliche Nanopartikel-Überkristalle, die weich und elastisch sind…
Using neutron scattering and the pair-density-function analysis, we investigated, the local atomic structure of the ferrimagnetic dielectric ${\text{Tb}}_{3}{\text{Fe}}_{5}{\text{O}}_{12}$ garnet. Pronounced magnetic diffuse scattering is observed at high temperatures that gradually decreases with cooling as the Tb sp…
We present the results of supercell DFT calculations on the adsorption properties of Au atoms and small clusters (Au(n), n < or = 5) on a SiO(2)/Mo(112) thin film and on the same system modified by doping with Li atoms. The adsorbed Li atoms penetrate into the pores of the silica film and become stabilized at the inte…
Abstract A porous plasma stamp has been developed allowing selective plasma treatment and coating of flat surfaces by using a dielectric barrier discharge arrangement at atmospheric pressure. The stamp consists of a porous sinter metal plate covered with photoresist. The photoresist is structured to form cavities in w…
Die Desulfurierung von meso-Trithienylsubporphyrinen eröffnete den Zugang zu den Titelverbindungen (siehe Schema). Die Oxidation eines Alkylsubstituenten von 1 in Benzylstellung ergab ein Valeryl-substituiertes Subporphyrin, dessen optische und elektrochemische Eigenschaften stark von denen anderer Subporphyrine abwei…
Abstract In this study the curing kinetics of epoxy based on the diglycidyl ether of bisphenol A (DGEBA), 4,4′‐diaminodiphenyl sulfone (DDS) as a hardener, and SiO 2 /TiO 2 (70:30) as a nanofiller was investigated by nonisothermal differential scanning calorimetry (DSC). The effects of different weight contents of SiO…
Epoxy/multiwall carbon nanotube (MWNT) composites were prepared using two different mixing techniques (i.e., sonication and planetary mixing) followed by curing. Different concentrations (0.25-1.25 wt%) of MWNT were incorporated into the epoxy. The mechanical properties of the epoxy/MWNT nanocomposites were characteri…