Materials Literature
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Yb3+Er3+-codoped chloride-modified germanate-bismuth-lead glasses have been synthesized by the conventional melting and quenching method. Structural and thermal stability properties have been obtained on the basis of the Raman spectra and differential thermal analysis, which indicate that the PbCl2 addition has an imp…
Abstract A computer program is introduced that evaluates the parameters of binary copolymerizations from comonomer/copolymer composition data as obtained from polymerization experiments with finite monomer conversion. The program numerically integrates a given copolymerization equation in its differential form and can…
An experimental method is presented for determining the orientation distribution function (ODF) for individual grains within deformed polycrystals. The non-destructive method is based on diffraction with monochromatic hard X-rays. First the detected diffraction spots are sorted with respect to their grain of origin. N…
Abstract Mesoporous silica is used as filler for styrene-butadiene rubber (SBR); filler-polymer interactions are compared with those exhibited when Ultrasil silica (VN3) is used. A silane coupling agent is added to improve filler dispersion and its influence on the bound-rubber formation is also investigated. The boun…
XPS measurements of poly(pyrrole) recorded with a SSX-100 spectrometer in standardized experimental conditions are presented: survey scan, high resolution core level spectra as well as the energy loss regions of carbon, nitrogen and oxygen peaks are analyzed. This is part of a contract work aiming to record spectra in…
Abstract We present results of electronic structure calculations for the intermetallic perovskite Sc 3 InB with the full‐potential KKR‐LDA method. Sc 3 InB is a very promising candidate for a new superconductor (related to 8 K MgCNi 3 ) and can be regarded as a boron‐inserted cubic Sc 3 In, which is a high‐pressure al…
Use of pH-sensitive crosslinked poly(acrylic acid) polymer has been proposed as a novel in-depth conformance control system for improved oil recovery. The polymer forms a soft and flexible microgel with a molecular network structure in aqueous solution. When dispersed, it becomes acidic and exists in an unswelled and…
The electro-optic properties of a multi-domain in-plane switching liquid crystal display (IPS LCD) are investigated through a three-dimensional (3-D) simulator, which combines the finite element and finite difference methods for fast solutions. The bending angle between the chevron-shaped electrodes makes an important…
A higher generation dendron with a long-alkyl chain thiol (DA2-SH) induced the formation of nanoparticles with a small core with quite a narrow size distribution (1.5 +/- 0.1 nm), the self-assembly of one-dimensional arrays of these gold nanoparticles (DA2-Au), and the stabilization for the formation of the radical ca…
The phonon propagation and damping along the axial direction of films of aligned 40 wt % calf-thymus DNA rods are studied by inelastic x-ray scattering (IXS). The IXS spectra are analyzed with the generalized three effective eigenmode theory, from which we extract the dynamic structure factor S(Q,E) as a function of t…
Doubly N -confused dioxohexaphyrins were characterized by cyclic voltammetry and spectroelectrochemistry in the -2.5 to +2.0 V vs Ag | Ag + (0.10 M, in CH 3 CN) range. Six reversible monoelectronic processes were found suggesting that the rich electrochemistry of porphyrin systems was preserved in that expanded macroc…
This paper designs a new multilayered particle anisotropic conductive film (ACF) compound. Using the particle-reinforced composite model and probability theory, the novel ACF compound is compared with three traditional ACFs having the same particle volume fraction. The particle-reinforced model applies the concept of…
Abstract Layered double hydroxide (LDH)‐supported nanoplatinum(0) and nanopalladium(0) catalysts were prepared by a simple ion exchange technique and subsequent reduction with hydrazine hydrate and used for the allylation of aldehydes to give moderate to good yields of homoallylic alcohols. Detailed mechanistic studie…
XPS measurements of poly(caprolactone) recorded with a SSX-100 spectrometer in standardized experimental conditions are presented: survey scan, high resolution core level spectra as well as the energy loss regions of carbon and oxygen peaks are analyzed. This is part of a contract work aiming to record spectra in the…
Three new C(21)-steroidal glycosides stemucronatosides H, I, and J (1-3, resp.) were isolated from the stems of Stephanotis mucronata, together with three known compounds sinomarinoside A (4), sinomarinoside E (5), and stephanoside H (6). These isolated compounds were tested for their immunological activities in vitro…
Abstract A series of aromatic thermotropic liquid crystalline copolyester (TLCP) nanocomposites were prepared by the in situ intercalation polymerization of p ‐acetoxybenzoic acid (ABA), terephthalic acid (TPA), and diacetoxynaphthalene (DAN) isomers in the presence of the organoclay. The DAN isomers used in this stud…
The DNA‐multiwalled carbon nanotube (MWCNT) bioconjugates were prepared by dispersing MWCNTs in calf thymus single‐stranded (ss‐) or double‐stranded (ds‐) DNA aqueous solution. The electrochemical behaviors of daunorubicin (DNR) at ssDNA and dsDNA‐MWCNT bioconjugates‐modified glassy carbon electrodes (GCEs) were studi…
XPS measurements of poly(ethylene terephthalate) recorded with a SSX-100 spectrometer in standardized experimental conditions are presented: survey scan, high resolution core level spectra as well as the energy loss regions of carbon and oxygen peaks are analyzed.
XPS measurements of nylon 6 recorded with a SSX-100 spectrometer in standardized experimental conditions are presented: survey scan, high resolution core level spectra as well as the energy loss regions of carbon, oxygen, and nitrogen peaks are analyzed. This is part of a contract work aiming to record spectra in the…
For nano-structured solids (those with one or more dimensions in the 1–100 nm range), attempts of surface modification can pose significant and new challenges. In traditional materials, the surface coating could be several hundreds nanometers in thickness, or even microns and millimeters. In a nano-structured material…