Materials Literature
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We present the conditions for room-temperature synthesis of bare, Ni-and Cu-doped ZnO nanocrystals in ethanol and their characterization. The formation of a ZnO host structure was delayed when dopant ions co-existed in the starting solutions. After ageing in mother liquors, well-crystallized doped nanocrystals were pr…
This paper describes the fine-tuning of the acidichromic properties of a coumarin-containing colorant 1 by incorporation of electron-donating and electron-withdrawing substituents on the coumarin moiety. Colorant 1 can undergo two distinct and reversible color changes under both strongly acidic and basic conditions, b…
Abstract Single crystal growth of the organic nonlinear optical crystal, L‐arginine trifluoroacetate (L‐Arg·CF 3 COOH, abbreviated as LATF) is reported. Low temperature solution growth method is employed for the growth of bulk single crystals. The cell parameters are verified by single crystal diffraction. Fourier tra…
Analysis of nanostructures is of increasing importance with advances of nanotechnology. Embedded nanostructures in thin films in particular are of recent interest. Grazing incident small angle x-ray scattering (GISAXS) has been recognized to be a powerful method to probe such embedded nanostructures; however, quantita…
dc magnetization, ac magnetic susceptibility, magnetic relaxation, electrical resistivity and x-ray powder-diffraction studies of ${\mathrm{Er}}_{0.75}{\mathrm{Dy}}_{0.25}{\mathrm{Al}}_{2}$ compound have been carried out in the temperature range of $5--300\phantom{\rule{0.3em}{0ex}}\mathrm{K}$. The compound orders fer…
Abstract In the present study, metronidazole was crystallized in several solvents, according to both the “cooling crystallization” and the “crystallization by non‐solvent addition”. Particle properties, such as crystal habit, elongation ratio, and mean particle size, were determined by SEM analysis. Structural changes…
Abstract Formylporphyrins were prepared by using either the 1,3‐dithian‐2‐yl residue as a precursor for the CHO group or by the Vilsmeier reaction. Two synthetic routes for the introduction of the 1,2‐dithian‐2‐yl group were explored. Furthermore, reactions of the 1,3,5‐trithian‐2‐yl group with porphyrins were examine…
The electrodeposition of oxidation resistant iridium and iridium- rhodium coatings from non-toxic chloride molten salt electrolytes is investigated. Dense, pore free coatings on graphite, carbon- carbon and rhenium substrates were obtained. Electroformed iridium and iridium rhodium alloys have a typical columnar struc…
Two silklike proteins, [TGRGDSPAGG(GAGAGS)3AS]5 (FS5) and [TGRGDSPA-(GVPGV)2GG(GAGAGS)3AS]8 (FES8) were designed to demonstrate the superior performance as biomaterials of silklike proteins. The former protein consists of the crystalline domain sequence, (GAGAGS)n from Bombyx mori silk fibroin and cell-adhesive sequen…
Ising-like phenomenological Hamiltonians for coupled lattice processes, such as spin conversion for Fe(II) complexes and concurrent ordering of solvent molecules, are considered. The model is shown to account for experimental data including the temperature dependence of magnetization data, the structural changes assoc…
Ferrofluids are attractive candidates for magnetic targeting system because of their fluidity and magnetism. The magnetic nanoparticles in ferrofluids should have combined properties of superparamagnetic behavior, target localization, and biocompatibility. The magnetic targeting and biocompatibility of superparamagnet…
Sharp melting that has been found for DNA-linked nanostructure systems such as DNA-linked gold nanoparticles enhances the resolution of DNA sequence detection enough to distinguish between a perfect match and single base pair mismatches. One intriguing explanation of the sharp melting involves the cooperative dehybrid…
The mutual solubilities and related liquid–liquid equilibria of C8–C17 alcohols with water are exhaustively and critically reviewed. Reports of experimental determination of solubility in 21 chemically distinct binary systems that appeared in the primary literature prior to the end of 2004 are compiled. For 12 systems…
The structural, electronic, vibrational, optical, magnetic, and aromatic characteristics of Si(n), Si(n) (1-), Si(n) (2-), and Si(n) (1+), clusters have been calculated very accurately with a variety of high level ab initio techniques. These calculations have been performed with the aim to clarify existing ambiguities…
Threading nanobeads: Gold nanoparticles (NPs) coated with functional organic ligands are candidate building blocks for the bottom-up fabrication of nanostructured materials. This Highlight describes a recent approach to achieving bidirectional NP–NP connectivity, which is an essential step in the assembly of NP-based…
Three perylene-3,4;9,10-tetracarboxydiimide (PTCDI) compounds with two dodecyloxy or thiododecyl chains attached at the bay positions of the perylene ring, PTCDIs 1-3, were fabricated into nanoassemblies by a solution injection method. The morphologies of these self-assembled nanostructures were determined by transmis…
The quantum ferroelectric phase transition of $^{18}\mathrm{O}$-exchanged ${\mathrm{SrTiO}}_{3}$ ($x%$ exchanged ${\mathrm{SrTiO}}_{3}$ is abbreviated as $\mathrm{STO}18\mathrm{\text{\ensuremath{-}}}x$) was investigated by Raman scattering as a function of $x$. The result indicates the ideal soft mode-type quantum fer…
A zone heating method, which imposes the moving temperature-gradient (▿ T ) field on ordering process of various melts in general, enabled to control a macroscopic orientation of microdomain structures in block copolymer bulk. We applied the method to a polystyrene- block -polyisoprene diblock copolymer forming hexago…
A ruthenium nitrosyl with 4-vinylpyridine (4-vpy) as one ligand, namely, [Ru(Me2bpb)(NO)(4-vpy)](BF4) (1), has been synthesized and structurally characterized. This diamagnetic {Ru-NO}6 nitrosyl is photoactive and readily releases NO upon exposure to low-intensity (5-10 mW) UV light (quantum yield at 300 nm = 0.18). R…
By using high-resolution X-ray powder diffraction at a dedicated synchrotron beam line, ID-31, of the European Synchrotron Radiation Facility (ESRF, Grenoble, France), we studied structural and microstructural modifications in biogenic aragonite crystals, obtained from mollusk shells, and subjected to heat treatments…