Materials Literature
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The aim of this study was to evaluate the possibility of metal complex formation between sodium-phosphorylated chitosan (PCTS) and ZnO. The polymer-metal complex formation was investigated in terms of thermal degradation. The structure deduction of the PCTS/ZnO complex was investigated by means of Fourier transform in…
A research has been conducted to synthesize thiomethylated-C-4-methoxyphenylcalix[4]resorcinarene using fennel oil as a starting material. The synthesis was carried out in four steps i.e. (1) oxidation of anethole to yield p-anisaldehyde, (2) HCl-catalyzed condensation of p-anisaldehyde with resorcinol, (3) chlorometh…
A novel hydrated fluoroselenate NaCoSeO(4)F·2H(2)O has been synthesized, and its structure determined. Like its sulfate homologue, NaCoSO(4)F·2H(2)O, the structure contains one-dimensional chains of corner-sharing MO(4)F(2) octahedra linked together through F atoms sitting in a trans configuration with respect to each…
The metabolism of glycine into glutathione was monitored noninvasively in vivo in intact rat mammary adenocarcinomas (R3230Ac) by MRI and MRS. Metabolism was tracked by following the isotope label from intravenously infused [2-(13)C]-glycine into the glycinyl residue of glutathione. Signals from [2-(13)C]-glycine and…
Any petal but a lotus: The hierarchically structured ZnO surface presents superhydrophobicity and a distinctive solid–liquid adhesion that can be attributed to the suitable size of nanostructures in combination with microscopic structures (see picture). Although the surface is superhydrophobic, water droplets continue…
The remarkable enhancement of the crystalline perfection of benzophenone (BP) crystals induced by liquid crystal (LC) doping has been investigated, and has in turn led to better optical properties. High-resolution X-ray diffractometry demonstrates that the structural grain boundaries present in pure crystals can be el…
Hydridträger: Bei einem deutlichen Fortschritt auf dem Weg zu praktischen Wasserstoffspeichermaterialien für mobile Anwendungen zeigt uns die anorganische Chemie, wie sich die größten bisher bekannten ligandenunterstützten Magnesiumhydrid-Cluster aufbauen lassen.
Abstract Naphthopyran homopolymer and copolymer containing coumarin in side chain were synthesized by atom transfer radical polymerization. Their photochromic properties were investigated using UV–vis absorption spectroscopy and their decoloration kinetics in films was quantified by biexponential fitting of their phot…
PARACEST (PARAmagnetic Chemical Exchange Saturation Transfer) agents offer the ability to generate "contrast on demand", negating the need to image before contrast agent injection. Perfluorocarbon (PFC) nanoparticles can deliver very large payloads of PARACEST agents, lowering the effective detection limit for molecul…
Silicon clusters were produced by gas aggregation in vacuum and co-deposited with water vapour onto a cold target where the water vapour froze. Melting of the ice yielded fluorescent silicon nanoparticles suspended in water which were investigated by photoluminescence spectroscopy (PL) and atomic force microscopy (AFM…
Abstract Interaction of the components and physical properties of the polypropylene (PP)/cycloolefin copolymer (COC) blends were studied by means of differential scanning calorimetry (DSC), dynamic mechanical thermal analysis (DMTA), Vicat softening temperature (VST), and measurements of the coefficient of linear ther…
Abstract The aim of this research is to develop nanocomposite polyethylene terephthalate‐polyamide blends (PET/MXD6 blends) with low oxygen permeability. Particular attention has been paid to the relation between barrier properties and the processing route adopted and therefore four different strategies were considere…
The temperature-induced phase transition in an as-deposited amorphous Ge 2 Sb 2 Te 5 (GST) thin film was studied by a unique combination of in situ synchrotron techniques (diffraction and reflectivity of X-rays) and sheet resistance measurements. The combination of these characterization techniques allowed the simulta…
Low-temperature vacuum reduction was used for the preparation of the oxygen-deficient BiMnO(2.81) sample in a bulk form from stoichiometric BiMnO(3). The transformation occurs in vacuum better than 10(-3) Pa at a narrow temperature range of 570-600 K. The structure of the new phase was analyzed using synchrotron X-ray…
Compounds of the type M(2)Bz(3) (Bz = benzene, C(6)H(6)) have been of interest since the related triple-decker mesitylenechromium sandwich (1,3,5-Me(3)C(6)H(3))(3)Cr(2) has been synthesized and characterized structurally by X-ray crystallography. Theoretical studies predict the lowest-energy M(2)Bz(3) structures of th…
Polyhydroxyalkanoates (PHAs) are biodegradable, biocompatible polyesters and very attractive candidates for biomedical applications as materials for tissue engineering. They have a hydrophobic character, but some are able to spread at the air-water interface to form monomolecularly thin films (Langmuir monolayers). Th…
Luminescent Vesicles: Triple-color-emitting organic/inorganic nanovesicles are successfully prepared through a stepwise self-assembly approach. This innovative “bottom-up” methodology can be used to fabricate multi-luminescent soft organic/inorganic hybrid nanostructures displaying diverse colors.
Abstract Atom transfer radical polymerization using activators regenerated by electron transfer (ARGET ATRP) of acrylonitrile with FeBr 3 and isophthalic acid (IA) as catalyst and ligand, ascorbic acid (VC) as reducing agent, and ethyl 2‐bromoisobutyrate as initiator was approached for the first time in the presence o…
We describe Raman spectroscopy measurements of distyrylbenzene (DSB) molecules equipped with plasmonic antennae in the form of silver dumbbells in aqueous solution under ambient conditions. A synthetic strategy in which the dithiolated molecule is used as the linker between silver nanospheres ensures that the molecule…
Abstract We report a theoretical study of a new copolymer based on (Carbazole and Ethylenedioxythiophene) n ( n = 1–3) in their neutral and oxidized states, by using B3LYP/6‐311G(d,p) calculations and thus deduce its optoelectronic properties. We discuss the influence of chain length of these properties. We also discu…