Materials Literature
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The adsorption of acetaldehyde and its coadsorption and reaction with NO 2 were investigated on a Na−Y,FAU zeolite using in situ FTIR spectroscopy. Acetaldehyde adsorbs strongly over Na−Y and desorbs molecularly at around 400 K with very limited extent of condensation or polymerization. Reaction between CH 3 CHO and N…
The magnetic properties of the layered compound ${({\mathrm{C}}_{2}{\mathrm{N}}_{2}{\mathrm{H}}_{10})}_{1∕2}\mathrm{Fe}\mathrm{P}{\mathrm{O}}_{4}(\mathrm{O}\mathrm{H})$ have been studied using dc magnetization and ac susceptibility measurements. The compound orders as a canted antiferromagnet at ${T}_{c}=29.6\phantom{…
Abstract Summary: In the present study, the compatibility, properties and degradability of polyolefin/lignin blends have been studied. Blends of three maleic anhydride grafted copolymers of ethylene‐propylene rubbers containing various content of functional groups with epoxy‐modified lignosulfonate have been investiga…
Abstract The use of trans ‐polyoctylene rubber (TOR) as a compatibilizer for blends of natural rubber (NR) and acrylonitrile‐butadiene rubber (NBR) was investigated using atomic force microscopy (AFM) and dynamic mechanical analysis (DMA). The NR/NBR blends containing varying proportions of TOR were prepared in an int…
Abstract Graft copolymers of poly(vinyl alcohol) with thiophene side‐groups and pyrrole were synthesized by electrochemical polymerization methods. Poly(vinyl alcohol) with thiophene side‐groups (PVATh) was obtained from the reaction between poly(vinyl alcohol) (PVA) and thiophene‐3‐acetic acid. The syntheses of copol…
The exfoliated single-layer titanate can rapidly restack and reversibly release heme protein simply by adjustment of the pH value. The composites have regularly layered structure and powdery morphology by their ideal layer-to-layer assembly, which provides the titanate nanosheet an unusual specific intercalation capac…
Eine Röhre für Elektronen: π-π- und Coulomb-Wechselwirkungen halten den Komplex aus Kohlenstoffnanoröhren, die Pyren+ (1) tragen, und dem Zinkporphyrinkomplex 2 zusammen. Der Photoanregung des Donor-Acceptor-Systems folgt eine rasche und effiziente Ladungstrennung. Der dabei gebildete Zustand hat eine Lebensdauer von…
Abstract Summary: The title polymers, in which both the stem and the graft are biodegradable, have been synthesized for the first time in a one‐pot, lipase‐catalyzed, graft‐polymerization reaction (in bulk, at 70 °C) of β ‐butyrolactone ( β ‐BL) and ε ‐caprolactone ( ε ‐CL) onto chitin and chitosan. The reactivity ord…
This work describes the crystal structures of phenylbutazone 2:1 solvates with benzene, cyclohexane, 1,4-dioxane, tetrahydrofuran, tetrachloromethane, and chloroform. These solvates are isostructural, with the exception of the chloroform solvate. The solvent molecules are located in channels from which they can escape…
PURPOSE OF REVIEW: The purpose of this review is to provide an outline of the basic and clinical information on gallium nitrate as an antineoplastic agent. Although early clinical trials indicated that gallium nitrate had activity against lymphoma and bladder cancer, its subsequent development centered primarily on it…
Mikroorganismen weisen den Weg: Mit einfachen chemischen Verfahren wurden die Silicatzellwände mehrerer Diatomeen kovalent mit DNA funktionalisiert, um als Template für die sequenzspezifische Zusammenlagerung und 3D-hierarchische Anordnung vorab gebildeter DNA-modifizierter Gold-Nanopartikel zu fungieren. Die DNA dien…
Oriented powder samples of ${\mathrm{N}\mathrm{a}}_{x}{\mathrm{C}\mathrm{o}\mathrm{O}}_{2}$ are studied by $^{23}\mathrm{N}\mathrm{a}$ NMR and SQUID magnetometry. In nominal $0.50\ensuremath{\le}x\ensuremath{\le}0.70$ solid state reacted samples the dominant phase synthesized has a single composition ${x}_{0}\ensurema…
Alternative descriptions for the ground state structure of the half-doped manganite ${\mathrm{Pr}}_{0.5}{\mathrm{Ca}}_{0.5}\mathrm{Mn}{\mathrm{O}}_{3}$ have been tested against high-resolution $10\phantom{\rule{0.3em}{0ex}}\mathrm{K}$ x-ray and neutron powder diffraction data. The best fit is obtained using a $P{2}_{1…
A new optical resolution technique by natural cooling crystallization combined with pulse heating was proposed, in which a “tailor-made” additive was used as a separation agent. As a model chiral compound, the conglomerate of asparagine ( d,l -Asn) was examined. By simple batch natural cooling crystallization, the pri…
Das Iodat Cs2I4O11 kristallisiert in einer Schichtstruktur mit einem hexagonalen Gerüst vom Wolframoxid-Typ. Eckenverknüpfte IO5-Polyeder bilden Sechserringe, wobei drei der freien Elektronenpaare in die Ringe hineinragen und die übrigen drei nach außen zeigen (siehe mittleren Ring im Bild). Einseitiges Überdachen die…
Interactions of polyamidoamine dendrimers, termed Gn, where n indicates the generation (=number of amidoamine layers), at different protonation levels with selected amino acids and proteins have been investigated by means of continuous wave electron paramagnetic resonance (cw-EPR) and pulsed-EPR (electron spin-echo =…
Novel organic (positively charged fullerene)-inorganic (negatively charged CdTe nanoparticle) nanoensembles were devised through electrostatic interactions and probed as versatile donor-acceptor hybrids. Photoirradiation of their homogeneous solutions, containing the electrostatically packed components, let to very lo…
Abstract Summary: A combination of reversible addition‐fragmentation chain transfer (RAFT) polymerization and atom transfer radical polymerization (ATRP) techniques were applied for the synthesis of novel polymer brushes by using the “grafting from” approach or a combination of “grafting through” and “grafting from” m…
The fabrication and electrical property characterization of a new class of carbon nanotube (CNT)–nitride nanocomposites have been reported in this work. Electrical property measurements clearly reveal obvious increases in the electrical conductivities confirming the formation of a true composite material with enhanced…
A sign of the times: A 1:1 tweezer complex consisting of an achiral bis(zinc porphyrin) and (R,R)-1,2-diaminocyclohexane has been characterized by X-ray crystallographic analysis (see picture, Zn red, N blue). This has enabled a full and unambiguous rationalization of the highly efficient transfer of chirality informa…