Materials Literature
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A superparamagnetic iron oxide (SPIO) nanoparticle is emerging as an ideal probe for noninvasive cell tracking. However, its low intracellular labeling efficiency has limited the potential usage and has evoked great interest in developing new labeling strategies. We have developed fluorescein isothiocyanate (FITC)-inc…
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Abstract The pressure behavior of the ultraviolet (UV) and green emission bands in ZnO tetrapod‐like micro‐rods has been investigated at 300 and 70 K, respectively. The pressure coefficient of the UV band at 300 K is 24.5 meV/GPa, consistent with that of the band gap of bulk ZnO. However, the pressure coefficient of t…
Abstract The galvanomagnetic effects in the n‐Pb 1– x Sn x Te:Ga ( x = 0.21) and n‐Pb 1– y Ge y Te:Cr ( y = 0.10) alloys at temperatures 4.2 ≤ T ≤ 300 K and under hydrostatic compression up to 17 kbar have been investigated. It is found that in almost the whole investigated pressure range in the samples investigated t…
Oxygen vacancies are shown by STM to play a fundamental role in the stabilization of complex anions on an oxide surface at elevated temperatures. By increasing the temperature in the range 120–420 K, sulfite is transformed into sulfate on a TiO2(110) surface, and there is a change in the adsorption site which seems to…
Abstract Low‐density polyethylene (LDPE) composites modified with a resin based on ethylene/methacrylic acid copolymer (surlyn) and/or citric acid were electron beam‐irradiated and investigated by electron spin resonance (ESR) at room temperature. ESR studies were carried out directly after irradiation and after vario…
Abstract The structure of Tb 2 Ti 2 O 7 pyrochlore was investigated at high pressures up to 24 GPa at cryogenic temperatures down to 6.5 K using angular dispersive X‐ray diffraction with synchrotron radiation at HPCAT, Advanced Photon Source. The cell parameters were obtained by performing full profile Rietveld refine…
Abstract Zinc butyl xanthate [Zn(bxt) 2 ] was prepared in the laboratory. The effect of this xanthate with zinc diethyl dithiocarbamate (ZDC) on the vulcanization of natural rubber (NR), polybutadiene rubber (BR), and NR/BR blend has been studied at different temperatures. The amounts of Zn (bxt) 2 and ZDC in the comp…
Abstract A family of supramolecular polymers was prepared via Cd 2+ ‐directed self‐assembly polymerization of bis(2,2′:6′,2″‐terpyridine)‐based ligand monomers, using oligofluorenes and triphenylamine as bridges under mild conditions. The polymers were fully characterized using thermogravimetric analysis, inherent vis…
Abstract Mesoporous thin films are prepared using a simple sol–gel technique. Using lithographically patterned (100)‐orientated substrates and a dip‐coating method reproducible alignment of the pores across the substrate surface can be obtained. The pores preferentially align parallel to the long side of the channels…
Alles in Ordnung! Mesoporöses Kupferoxid wurde erstmals durch eine doppelte Replikation aus dem geordneten mesoporösen Siliciumoxid SBA-15 über ein geordnetes mesoporöses Kohlenstoff-CMK-3-Intermediat synthetisiert (siehe Bild). Dieses Material könnte interessante Eigenschaften in der Katalyse oder in Lithiumionenbatt…
Four novel fluorescent diarylethenes have been designed and synthesized. They showed excellent ring-opening and ring-closing photoisomerization properties with UV/Vis irradiation. It is found that both the ring-open and the ring-closed isomers have similar fluorescence emission, which is different from the known fluor…
Effects of octanoic acid (OA) on the morphology, diffraction efficiency, and electro-optic properties of the transmission mode of holographic polymer-dispersed liquid crystals (HPDLC) are studied. Droplet size decreases with increasing OA content (0-9 %), and this leads to a monotonic increase in off-state diffraction…
We report the spectroscopic observation of bound excitons in natural ${\mathrm{Cu}}_{2}\mathrm{O}$ samples, which are generated by impurity capture of free excitons. Due to the broken symmetry of a bound exciton, its radiative recombination rate increases, causing a greatly enhanced luminescence intensity compared wit…
Diffuse reflectance (visible) and attenuated total internal reflection Fourier-transform infrared (ATR-FTIR) spectroscopies were used to examine a colloidal nontronite clay in the presence of Fe2+(aq). pH-dependent changes are observed in both types of spectra. In the visible region, a broad feature at approximately 7…
Abstract Melt rheology and processability of exfoliated polypropylene (PP)/layered silicate nanocomposites were investigated. The nanocomposites were prepared by melt compounding process in the presence or absence of a PP‐based maleic anhydride compatibilizer. PP/layered silicate nanocomposites showed typical rheologi…
Morphosynthesis of calcium-rich materials by tuning the chemical structure of organic matrices has tremendous potential in the preparation of functional mineralized materials. In this paper, we have demonstrated the deposition of thin films of CaCO 3 by subtle modifications of the backbone of poly(methyl methacrylate)…
Crystallization of the metastable polymorph of paracetamol has been shown to occur around the edge of an evaporating aqueous solution. Conditions at the edge of a meniscus during evaporation led to an increase in solution concentration that allowed the nucleation of metastable crystals. This form was then unable to tr…
Abstract The antibacterial activities of chitosan and its water‐soluble derivatives on E. coli were studied according to four influencing factors in vitro . The antibacterial study showed that chitosan, O ‐hydroxyethyl chitosan (O‐HECS), and O ‐carboxymethyl chitosan (O‐CMCS) could inhibit the growth of the microbial.…
Abstract Soluble polyimides were prepared from suitable monomers and were evaluated for their thermal and mechanical properties. The polymers were processed into films for use as supports for transparent, conductive indium tin oxide (ITO) layers. After deposition, annealing in vacuo at temperatures up to 400°C was per…