Materials Literature
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The nucleation ability of isotactic poly(propylene) (iPP) to ammonium 2,2′‐methylene‐ bis ‐(4,6‐di‐ t ‐butylphenylene) phosphate (An) was investigated in the present work comparing with sodium 2,2′‐methylene‐ bis ‐(4,6‐di‐ t ‐butylphenylene) phosphate (NA‐11). Scanning electron microscope (SEM) revealed the crystallin…
Diamond presents many interesting properties in terms of biocompatibility, chemical inertness and is attractive for applications notably in the biosensor field. The formation of amine functional groups at the diamond surface is of great interest for biomolecule's immobilization. In this work, we present for the first…
Nanodiamonds (NDs) were investigated as reinforcement for ultrahigh molecular weight polyethylene (UHMWPE). Dry and wet mixing with planetary ball milling was compared and analysed by scanning electron microscopy (SEM), differential scanning calorimerty (DSC), X-ray diffraction (XRD) and contact angle measurements. Th…
To achieve a fast photochromic response in solid matrix, photochromic molecules/segments have been either dispersed into elastomers via physical doping or linked to glassy polymers by soft units through covalent bonding. However, the former is lack of high mechanical strength and the latter owes the drawback of time-c…
The work presented here investigates the synthesis of poly(lactic acid)–poly(ethylene oxide) diisocyanate chain‐linked copolymer, and its application in the nano‐encapsulation of bioactive compounds. Study was conducted on the effect of the type of chain‐linking agent, along with molecular weight, thermal properties a…
We systematically study the fluorination of nanometer-sized diamond cages, diamondoids, by time-dependent density functional theory. We find that fluorination affects both the highest occupied and lowest unoccupied molecular orbitals. Partial fluorination may decrease the energy of the excited state, and the lowest un…
Cp(BIG)2Sn (Cp(BIG) = (4-n-Bu-C6H4)5cyclopentadienyl), prepared by reaction of 2 equiv of Cp(BIG)Na with SnCl2, crystallized isomorphous to other known metallocenes with this ligand (Ca, Sr, Ba, Sm, Eu, Yb). Similarly, it shows perfect linearity, C-H···C(π) bonding between the Cp(BIG) rings and out-of-plane bending of…
ABSTRACT Innovative epoxy‐titania nanocomposites were prepared starting from titania nanoparticles suspended in benzyl alcohol (BzOH) generated by nonhydrolytic sol–gel process from TiCl 4 . The obtained suspensions were mixed with an epoxy resin (bisphenol A diglycidyl ether, DGEBA) and the formulations were cured in…
Protein and peptide aggregation is an important issue both in vivo and in vitro. Herein, we examine the aggregation behaviors of two well-studied β-hairpins, Trpzip1 and Trpzip2. Previous studies suggested that Trpzip2 remains monomeric up to a concentration of ~15 mM whereas Trpzip1 readily aggregates at micromolar c…
Using high-resolution angle-resolved photoemission spectroscopy, we elucidate the Rashba splitting of $\ensuremath{\Delta}{k}_{F}=0.003$ ${\AA{}}^{\ensuremath{-}1}$ near the Fermi level (${E}_{F}$) in the Shockley surface state of Cu(110) at the $\overline{\mathrm{Y}}$ point of the surface Brillouin zone. The observed…
A complete homologous series of polyphenylene dendrimers up to the ninth generation (G9) corresponding to a theoretical molecular weight of 1.9 MDa was characterized by MALDI–TOF mass spectrometry. Mass spectrometry of synthetic polymers at extreme high masses is still uncommon to date and the underlying probable reas…
First-principles calculations are performed to characterize the NO adsorption on large carbonaceous clusters modeling the surface of soot. Adsorption on the face and on the edges of perfect and defective clusters is considered in the calculations. It is shown that the first situation corresponds to physisorption and r…
Carbon nanotubes have a host of properties that make them excellent candidates for electron emitters. A significant amount of research has been conducted on nanotube-based field-emitters over the past two decades, and they have been investigated for devices ranging from flat-panel displays to vacuum tubes and electron…
The use of CuTC (Liebeskind’s catalyst), followed by methylenation and ring-closing metathesis, or bis-hydrazone coupling reactions is described. This approach establishes an alternative non-photochemical synthesis of the strategically important 1,2- b :4,3- b ′ BDT regioisomer, which has previously been underused in…
In this study, we used reactive sputtering to prepare large-area, homogeneous gold oxide (AuO x ) films, which we then subjected to reduction processes under ambient conditions at room temperature to obtain reduced AuO x films featuring embedded Au nanoparticles (NPs). We analyzed these films in terms of both their ma…
The propagation characteristics of electromagnetic waves in waveguides implemented using the “Fakir's bed of nails” are investigated both analytically and numerically. The classical metal walls of a parallel-plate waveguide are replaced by a Fakir's bed of nails metamaterial having arbitrary pin lengths on both walls;…
Biodegradable composites based on poly(butylene succinate) (PBS) and unidirectional plain jute fabrics have been developed. These composites were fabricated by compression molding of sandwiching 4–7 jute fabric layers between five and eight layers of PBS sheets. Surface modification of the jute fabric by alkali and co…
An invaluable resource for both graduate-level engineering students and practising nuclear engineers who want to expand their knowledge of fast nuclear reactors, the reactors of the future! This book is a concise yet comprehensive introduction to all aspects of fast reactor engineering. It covers topics including neut…
Abstract High‐yield syntheses of epoxides using an iron complex having two types of picolinates in the presence of hydrogen peroxide under halide‐free reaction conditions were achieved. The reaction is very simple. The complex, prepared with iron(II) acetate, 2‐picolinic acid (picH) and 6‐methyl‐2‐picolinic acid (Me‐p…
Bi1-xCaxFeO3 (x = 0.40, 0.50) compounds are synthesized by conventional solid-state reaction method. The effect of Ca2+ substitution is investigated on structural, dielectric and magnetic properties. Rietveld refinement confirms that crystal structures of both the samples are tetragonal with P4mm symmetry. The highest…