Materials Literature
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Using reflectance and excitation spectroscopy, host-to-Eu 3+ energy transfer efficiencies in YBO 3:Gd,Eu under vacuum ultraviolet excitation have been calculated, at various concentrations of both dopants. As the Gd 3+ concentration is increased, an increase in the transfer efficiency to Eu 3+ is observed, consistent…
PURPOSE: The evaluation of the diagnostic capability of easy to measure x-ray scattering profile characterization parameters for the detection of breast cancer in excised samples. The selected parameters are the full width at half maximum (FWHM) and area under the x-ray scattering profile of breast tissue in addition…
This study reports on the influence of nonionic cosolvents on the interfacial structure of ribonuclease A (RNase) adsorbed at the air-water interface. We applied X-ray reflectometry to obtain detailed volume fraction profiles of the adsorbed layers and to follow the effect of glycerol and urea on the adsorbate structu…
Electrochemical investigations of 1,2,4-triazole and benzotriazole in aqueous acidic media has been carried out by cyclic voltammetric measurements. Cyclic voltammetric experiments were carried on glassy carbon (GC) working electrode. Effect of potential scan rate, pH of the solution and use of different surfactant on…
Here we demonstrate, for the first time, the heterogeneous nucleation and growth of silver patches on submicrometer silica spheres. While patches can be grown directly onto native silica particles, it is shown that a higher patch yield can be obtained by first treating the silica with a mixture of an alkanolamine and…
We have characterized the previously undescribed parameters for engineering the electrical properties of single-walled carbon nanotube (SWCNT) films for technological applications. First, the interfacial tension between bare SWCNT network films and a top coating passivation material was shown to dictate the variabilit…
The growth of highly faceted PbSe microcrystals from the aerosol-assisted chemical vapor deposition (CVD) of novel lead phosphonodiselenoato compounds (Pb[Ph(RO)PSe 2 ] 2, where R is a methyl group (Me) ( 1 ) or an ethyl group (Et) ( 2 )) is reported. This is the first such example of growth using a CVD technique. As-…
The structure-reactivity relationships in metalation reactions of porphyrinoids have been studied using experimental and theoretical methods. A series of eight porphyrinoic ligands, derivatives of chlorophylls, was prepared in which both the peripheral groups and the degrees of saturation of the macrocycle were system…
A facile method for constructing superhydrophobic, conductive, and transparent/translucent coatings is presented. Pristine multiwalled carbon nanotubes (MWNTs) are first noncovalently (wrapped) modified by an organic-inorganic hybrid of an amphiphilic copolymer of styrene and maleic anhydride and silica with the exist…
Pulp and paper sludge can be recycled in the manufacture of medium-density fiberboard (MDF) because it contains wood fibers.A comparative study was conducted to evaluate the properties of MDF made from virgin fibers mixed with different pulp and paper sludge sources.A factorial design was used in which factors were mi…
Abstract A diverse‐stimuli responsive chemiluminescent system, SNS‐Lum, and its electropolymerization to give PSNS‐Lum, which is the first example of conjugated polymers with pendant luminol arms inducing chemiluminescence in the presence of super oxide radical anion under neutral conditions, are highlighted.
Structural, spectroscopic, and electronic features of weak hydrogen-bonded complexes of CpM(CO)(3)H (M = Mo (1a), W (1b)) hydrides with organic bases (phosphine oxides R(3)PO (R = n-C(8)H(17), NMe(2)), amines NMe(3), NEt(3), and pyridine) are determined experimentally (variable temperature IR) and computationally (DFT…
Polycarboxylate molecules and oligomers have been investigated as growth modifiers during seeded calcite precipitation. To better understand possible molecular interactions and kinetic effects, additives with different structures and molecular weights have been investigated in this work. All additives show growth modi…
Nanofibers were isolated from bagasse pulp pretreated with dilute hydrochloric acid, dilute sodium hydroxide, cellulase, or xylanase enzymes using high-shear ultrafine grinding and high-pressure homogenization.The effect of the different pretreatments on chemical composition and structure of isolated nanofibers was st…
Abstract The influence of defects induced by electron or ion beam lithography in the pre‐surface region of the substrate on optical properties of plasmonic nanoparticles is analyzed. It is demonstrated that electron hopping between the defect sites of closely located nanoparticles is probable. The effect of electron t…
The formation of graphen-nanotube composites addresses a few basic problems.First, both partners are good donors and acceptors of electrons, which significantly complicates the intermolecular interaction between them leading to a twowell shape of the ground state energy term.The second problem concerns odd-electron ch…
A new approach for creating flexible, mechanically strong poly(amic acid) (PAA) hybrid copolymers is described. The reduction of gold salts to gold nanoparticles by PAA coupled with its copolymerization in the presence of various silanes (e.g., N-[3-(trimethoxysilyl)-propyl] aniline (TMOSPA), 3-aminopropyl-trimethoxys…
Polymers films are attractive, in part, because their physical properties can be tuned by blending polymer with complementary characteristics. However, blending is typically challenging because most polymers will undergo phase separation, resulting in unpredictable behavior. Here, we introduce band excitation nanother…
The excellent wetting and spreading behavior of superspreader solutions has been known and extensively studied over recent years. However, explanations for wetting dynamics and accompanying mathematical models have not yet proved completely successful. Many attempts have been made to quantify the time exponents, but n…
A novel kind of Dy(III) complex with 2-mercaptobenzimidazole was prepared. The antioxidative properties and mechanisms of the Dy(III) complex in the NR vulcanizates were investigated by attenuated total-reflectance Fourier transform infrared (FTIR-ATR) spectroscopy, crosslinking density determination, mechanical prope…