Detonation nanodiamond: Perspective and Applications
(2009). Detonation nanodiamond: Perspective and Applications. Surface Engineering: Vol. 25, No. 7, pp. 487-489.
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Synthesis of Light‐Responsive Bridged Nucleic Acid and Changes in Affinity with Complementary ssRNA
Turn on the light: We have designed a light-responsive bridged nucleic acid (BNA) with a photolabile group at the bridged structure that can change its affinity for a complementary single-stranded RNA (ssRNA) in two stages. Oligonucleotides containing light-responsive BNA lose their binding affinity for complementary…
Molecular Dynamics and Quantum Chemistry Study on Conformations and Optical Properties of Hydrogen Bonded Dipolar Merocyanine Dyes
An earlier proposed strategy to orient two merocyanine dyes in the desirable head-to-tail parallel fashion through multiple hydrogen bonds has been examined by molecular dynamics simulations and quantum chemical calculations. Two different merocyanine dyes dissolved in chloroform solution under various conditions are…
Rheology and morphology of high impact polystyrene/ polyethylene blends and the effect of compatibilization on their properties
Abstract Attempts were made to study rheology and morphology of high impact polystyrene/polyethylene (HIPS/PE) blends. The Effect of compatibilization using styrene‐butadiene‐styrene copolymer (SBS) and styrene‐ethylene‐butylene‐styrene copolymer (SEBS) on their properties was also studied. The results of linear visco…
Biaxially Oriented CdSe Nanorods
The shape, structure, and orientation of rubbing-aligned cadmium selenide (CdSe) nanorods on polymer coated glass substrates have been studied using transmission electron microscopy (TEM) and grazing incidence X-ray scattering combined with computer simulations. The nanorods are found to be of wurtzite structure and h…
Silver-Nanoparticle-Conjugated Polypeptide Brushes for Surface-Enhanced Raman Scattering
A soft surface-enhanced Raman scattering (SERS) substrate was fabricated based on a three-dimensional (3D) structure of biocompatible end-tethered poly( l -lysine) (“t-PLL”) with a brushlike configuration conjugated with silver nanoparticles (Ag NPs) (Ag NP-t-PLL film). The conjugation procedures were carefully adjust…
Multi-passband tunneling effect in multilayered Epsilon-Near-Zero Metamaterials
Recently, several experimental results verified the tunneling effect theory of that the electromagnetic energy can be squeezed through an ultra-narrow channel filled with epsilon-near-zero (ENZ) medium. However, the energy squeezing can be only achieved in a narrow region. Here, we present a full-wave simulation of th…
Application of Preferential Crystallization for Different Types of Racemic Compounds
A systematic approach was developed and applied to the preferential crystallization of a racemic-conglomerate-forming system in our previous work. In this work, we extended and modified the strategy for two typical types of racemic-compound-forming systems, namely, mandelic acid and ketoprofen, taking into account the…
Reactivity of NH4H2PO4 toward LaCl3 in LiCl-KCl Melt Flux. Step by Step Formation of Monazite-Like LaPO4.
