Materials Literature
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Block copolymer−polymer derived ceramic (PDC) precursor nanocomposites were prepared using amorphous poly(isoprene- block -(dimethylamino)ethyl methacrylate) (PI- b -PDMAEMA) and semicrystalline poly(isoprene- block -ethylene oxide) (PI- b -PEO) block copolymers as structure directing agents for poly(ureamethylvinyl)s…
We prepared porous antireflection surfaces from spin-coating of poly(2,2,2-trifluoroethyl methacrylate) (PTFEMA) latex particles onto bare glass slides. Optical properties resulting from two different coating structures, multilayer and submonolayer of latex particles, were studied depending upon the particle size. In…
Here, we have systematically studied the growth behavior of small zirconium clusters of up to 15 atoms and the adsorption of a H 2 molecule on the minimum energy clusters using the density functional theory (DFT) within the generalized gradient approximation (GGA). From the Zr 4 cluster, the low-energy clusters grow t…
The initial polymerization reactions in particle forming Ar/He/C 2H 2 plasmas are studied using molecular beam mass spectrometry (MBMS). The measured mass spectra are disentangled and quantified with the help of Bayesian probability theory. This approach uses the measured mass spectra and the cracking patterns (CPs) o…
Abstract The thermal and light‐induced spin transitions in [Fe x Zn 1– x (btzp) 3 ](BF 4 ) 2 and [Fe x Zn 1– x (endi) 3 ](BF 4 ) 2 {btzp = 1,2‐bis(tetrazol‐1‐yl)propane; endi = 1,2‐bis(tetrazol‐1‐yl)ethane} chain compounds have been investigated by magnetic susceptibility, photomagnetism and diffuse reflectivity measu…
Measurements of the enhancement of the thermal conductivity of an epoxy resin, when reinforced with plies of plain weave glass fabric and by carbon multiwalled nanotubes (C-MWNT) and with both, are presented. The transient hot-wire technique, as it was recently modified to measure the thermal conductivity of solids, w…
Abstract Four lots of cellulose acetate (CA) membranes, modified with polyacrylic acid, using various plasticizers, and coated with polyaniline (PANI) were prepared. The morphology of the membranes was evaluated by using scanning electron microscopy, and the membranes showed larger pore size when the plasticizers were…
We present hydrogenation/de-hydrogenation properties of ultrathin Mg nanoblades coated with Pd as a catalyst. The hydrided Pd/Mg/Pd and Pd/Mg nanoblades were highly curved as observed by ex situ scanning electron microscopy. An in situ thermal desorption spectroscopy (TDS) study showed that the hydrided Pd/Mg/Pd nanos…
Methacrylanilides, ArN(CH3)COC(CH2LG)=CH2, with allylic leaving groups (LG(-) = BocAla, PhCO2(-), PhCH2CO2(-), PhO(-)) undergo photochemical electrocyclic ring closure to produce a zwitterionic intermediate. Further reaction of the intermediate results in expulsion of the leaving group to give an alpha-methylene lacta…
In this investigation, a novel one-step fabrication of Ag-deposited Fe(2)O(3) particles and their application as surface-enhanced Raman scattering (SERS) substrates in chemical analyses are demonstrated. To deposit Ag onto them, Fe(2)O(3) particles were dispersed in a reaction mixture consisting of ethanolic AgNO(3) a…
From a library of glyco-lipid mimics with muconic amide as the spacer, we found that 1, a glyco-lipid that has N-acetyl glucosamine and methyl cyclohexyl groups as its hydrophilic head and hydrophobic tails, respectively, formed a stable hydrogel (0.05 wt %) through hierarchical self-assembly of the lipid molecules in…
Temperature is generally considered as an important factor in protein crystallization. Such is true because crystals usually grow at a preferable temperature in a certain crystallization solution. If a nonsuitable temperature is used, the solution will not yield crystals. However, it is difficult to decide the best te…
The influence of pi-interactions with a His ligand have been investigated in a family of copper-containing redox metalloproteins. The Met16Phe and Met16Trp pseudoazurin, and Leu12Phe spinach and Leu14Phe Phormidium laminosum plastocyanin variants possess active-site pi-contacts between the introduced residue and His81…
In this paper, based on selecting the appropriate type of quantum dots (QDs), a novel method is developed to enhance the quantum yield (QY) of silica-coated QD nanoparticles (SQDNPs). The effect of varying types of QDs on the QY after silica encapsulation is systematically studied. The results show that QDs with appro…
Insulating spinel materials, with the chemical formula $A{B}_{2}{X}_{4}$, behave as diamond lattice antiferromagnets when only the $A$-site atom is magnetic. Many exhibit classic signatures of frustration, induced not geometrically but by competing first- and second-neighbor exchange interactions. In this paper, we fu…
The aim of this overview of the work of Marseille Nanoscience Center is to provide biocrystallographs that intend to tackle crystallization with practical examples of the effect of temperature on protein phase separation and crystallization. Crystallization involves two separate processes: nucleation and growth, which…
Abstract The role of the single diluents and mixed diluents on the poly (vinylidene fluoride) (PVDF)/poly(methyl methacrylate) (PMMA) blend membranes via thermally induced phase separation (TIPS) process was investigated. The crystallization behaviors of PVDF in the diluted samples were examined by differential scanni…
Conjugated polymers are promising actuation materials for biomimetic robots and biomedical devices. Large bending is involved in some of these applications. This poses significant challenges in electromechanical modeling, because the linear elasticity theory is only valid when the strain is small. In this paper an eff…
Abstract Water‐blown flexible polyurethane foams and molded plastic films were made by replacing 0 to 50% of Voranol® 4701 in the B‐side of foam and plastic film formulation by epoxidized soybean oil (ESBO). Physical properties of foams including density, 50% compression force deflection (CFD), 50% constant deflection…
Abstract In Bi 2 Te 3 , dislocations were found with an uniquely high mobility at room temperature. The gliding dislocations were analysed and their effect on the thermoelectric properties is discussed. The glide of dislocations was induced by heating with a focused electron beam at 120 keV, external stresses were not…