Materials Literature
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Abstract Li 2 O–CaF 2 –P 2 O 5 glasses mixed with different concentrations of NiO (ranging from 0 mol% to 2.0 mol%) were crystallized. The samples were characterized using X‐ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy and differential thermal analysis. Studies were extende…
The electronic and magnetic properties of one-dimensional titanium chains adsorbed on semiconducting armchair graphene nanoribbons (GNRs) are studied using the density functional theory. The results show that the strong hybridization between the titanium chain and the GNR gives rise to ferromagnetism and metallicity o…
Molecular systems designed for the conversion of solar energy offer ideal models in the study of the kinetics of light-induced electron transfer at surfaces. Due to their high porosity, nanocrystalline oxide semiconductor films allow investigations of interfacial and lateral charge transfer processes that are barely d…
An amphiphilic fluorescent catalyst Q9[EuW10O36] (Q = [(C18H37)2N+ (CH3)2]), assembled in the interface of emulsion systems, was directly imaged by fluorescence microscopy; the catalyst shows high selectivity and activity in the oxidation of alcohols using H2O2 as oxidant and the catalyst can be easily separated and r…
The irreversible loss of surface enhanced Raman spectroscopy (SERS) intensity derived from electrostatically immobilized Au colloidal substrate is studied. The total intensity of the SERS scattering from crystal violet molecules adsorbed onto the substrate was monitored for up to 240 s under continuous laser irradiati…
Two in one. Multifunctional hollow-type gold nanostructures that encapsulate iron oxide nanoparticles have been developed for biomedical imaging and targeted cancer therapy applications. The combination of the magnetic character of iron oxide nanoparticles with the near-infrared-light-absorbing (and scattering) gold n…
Gold nanoparticles surface-coated with thyminethiol derivatives containing long hydrocarbon chains have been prepared. The diameter of the particles is 2.2 and 7.0 nm, respectively, with a relatively narrow size distribution. Thyminethiol derivatives are attached to the gold particle surfaces with thymine moieties as…
We report a successful synthetic strategy to covalently assemble a monolayer of CoFe 2 O 4 nanoparticles on a silicon substrate using undecanoate as molecular linker. The nanocrystals of ferrite are coated with a protecting layer of undecanoate which beyond stabilizing the nanoparticles allows their organization on si…
Well-ordered mesoporous silica films were prepared by infusion and selective condensation of Si alkoxides within preorganized block copolymer/homopolymer blend templates using supercritical CO 2 as the delivery medium. The morphologies of the mesoporous silica films reflect significant improvements in the strength of…
An in situ reduction approach to synthesizing gold and silver nanoparticles by using a series of newly designed, redox-active amphiphiles at basic pH is described. These amphiphiles are the conjugates of a fatty acid (e.g., oleic acid, stearic acid, and lauric acid) and a redox-active amino acid (e.g., tryptophan or t…
Fast sternförmig: Tris(isonicotinoyl)cyclotriguaiacylen bildet mit Pd(NO3)2 metallosupramolekulare [Pd6L8]12+-Käfigverbindungen mit einem Durchmesser über 3 nm (siehe Bild). ESMS- und DOSY-NMR-Studien belegen, dass die achteckige Struktur mit einem hydrodynamischen Radius um 19 Å auch in Lösung vorliegt.
We propose a novel approach to describe wetting of plane solid surfaces by liquid drops. A two-dimensional nonconserved phase field variable is employed to distinguish between wetted and nonwetted regions on the surface. The imbalance in the Young's force provides for the exchange of relative stability of the two phas…
It has been difficult to obtain directly residue-specific information on side chain packing during a fast (ms) protein folding reaction. Such information is necessary to determine the extent to which structural changes in different parts of the protein molecule are coupled together in defining the cooperativity of the…
High-purity conformal metal oxide films were deposited onto planar and etched silicon wafers by surface-selective precursor hydrolysis in supercritical carbon dioxide using a cold wall reactor. Continuous films of cerium, hafnium, titanium, niobium, tantalum, zirconium, and bismuth oxides between 21 and 263 nm thick w…
The atomic scale structure of network glass forming systems with the AX 2 stoichiometry is considered and particular attention is paid to the systems GeSe 2 , ZnCl 2 and GeO 2 for which the partial-pair correlation functions have been measured by using the method of isotopic substitution in neutron diffraction. The ba…
Abstract Summary: Polyolefins with complex microstructures are becoming increasingly common in academic and industrial applications. Polyolefin analytical techniques are evolving to provide a more detailed picture of these microstructures, with the development and improvement of hyphenated‐techniques and cross‐fractio…
Fluctuation electron microscopy (FEM) is explicitly sensitive to 3- and 4-body atomic correlation functions in amorphous materials; this is sufficient to establish the existence of structural order on the nanoscale, even when the radial distribution function extracted from diffraction data appears entirely amorphous.…
Dendron stabilised Pd nanoparticles were prepared using the self-assembly of dendrons, which could catalyze a highly selective hydrogenation of dienes and acetylenes to monoenes.
Abstract Summary: Olefin block copolymers produced by chain shuttling catalysis exhibit crystallinity characteristics that are distinct from what would be expected for typical random olefin copolymers with comparable monomer compositions produced from either ‘single‐site’ or heterogeneous catalysis. Olefin block copol…
X-ray absorption and photoemission spectroscopies, high-resolution electron energy loss spectroscopy, spot profile analysis low energy electron diffraction, and density functional theory calculations are employed to study the growth of (001) oriented ${\mathrm{Mn}}_{3}{\mathrm{O}}_{4}$ surfaces on a Pd(100)-supported…