Materials Literature
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This work investigates the correlation of topography, morphology, and optical properties between a rough substrate and the coatings covering it. A model substrate (YUPO((R)) film, "synthetic paper") was coated with increasing amounts of rod-like precipitated calcium carbonate (PCC) pigment. A versatile roughness analy…
The main effort in the area of crystallization for structural genomics is currently being invested in automation of high-throughput screening procedures to identify potential crystallization conditions. However, screening in itself, even in massive quantities, is not enough; it has to be complemented by an equally imp…
This investigation focuses on the synthesis and characterization of an intumescent flame-retardant (IFR) agent. Three steps are used in the synthesis process. Meanwhile, the structure is characterized by Fourier transform infrared spectroscopy (FTIR), magic-angle spinning nuclear magnetic resonance (MAS-NMR) 13 C spec…
Current methods for new materials development focus on either deeper fundamental-level studies or generation of large quantities of data. The data challenge in materials science is not only the volume of data being generated by many independent investigators, but its heterogeneity and also its complexity that must be…
The Ni nanowires with different diameters were prepared by direct-current electrodeposition into the pores of porous anodic alumina membrane. The growth orientation of Ni nanowires with different diameters can be along [110] or [111] direction by adjusting the electrodeposition conditions. The micrographs and crystal…
Meta-distributed amplifiers (MDAs) constitute a novel class of distributed amplifiers based on the active coupling of two composite-right/left handed transmission lines, and can provide dual-band amplification at two different physical ports. In this contribution, the dual-band gain and noise performance of such activ…
The use of phase separation in block copolymer systems to generate regular nanopatterns at surfaces may be an alternative to advanced photolithography. Here, substrates with photolithographically defined rectangular channels (of depth 60 nm and widths 166-433 nm) are used to direct nanoscale phase separation of a poly…
Although autogenous vessels are useful in surgery, often patients cannot furnish suitable vessels. If there are not available, two possible alternatives for vessel replacements are to use vascular synthetic prostheses such as Dacron((R)) and polytetrafluoroethylene (PTFE) or cryopreserved allografts. However, their su…
With the objective of tuning the lipophilicity of ligands and maintaining the neutrality and stability of Gd(III) chelate, we designed and synthesized two bis(amide) derivatives of TTDA, TTDA-BMA and TTDA-BBA, and a mono(amide) derivative, TTDA-N-MOBA. The ligand protonation constants and complex stability constants f…
A NADPH substitute where the nicotinamide moiety is replaced by a chromophoric unit having much larger two-photon absorption cross-section and able to transfer electrons to flavins only upon excitation is described as an effective two-photon nanotrigger for selective photo-activation of electron transfer in bioreducti…
Novel amphiphilic conjugates consisting of an Arg-Gly-Asp (RGD) peptide binding motif and aliphatic fatty acids of varying chain length (C10-C18) were synthesized and evaluated for their ability to form micelles and bind specifically to alphaVbeta3 integrin over-expressing tumor cells. The aphilphiles were characteriz…
A new method is introduced to analyze lossy Inhomogeneous Planar Layers (IPLs) for both TE and TM polarizations. In this method, the integral equations of the IPLs, converted from their differential equations, are solved using the method of moments (MOM). It is assumed that the primary parameters are known at all or o…
The matrix synthesis of polyaniline in the presence of water-soluble aromatic polyamides containing sulfo acid groups has been studied. It has been shown that the nature of polyacid and the concentration of reagents affect the shape and dynamics of a change in absorption spectra. The S-shaped profile of kinetic curves…
The reaction of Hg(CF3CO2)2 with metalloporphyrins produces mercurated porphyrins regioselectively, the reaction, surprisingly occurring at the most hindered betaB-position; this behavior is in marked contrast to the usual electrophilic substitution reactions of porphyrins, whose reactions produce meso-substituted por…
The structural aspects and host–guest binding properties of ionic core–shell dendrimers [1]Br8 and [2]Br4, which bear a polycationic core and a neutral shell of Fréchet-type poly(benzyl aryl ether) dendrons, have been investigated by means of dendritic wedges [3]Br2 and [4]Br, that resemble one of the four wedges of t…
The interaction between hindered amine light stabilizers (HALS), and ultraviolet absorbers (UVA) was investigated, in order to clarify the reason why they generally show synergism, although UVA belong to kinds of phenols. A homolytic decomposition of cumene hydroperoxide (CHP) by amine-type HALS (HALS NH) in the prese…
BN-doped carbon blacks were prepared by mechanochemical alloying of a carbon black and h-BN (h-BN doping ratio: 0-50 at%). The structure, the surface chemical states and the catalytic activity for an electrochemical oxygen reduction reaction of the prepared carbons were investigated. XRD and TEM studies revealed the f…
Surfaces of biomaterials often do not have the ideal properties for direct application in vivo. Although titanium and its alloys show a good biocompatibility, in some applications there is still need to improve the osteoblast adhesion to titanium implants. A polymeric surface coating is an ideal solution because the p…
The morphology and dynamic mechanical properties of poly(acrylonitrile-butadienestyrene) (ABS)/polycarbonate (PC)/clay nanocomposites were investigated. From the studies of the transmission electron microscopy (TEM) analysis of the ABS/PC (70/30 wt%) nanocomposites with clay, it was observed that most of the clay exis…
A stable polyradical carrying aminoxyls in the π-conjugated main chain was synthesized and its through-bond spin interaction was investigated. The polyradical is constructed with 1,3-phenylene as a spin coupler and 9,9-di-n-propyl-9,10-dihydroacridin-10-yloxy as a stable spin source. The synthetic method of the spin s…