Materials Literature
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Single-walled and multiple-walled carbon nanotubes were functionalized with poly(vinyl alcohol) (PVA) in esterification reactions. Similar to the parent PVA, the functionalized carbon nanotube samples are soluble in highly polar solvents such as DMSO and water. The common solubilities have allowed the intimate mixing…
<div class="htmlview paragraph">Armoured tracked vehicle is a complex weapon platform. It accommodates weapon system, gun control systems, fire control systems for accurate firing, high-density powerpack, Automatic transmission system, hydro pneumatic suspension for better mobility and crew comfort at different…
Abstract The mechanical, elastic and anharmonic properties of zinc blende MgS compound have been investigated using a three‐body force potential arising from the charge transfer effects due to the deformation of the electronic shell of overlapping ions. The agreement between the results for elastic constants and bulk…
Abstract The 18 O tracer experiments were carried out on two cubic YSZ single crystals at temperatures of T D = 423 K and T D = 473 K. The diffusion profiles were determined by the SIMS technique. The diffusion coefficients, the surface exchange coefficients and the activation enthalpy are discussed together with earl…
The absorption and resonance Raman (RR) spectra of the bis-N-methylimidazole, bis-1,5-dicyclohexylimidazole, and bis-pyridine complexes of the meso-alphaalphabetabeta and meso-alphabetaalphabeta atropisomers of Fe(II)-tetrakis(o-pivalamidophenyl)porphyrins (Fe(II)TpivPP) were obtained in methylene chloride. The differ…
We investigate whether block copolymers of controlled effective segregation strength can be designed via a novel controlled radical polymerization technique that allows statistical polymerization of different monomers in either one of the constituting blocks: We examine the morphologies and segregation regimes of two…
Photoluminescence was observed in both synthetic and natural forms of the transition metal dichalcogenide ${\mathrm{MoS}}_{2}.$ The emission is in the near infrared between 0.8 and 1.2 eV. Two distinct regions were identified. The first region, centered at 1.18 eV and observed only in the synthetic material, is produc…
[reaction: see text] The ene reaction of singlet oxygen with chiral trisubstituted alkenes bearing an alkyl and a phenyl group at the stereogenic center is erythro diastereoselective in solution and threo diastereoselective if carried out within zeolite Na-Y. The change of the diastereoselection trend by zeolite confi…
We compare the efficacies of three preparation methods intended to create in an easy and inexpensive way a nonpreferential surface for a two-component homopolymer blend of polystyrene and poly(methyl methacrylate). The first method is to physically absorb two different high molecular weight copolymers of styrene and m…
A photoinduced transition from a charge-density-wave (CDW) phase to a charge-polarization (CP) phase has been recently found in a one-dimensional halogen-bridged binuclear platinum complex ${\mathrm{R}}_{4}[{\mathrm{Pt}}_{2}(\mathrm{pop}{)}_{4}\mathrm{I}]n{\mathrm{H}}_{2}\mathrm{O}$ $[\mathrm{pop}={\mathrm{P}}_{2}{\ma…
The evolution of the magnetic and structural properties of ${\mathrm{La}}_{2/3}{\mathrm{Ba}}_{1/3}{\mathrm{MnO}}_{3}$ perovskite manganite was studied as a function of temperature by means of dc magnetic measurements at zero pressure as well as under uniaxial pressure of 0.1 kbar and neutron-diffraction between 5--370…
We have gained new insight into the interactions between the second-messenger protein calmodulin (CaM) and myosin light chain kinase from skeletal muscle (skMLCK) using small-angle solution scattering and shape restoration. Specifically, we explored the nature of a 2Ca(2+)-CaM-skMLCK complex and compared it to a 4Ca(2…
Three new phenyl-substituted poly( p -phenylenevinylene) (Ph−PPV) derivatives with amino-functionalized groups were synthesized through either Gilch reaction for poly{2,5-bis[4‘-2-( N,N -diethylamino)ethoxyphenyl]-1,4-phenylenevinylene ( P1 ) or Wittig reaction for poly{2,5-bis(4‘-decyloxyphenyl)-1,4-phenylenevinylene…
Abstract Novel glass fiber‐reinforced composites were prepared from E‐glass fibers and perfluoropolyether (PFPE), polyurethane acrylate, and methacrylate resins. The PFPE resins were synthesized by a two‐step process and formulated with reactive acrylic diluents obtaining two compositions with different viscosity and…
Abstract The full‐potential linearized augmented plane waves (FP‐LAPW) method within the generalized gradient approximation (GGA) is applied to determine the electronic properties of the equiatomic alloys B2‐MTi ( M = Fe, Co, Ni). Detailed analysis is devoted to the NiTi austenic, premartensic, and martensic phases. T…
Dynamical homogeneity was observed in mixtures of PVME with two small molecules 4-ethylphenol [EPh] and bis(4-hydroxyphenyl)methane [BPM] by broadband dielectric spectroscopy. TTS is valid in mixtures with EPh concentrations up to 50% and for BPM content from 2 to 30%, and all have the same segmental relaxation time d…
Abstract Polycrystalline samples of Sr 5 EuCr 3 Nb 7 O 30 , a member of the tungsten bronze (TB) family, have been prepared by a novel chemical precursor route with a chemical dispersion and mixing of the metal cations in an acidic solution. Preliminary structural studies have been carried out using X‐ray diffraction…
We examined the effect of ionizable residues at positions flanking the hydrophobic core of helix-forming polyLeu peptides upon helix-helix interactions within model membrane vesicles composed of dioleoylphosphatidylcholine. The peptides studied were flanked on both the N and C termini either by two Lys (K(2)-flanked p…
Ethyl 1-[(4-hydroxyphenyl)aminocarbonyl)]-2-vinylcyclopropane carboxylate has been oligomerized using horseradisch peroxidase as catalyst. The oligomerization was achieved in the presence of cyclodextrine at room temperature in phosphate buffer (pH 7). The oligomer formed was cross-linked via free radical polymerizati…
This Communication describes a pseudotetrahedral d7 complex, [PhBP3]Co(OSiPh3), that exhibits thermally induced spin-crossover both in solution and in the solid state. Magnetic crossover behavior is achieved by confluence of the X-type ligand and the tripodal auxiliary employed. Four-coordinate platforms of the presen…