Materials Literature
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[NH(4)](2)Mn(3)(H(2)O)(4)[Mo(CN)(7)](2).4H(2)O (1) has been synthesized by slow diffusion of aqueous solutions containing K(4)[Mo(CN)(7)].2H(2)O, [Mn(H(2)O)(6)](NO(3))(2), and (NH(4))NO(3). Compound 1 crystallizes in the monoclinic C2/c space group. The basic motif of the three-dimensional structure consists of a Mo1-…
We have studied the behavior of a low molecular mass organosiloxane ferroelectric liquid crystal at the air−water interface. Data obtained with Langmuir isotherms, surface potential measurements, and Brewster angle microscopy are presented and discussed. The compound forms films on the Langmuir trough, with phase tran…
Der einzige kinetisch relevante Schritt in der katalytischen CH4-Aktivierung auf Ir-Clustern ist – nach einer detaillierten Analyse – die C-H-Aktivierung (siehe Bild). Sie ist auf der Oberfläche kleiner Ir-Cluster auf Oxidträgern begünstigt und wird auch für andere Edelmetallkatalysatoren nachgewiesen. Andere Elementa…
Abstract Wood adhesives derived from softwood bark pyrolysis oils (PO) and isocyanates (pMDI) have been developed for particleboards with a non-conventional blending system. The PO produced by the vacuum pyrolysis Pyrocycling™ process was used to replace between 30 and 40% by weight of the pMDI in a 4% adhesive-contai…
In this work a method for the estimation of pore anisotropy, b, in porous solids is suggested. The methodology is based on the pore size distribution and the surface area distribution, both calculated from trivial N2 adsorption-desorption isotherms. The materials used for testing the method were six MCM-Alx solids in…
Abstract The importance of alloys and blends has increased gradually in the polymer industry so that the plastics industry has moved toward complex systems. The main reasons for making polymer blends are the strengthening and the economic aspects of the resultant product. In this study, I attempted to improve compatib…
In this study, the oxidative polycondensation reaction conditions of 2-[(4-fluorophenyl) imino methylene] phenol (FPIMP) with air oxygen and NaOCl were studied in an aqueous alkaline medium between 60 and 90 °C. Synthesized oligo-2-[(4-fluorophenyl) imino methylene] phenol was characterized by 1H-NMR, FT-IR, UV–Vis, s…
The dielectric spectra for the series poly(dimethyl itaconate) to poly(di- n -octyl itaconate) have been measured and are discussed within the context of a main-chain−side-chain nanomorphology. The major dielectric event is associated with the calorimetric glass transition. In contrast to methacrylate family of polyme…
We have analyzed the structure and composition of the first layer of an ${\text{Al}}_{72}{\text{Co}}_{16}{\text{Ni}}_{12}$ tenfold surface by means of scanning tunneling microscopy (STM), ion scattering spectroscopy (ISS), and Auger electron spectroscopy (AES). High-resolution STM images reveal local structures that h…
Fangen spielen mit Terbium: Neue hydrophobe Kontakte und bindende Aminosäuren wurden bei der Röntgenstrukturanalyse (2.0 Å Auflösung) eines chemisch entwickelten, 17 Aminosäurereste umfassenden Lanthanoid-bindenden Peptids im Komplex mit Tb3+ nachgewiesen (siehe Bild). Diese Befunde sind in Einklang mit denen von Lumi…
The preparation and physical characterization are reported for a novel single-molecule magnet [Mn(12)O(12)(OAc)(12)(dpp)(4)] (dppH = diphenyl phosphate) with no coordinating water molecules. The crystal structure analysis reveals that there are four five-coordinate Mn(III) ions with Mn.H approaches. Addition of water…
Abstract Soy protein concentrate, a potential alternative of petrochemical polymers, has been crosslinked with furfural at 0.5,1, 2.5, 5, and 7.5% (w/w). The materials were then compression‐molded into plastic tensile bars and tested for tensile and yield strength, percentage elongation, and water absorption. The infr…
Abstract The mechanical properties and aging characteristics of blends of ethylene propylene diene monomer (EPDM) rubber and styrene butadiene rubber (SBR) were investigated with special reference to the effect of blend ratio and cross‐linking systems. Among the blends, the one with 80/20 EPDM/SBR has been found to ex…
Concurrent sonolysis of iron pentacarbonyl and poly(ethylene glycol)-400 (PEG-400) in hexadecane solvent proceeds via zero-order kinetics and results in Fe nanoparticles encapsulated in PEG-400 (Fe-PEG). The transmission electron microscopy images show Fe-PEG consisting of <3 nm Fe particles that are evenly dispersed…
Hydrosilylative crosslinking of the coronas of tubules of self-assembled poly(ferrocenyldimethylsilane-b-polymethylvinylsiloxane) (PFS–b–PVMS) formed in hexane result in shell-crosslinked organometallic nanotubes (see picture) with reversible redox behavior and tunable swellability.
Exceptional resistance to sulfur poisoning of the Na–Y zeolite arises from the localization of adsorbed sulfur dioxide on the zeolite in the presence of water. The work shows that Rietveld refinement of guest molecules is a powerful method to determine positions and states of different molecules co-adsorbed on a zeoli…
Abstract The stacked lamellar morphology commonly found in extruded semicrystalline materials has a strong influence on the flow direction, with respect to the loading direction, and on the stability and localization phenomena in tensile experiments. A multiscale numerical model was used to simulate the effect on the…
Dimers of flat (EDO-TTF)+ molecules separated by bent neutral EDO-TTF (ethylenedioxytetrathiafulvalene) molecules are found in the insulator phase of (EDO-TTF)2PF6, but not in that of the metallic phase. The cooperativity of Peierls distortion, charge ordering, and anion ordering in this metal–insulator transition can…
Abstract The formation of Ag clusters on silica colloidal nanoparticles was achieved by photoreduction of silver ions with visible laser irradiation. A mechanism of this process was proposed by observing the plasmon resonance bands of the silver clusters in UV–visible absorption spectroscopy. These Ag/SiO 2 colloids a…
Getting the guests to leave without destroying them and potentially damaging the templated inorganic host (see structure) is crucial to the preparation of completely porous materials. Alternatives to calcining, such as extraction and chemical cleavage of the template, are being developed.