Materials Literature
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Abstract Expanded bed adsorption (EBA) is an integrated technology for capturing target biomolecules directly from particle‐containing feedstock. The adsorbents are the key base to achieve the EBA process and should be designed specially. In present work a new type of composite particles for EBA application was prepar…
Abstract A facile approach to polymer nanocomposites with single‐wall carbon nanotubes and cationic polymers is reported. The composite material was synthesized by producing carboxylic acid groups at the nanotube termini followed by a reaction with poly(allylamine) in water. Fourier transform infrared spectral and the…
Novel nanostructured carbon material was synthesized by applying zeolite LTA as a template and using methanol as a carbon source. X-ray diffraction (XRD) revealed that the higher the decomposition temperature, the more graphitic and ordered the structure. The optimum pyrolytic temperature for addition of microporosity…
Isostructural clusters exhibit contrasting magnetic properties when the number of electrons differs. Surprisingly, the same is true even for isoelectronic cages (e.g. O(h) B6H6(2-) is diatropic, whereas O(h) Si6(2-) is paratropic) or for those with different substitutents (e.g. T(d) B4H4 is paratropic, whereas T(d) B4…
Abstract Intumescent coatings are increasingly used as a method of passive fire protection on steel constructions. By forming a carbon network and releasing a blowing agent, the thin intumescent film swells 100‐fold at elevated temperatures. The highly insulating foam effectively prevents the load bearing steel from r…
Abstract The elastic behavior of a propylene–ethylene copolymer was investigated. An initial “conditioning” tensile extension up to 800% strain resulted in an elastomer with low initial modulus, strong strain hardening, and complete recovery over many cycles. Structural changes that occurred in the low crystallinity p…
Powders of BaCe 0.95 Yb 0.05 O 3 - δ were synthesized using the standard solid-state reaction method. The produced materials were characterized by XRD, SEM, and Raman spectrometry. The absorption kinetics of hydrogen was studied using the TA-TQ500 TGA. The XRD study established the following: the phase composition, ce…
Abstract The dynamic mechanical properties of high‐performance polymer matrix composites based on semicrystalline poly(ether ether ketone) (PEEK) and aluminum oxide (Al 2 O 3 ) were evaluated in the temperature range of 30–250°C with a three‐point‐bending mode at a frequency of 1 Hz. The storage modulus and loss modul…
We have re-examined the B-N distance potential of CH3CN-BF3 using MP2, DFT, and high-accuracy multicoefficient methods (MCG3 and MC-QCISD). In addition, we have solved a 1-D Schrödinger equation for nuclear motion along the B-N stretching coordinate, thereby obtaining vibrational energy levels, wave functions, and vib…
A facile synthetic route for the preparation of block copolymer microcapsules with cobalt magnetic nanoparticles (MPs) embedded in the polymer shells is reported. The preparation involved first the Co 2+ reduction to produce cobalt nanocrystals (∼13 nm in size). This was followed by the formation of thin polymeric coa…
The state of gold on a Au/NaY zeolite sample prepared from Au(CH 3 ) 2 (C 5 H 7 O 2 ) and subjected to various treatments was monitored by infrared spectroscopy of adsorbed CO as a probe molecule. Spectra of CO adsorbed on a sample exposed to air and evacuated at room temperature indicate predominantly zerovalent gold…
Abstract PANI nanotubes were successfully prepared by using thin glass tubes as a single template in the presence of H 4 SiW 12 O 40 and ammonium persulfate, which were used as dopant and oxidant, respectively, in this system. The structure and morphology of the PANI were characterized by IR spectrum, XRD pattern, SEM…
Ultralong Cu@carbonaceous submicrocables with diameters of 0.4−0.6 μm and lengths up to and exceeding 100 μm have been fabricated successfully by a poly(vinyl alcohol)- (PVA-) assisted hydrothermal carbonization process using copper chloride and maltose as materials. In this one-pot synthesis, poly(vinyl alcohol) (PVA…
Bottoms up! Films were built up in a layer-by-layer fashion using high-molar-mass double-stranded DNA and cationic poly(ferrocenylsilane) polyelectrolytes. In this one-step “bottom-up” self-assembly approach, a unique macroporous architecture (see picture) featuring biocompatible and redox-active components was obtain…
Abstract High-temperature exposure of a Mo(110) surface to borazine (HBNH) 3 leads to the formation of two distinctly different self-assembling nanostructures. Depending on the substrate temperature during preparation, either well-aligned, ultra-thin boron nanowires or a single-layer stripe structure of hexagonal boro…
Type I phosphomannose isomerase (PMI) is a Zn-dependent metalloenzyme involved in the isomerization of D-fructose 6-phosphate to D-mannose 6-phosphate. One of our laboratories has recently designed and synthesized 5-phospho-D-arabinonohydroxamate (5PAH), an inhibitor endowed with a nanomolar affinity for PMI (Roux et…
Single-molecule-like carbon nanocapsules derived from I2-filled ultrashort single-walled carbon nanotubes (US-tubes) have been prepared and characterized as a new paradigm in X-ray contrast-agent design. Functionalized by Bingel chemistry with external malonodiserinolamide (Ser) groups, the new I2@US-tube (Ser)n speci…
A general nonaqueous route has been applied for the preparation of rare-earth ordered nanocrystalline hybrid structures. In a simple one-pot reaction process, Y 3+ and Gd 3+ isopropoxides were reacted in an autoclave with 4-biphenylmethanol at 275 °C. This approach leads to crystalline rare-earth oxide thin layers (∼0…
Abstract Of the several techniques available for surface modification, plasma processing has proved to be very appropriate. The low temperature plasma is a soft radiation source and it affects the material only over a few hundred angstroms deep, the bulk properties remaining unaffected. Plasma surface treatment also o…
Abstract A novel fluorinated hyperbranched polyimide (HBPI) is synthesized by using a new triamine monomer, 1,3,5‐tris(2‐trifluoromethyl‐4‐aminophenoxy)benzene (TFAPOB) (A 3 ), as a ‘core’ molecule, 4,4‐(hexafluoroisopropylidene)diphthalic anhydride (6FDA) as a B 2 monomer, and 3,5‐ditrifuoromethylphenyl as an endcapp…