Materials Literature
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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…
Over the past several years, synthesized mesoporous nanosilica (SiO 2 ) powders have been developed by many different methods. The methods include precipitation and microemulsion, the Stöber method, chemistry, and technology. In this study, mesoporous silica powders are synthesized by the sol-gel method. The sol-gel m…
The transmissivity of fogged glass to visible light incident on the dry side is studied with ray tracing to show that condensation can act as an optically thick antireflective coating. A new simulation method is described that uses symmetry relations and analytical expressions for the intersection of rays and surfaces…
In this study, the effects of selected intermingling process parameters on yarn breaking strength and elongation were predicted using artificial neural network. For this aim, partially oriented polyester yarn with 283 dtex linear density and three different numbers of filaments (34, 68, and 100) were used for producin…
Correlation of the efficiency of some dihydrazide derivatives, namely malonic acid (MAD), succinic acid (SAD) and adipic acid (AAD) dihydrazide, against the corrosion of nickel in 1 M sulfuric acid solution is discussed using electrochemical polarization method and quantum chemical calculations based on the ab initio…