Materials Literature
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In this work, we synthesized ZnO nanorods by a wet chemical process. By varying different parameters of the synthesis process like precursor concentration, solvent used, surfactant, temperature, and reaction time, we were able to control the aspect ratio ( l / d ) and sharpness factor ( S f = h / b ) of the rods. Rods…
We study multiple exciton generation (MEG) in electronically coupled films of PbSe quantum dots (QDs) employing ultrafast time-resolved transient absorption spectroscopy. We demonstrate that the MEG efficiency in PbSe does not decrease when the QDs are treated with hydrazine, which has been shown to greatly enhance ca…
We present a general approach for the targeting and imaging of cancer cells using dendrimer-entrapped gold nanoparticles (Au DENPs). Au DENPs were found to be able to covalently link with targeting and imaging ligands for subsequent cancer-cell targeting and imaging. The Au DENPs linked with defined numbers of folic a…
Current computed tomography (CT) contrast agents such as iodine-based compounds have several limitations, including short imaging times due to rapid renal clearance, renal toxicity, and vascular permeation. Here, we describe a new CT contrast agent based on gold nanoparticles (GNPs) that overcomes these limitations. B…
There have been two previous structure determinations of the title compound, Na2WO4·2H2O: in 1969 [Mitra & Verma (1969). Indian J. Chem. 7, 598–602] and in 1974 [Okada et al. (1974a). Bull. Tokyo Inst. Technol. 120, 7–11]. However, both structures are incorrect according to their entries in the Inorganic Crystal Struc…
Collagen fibrils exhibit noticeable differences in their molecular order in the direction perpendicular to fibril axis. For instance, three‐dimensional crystallinity prevails for type I collagen (e.g. tendons) whereas only liquid‐like order in the lateral direction prevails for type II collagen (e.g. cartilage). The l…
Two novel photoreversible poly(ferrocenylsilanes) (PFS) with coumarin side groups, i.e., half- and whole-substituted poly(ferrocenyl(3-(7-hydroxycoumarin) propyl)methylsilane), are synthesized by transition metal-catalyzed ring-opening polymerization of ferrocenyl(3-chloropropyl) methylsilane monomer and subsequent gr…
Summary The structure of the emulsion droplet aggregates in whey‐protein‐stabilised oil‐in‐water (o/w) model emulsion gels was investigated using the novel spin‐echo small‐angle neutron scattering (SESANS) technique. This technique allows the assessment of the droplet cluster structure in an emulsion gel in terms of a…
The formation and quadratic nonlinearity of a multiple hydrogen-bonded 1:1 supramolecular complex 1.2 between the 2,6-diaminopyridine-based Lambda-shaped molecule, 1, and ferrocenyl barbituric acid, 2, in solution have been investigated by the hyper-Rayleigh scattering (HRS) and NMR techniques. A 6-fold increase in th…
Uniaxially oriented polypropylene (PP) is molten in the synchrotron beam and crystallized from the quiescent melt, keeping its orientation in order to study the mechanisms of its crystallization. We document the different nanostructures observed as a function of melt-annealing temperature, undercooling, and time. In o…
Inorganic compound HAuCl4, which can form a complex with pyridine, is introduced into a poly(styrene-block-2-vinylpyridine) (PS-b-P2VP) block copolymer/poly(methyl methacrylate) (PMMA) homopolymer mixture. The orientation of the cylindrical microdomains formed by the P2VP block, PMMA, and HAuCl4 normal to the substrat…
The chemical stability of SrFeO 3 ‐based perovskites in H 2 O‐ and CO 2 ‐containing atmospheres at high temperatures and pressures has been examined. The extent of reaction as a function of p CO 2 , p H 2 O, temperature, and time has been determined. Either strontium carbonate or Sr(OH) 2 ·H 2 O was observed on sample…
The adsorptive properties of hydrotalcite, Mg 6 Al 2 (OH) 16 CO 3 · x H 2 O (HT) and the calcined product, Mg 3 AlO 4 (OH) (HTC) for tannin were investigated. The adsorbents were characterized by means of chemical analyses, X-ray diffraction (XRD), potentiometric titration, and surface area analyzer (N 2 adsorption−de…
In this study, SP1, a ring-shaped highly stable homododecamer protein complex was utilized for the self-assembly of multiple domains in a predefined manner. Glucose oxidase (GOx) was fused in-frame to SP1 and expressed in Escherichia coli. Complexes where GOx encircled SP1 dodecamer were observed, and moreover, the en…
Motivated by the observation of confinement effects for the poly(ethylene oxide) (PEO) component in the dynamically asymmetric blend with poly(vinyl acetate) (PVAc), 80% PVAc/20% PEO ( Macromolecules, 2006, 39, 3007), we have investigated the dynamics of the PVAc component in this blend. Quasielastic neutron scatterin…
Hydrogen‐bonded analogues of recently reported biaxial nematic oxadiazoles have been prepared. These are obtained by having oxadiazole derivatized with either one or two pyridines, leading either to symmetric or unsymmetric materials complexed using several different benzoic acids. The new materials were studied by op…
Normally the size dependence of the chemical potential is used to explain the growth dynamics of semiconductor nanoparticles. Instead we show that very small CdTe nanoparticles continue to grow at high dilution, the growth rate is virtually independent of monomer concentration, nucleation continues after the growth of…
Wettability improvement and bioactive interface designing of poly(dimethylsiloxane) (PDMS) are keen for its application in biodevices. Herein we developed a fully biocompatible approach for achieving stable hydrophilic surfaces by modifying PDMS with hydrophobins. X-ray photoelectron spectroscopy (XPS), water contact…
High-stability sensing of proteins of pig serum albumin (PSA) was achieved using an insulator-covered carbon-nanotube field-effect transistor (CNT-FET) with a top-gate structure. The sensitivity limit of this CNT-FET PSA sensor is at least 5 nmol/L PSA solution. A layer of silicon nitride deposited on the top-gate str…
Several nanostructured manganese oxides with novel shapes were controllably synthesized from the same precursor Na−BirMO via a facile, direct hydrothermal or surging method. The synthesis parameters for nanostructured manganese oxides were investigated, along with their influences on structure, morphology, composition…