Materials Literature
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Fluconazole poly(D,L-lactic) acid (PLA) and poly(L-lactic) acid (L-PLA) implantable delivery rods were studied, in vitro and in vivo, as an alternative treatment of fungal osteomyelitis. Implantable rods loaded with 5% fluconazole (FLU) were prepared by the injection-molding method and sterilized by gamma-irradiation…
Dynamics of ${\mathrm{Ag}}^{+}$ ions in ${\mathrm{Ag}}_{2}\mathrm{S}$-doped ${\mathrm{AgPO}}_{3}$ glasses have been studied in the frequency range $10\phantom{\rule{0.3em}{0ex}}\mathrm{Hz}$ to $2\phantom{\rule{0.3em}{0ex}}\mathrm{MHz}$ and in the temperature range $93--323\phantom{\rule{0.3em}{0ex}}\mathrm{K}$. The co…
The luminescence-quenching processes limiting quantum efficiency in Er-doped silicon nanocluster light-emitting devices are investigated and identified. It is found that carrier injection, while needed to excite Er ions through electron-hole recombination, at the same time produces an efficient nonradiative Auger deex…
In this work, we demonstrate that surface charge can be used to modulate cell adhesion/spreading through the control of the orientation of adsorbed FnIII(7-10), which is a cell-adhesive protein containing RGD residues. Carboxylic acid (COOH) and amine (NH(2))-terminated self-assembled monolayers (SAMs) of alkanethiola…
Fibers of polyelectrolyte complexes incorporated in silica are synthesized by combining the polymerization of hydrolyzed tetraethylorthosilicate with the process of interfacial polyelectrolyte complexation. The resulting fibers are hydro-entangled to successfully produce porous scaffolds that act as a platform for the…
Following an outline of the transmission electron microscope (TEM) and its working principles, this chapter starts with a description of specimen preparation methods for EM imaging, including negative staining, glucose embedment and ice embedment. The principle of image formation in the TEM is described as it pertains…
A series of experiments was carried out to describe the evolution of light-induced anchoring in dye-doped nematic liquid crystals (LCs) at irradiation with polarized light. The experiments included cells filled with a pure pentyl-cyanobiphenyl (5CB) and containing a layer of azo dye deposited on an aligning film, as w…
We describe the synthesis and self-assembly of two beta-sheet forming metallopolymer-peptide conjugates. The ability of the oligotetrapeptide sequence Gly-Ala-Gly-Ala (GAGA) to form antiparallel beta-sheets was retained in PFS-b-AGAG (PFS = polyferrocenylsilane) and PFS-g-AGAG conjugates with block and graft architect…
RuO2 nanotubes with diameters of 15–25 nm and up to 3 μm in length have been prepared by the thermal decomposition of Ru3(CO)12 inside alumina templates. The RuO2 (110) planes grow along the long axis of the straight crystalline nanotubes. The growth of these fluorescent nanotubes appears to have proceeded via mononuc…
The synthesis and detailed characterization of a few samples of the compound Rb x Mn[Fe(CN) 6 ] y · z H 2 O are described. The composition of the materials significantly depends on the applied preparative conditions. Analysis of spectroscopic results (FTIR, Raman, 57 Fe Mössbauer, XPS) and X-ray powder-diffraction dat…
The reaction of the isostructural anions of group 13 hydrides EH4- (E = B, Al, Ga) with proton donors of different strength (CH3OH, CF3CH2OH, and CF3OH) was studied with different theoretical methods [DFT/B3LYP and second-order Møller-Plesset (MP2) using the 6-311++G(d,p) basis set]. The results show the general mecha…
A sol–gel-based strategy for the production of mesoporous, nanostructured, single-phase La9.33Si6O26 apatite in an aerogel-type framework is reported (see Figure). The crystallization temperature of these nanoarchitectures is low (800 °C), thus preventing detrimental particle growth. This morphology allows sintering t…
Pearl-necklace-structured CNT/Co nanocomposite powders, with spherical Co nanoparticles threaded by penetrating CNTs, have been fabricated using a molecular process. The nanocomposite powders have been screen-printed and sintered into CNT-implanted Co nanocomposite emitters, with the CNTs standing upright on the surfa…
The origin of the very low and glasslike lattice thermal conductivity $({\ensuremath{\kappa}}_{L})$ in highly crystalline clathrates has been intensely discussed. Guest atom tunneling, guest atom resonant scattering, disorder scattering, and soft potentials have been proposed as possible explanations. However, none of…
Block-copolymer-like supramolecules (see Figure) permit thermal tuning of the microphase period due to reversible supramolecular assembly and disassembly. The supramolecular system based on a binary end-functionalized blend forming diblock- and triblock-like supramolecules shows that the lamellar microphase upon heati…
We have investigated the vapor phase growth of Au on SrTiO3(001)-(2 x 1) substrates by UHV scanning tunneling microscopy. Submonolayer (ML) coverages below 300 degrees C wet the surface as disordered metastable 2D islands. Beyond 0.75 ML fcc nanocrystals with a (111) interface are nucleated and ripen by dewetting the…
Abstract In this study, we grafted water‐soluble biocompatible polymer, poly( N ‐(2‐hydroxypropyl)methacrylamide) (PHPMA), onto the surface of multi‐walled carbon nanotubes (MWNTs). The reversible addition‐fragmentation chain transfer (RAFT) agents, dithioesters, were successfully immobilized onto the surface of MWNTs…
Amino acid ester substituted polyphosphazenes are attractive candidates for various biomedical applications because of their biocompatibility, controllable hydrolytic degradation rates, and nontoxic degradation products. In this study, the biocompatibility of three L-alanine ethyl ester functionalized polyphosphazenes…
Graft copolymers were designed that self-assemble into hydrogels mediated by the interaction of coiled-coil peptide domains. A linear hydrophilic polymer of HPMA was chosen as the backbone, and coiled-coil forming peptides, covalently attached to the backbone, formed the grafts. Microrheology was used to evaluate the…
Collagen treatment: Gold nanoparticles conjugated with collagen mimetic peptide (CMP) form stable adducts with collagen fibers (see picture) that are visible by transmission electron microscopy, thereby allowing the study of binding interactions between CMPs and type I collagen fibers. This labeling technique may pote…