The synthesis of lanthanum phosphates in molten LiCl-KCL eutectic was chosen to address the preliminary treatment of chlorinated wastes containing fission products that are already present in a Li/Cl eutectic. The obtained monazite compound shows interesting properties to be considered as a good candidate to trap lant…
Long-Distance Magnetic Interaction of Exchange-Coupled Copper Dimers with Nitronyl Nitroxide and tert-Butyl Nitroxide Radicals
To study long-distance magnetic interactions between exchange-coupled metal centers and coordinated radical moieties, two new homodimetallic Cu(II) complexes held together by the chelating ligand L(nPr) = N,N,N',N'-tetrakis(N-propyl-2-benzimidazolyl)-2-hydroxy-1,3-diaminopropane and additionally bridged by either a ni…
Wet-Spinning of Osmotically Stressed Silk Fibroin
Based on the phase diagram constructed for water-silk fibroin-LiBr using the osmotic stress method, wet-spinning of osmotically stressed, regenerated Bombyx mori silk fibroin was performed, without the necessity of using expensive or toxic organic solvents. The osmotic stress was applied to prestructure the regenerate…
Polyamide‐6/high‐density polyethylene blend using recycled high‐density polyethylene as compatibilizer: Morphology, mechanical properties, and thermal stability
Abstract Blends of polyamide‐6 (PA6) or postindustry polyamide‐6 (piPA6) and high‐density polyethylene (HDPE) or recycled high‐density polyethylene (rHDPE) were processed in single and twin‐screw extruders. The use of rHDPE in the blends promotes a significant decrease of size domains and improvement in the mechanical…
Octahedral Monodithiolene Complexes of Iron: Characterization of S,S′-Coordinated Dithiolate(1−) π Radical Monoanions: A Spectroscopic and Density Functional Theoretical Investigation
The reaction of cis-[Fe(III)(cyclam)Cl(2)]Cl with 1 equiv of sodium N-diethyldithiocarbamate, toluene-3,4-dithiolate, and maleonitriledithiolate in methanol in the presence of triethylamine afforded the cations [Fe(III)(cyclam)(Et(2)dtc)](2+) (1), [Fe(III)(cyclam)(tdt)](+) (2), and [Fe(III)(cyclam)(mnt)](+) (3), which…
Origin of the High Thermoelectric Performance in Si Nanowires: A First-Principle Study
First-principles calculations on the electronic, transport, and lattice vibrational behaviors of Si nanowires (SiNWs) are performed to reveal the origin of the high thermoelectric performance in SiNWs. Our results show that the power factor ( S 2 σ) of SiNWs deviate only slightly from those of bulk Si originating from…
Polyaniline Nanofiber−Metal Salt Composite Materials for Arsine Detection
We report the use of polyaniline nanofiber−metal salt composites for the detection of arsine gas (AsH 3 ) using the resistance change of the materials. Aqueous dispersions of polyaniline nanofibers facilitate the preparation of metal salt/polyaniline nanofiber composites with the use of water-soluble inorganics. Vario…
Photoswitchable Unsymmetrical Ligand for DNA Hetero‐Mismatches
Abstract Photoswitchable DNA‐binding ligands should be useful for controlling diverse biological functions involving DNA and reversible assembly of DNA‐based nanostructures. In work directed towards the development of photoswitchable ligands with various sequence specificities, we have elaborated an efficient synthesi…
Highly Luminescent ZnxCd1−xSe/C Core/Shell Nanocrystals: Large Scale Synthesis, Structural and Cathodoluminescence Studies
Zn(x)Cd(1-x)Se/C core/shell nanocrystals with 31-39 nm semiconducting core and 11-25 nm carbon shell were synthesized from solid state precursors in large scale amounts. A mixture of spherical and tripod nanostructures were obtained only in the one-step reaction (ZC3), where the Zn- and Cd-precursors were reacted simu…
Influence of montmorillonite treatment and montmorillonite dispersion state on the crystallization behavior of poly(ethylene terephthalate)/montmorillonite nanocomposites
Abstract TiO 2 /SiO 2 sol was intercalated into montmorillonite (MMT), which was pretreated with polyvinylpyrrolidone (PVP). A series of poly(ethylene terephthalate) (PET)/MMT hybrids were prepared using the obtained MMT as polycondensation catalysts. X‐ray diffraction (XRD) results proved that MMT dispersion states c…
Excitonic absorption spectra and ultrafast dephasing dynamics in arbitrary carbon nanotubes
Abstract We illustrate the potential of the density matrix theory for investigation of optical properties of arbitrary single‐walled carbon nanotubes (CNTs). We have performed microscopic calculations of excitonic absorption spectra for CNTs of different chiral angles and diameters. The obtained results are in good ag…
Effect of Pressure on the Phase Behavior and Segmental Dynamics in Blends of Polystyrene with Poly(methylphenyl siloxane)
The effect of pressure on the segmental dynamics in two symmetric blends of PMPS and PS is studied for pressures up to 250 MPa. In these blends, there is interplay between spinodal decomposition and glass transition, resulting in the enrichment of the high T g component by the more mobile component. The distinctly dif…