Materials Literature
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The crystalline structures, magnetisms, and magnetotransport properties of ${\mathrm{La}}_{0.7}{\mathrm{Sr}}_{0.3}\mathrm{Mn}{\mathrm{O}}_{3}∕\mathrm{Sr}\mathrm{Ti}{\mathrm{O}}_{3}$ (LSMO/STO) superlattices and ${\mathrm{La}}_{0.7}{\mathrm{Sr}}_{0.3}\mathrm{Mn}{\mathrm{O}}_{3}$ (LSMO) films are studied. The transmissi…
Novel cationic porphyrin derivatives having a galactose or a bis(isopropylidene)galactose unit linked directly to a pyridine or to an aminophenyl group were characterized by electrospray tandem mass spectrometry (ESI-MS/MS). The electrospray mass spectra (ESI-MS) show the M(+) ions, since these porphyrins are already…
Different grades of starch, glycerol, and water were blended in order to produce a series of thermoplastic starch materials. The starch grades used included native potato starch and modified grades of native potato starch, high amylose potato starch, and amylopectin potato starch. The modification of the latter three…
You light up my life! Antibodies, when bound to a donor–acceptor-substituted stilbene, strongly fluoresce with colors ranging from blue to green. Photophysical and structural analyses indicate that antibody binding alters the excited-state behavior of stilbene. Such complexes may find in vitro and in vivo application…
Abstract Summary: P(TT‐ co ‐TI)s with up to 20 mol‐% of TI units were synthesized in order to modulate the thermal and mechanical properties of PTT and were characterized by FT‐IR, 1 H NMR, DSC, and DMA analysis. PTI and PTT were also synthesized for the purpose of comparison. The polymerizations proceeded via two ste…
The lithium vanadophosphate (LVP) glasses were synthesized through a conventional melt quench method for various modifier ( m ) to formers ( f ) ratios ( m / f ) [ m %Li 2 O/ f %{0.3V 2 O 5 +0.7P 2 O 5 }, where the m / f =0.43, 0.66, 1.0, 1.5, and 1.63]. Nature, structure, and glass transition T g temperature for the…
When a local mechanical perturbation is applied to the surface of a thin film of a mechanically interlocked molecule (a rotaxane), the molecules self-organize into periodic arrays of discrete dots or lines. The dimensionality of the nanostructures depends on whether the mechanical stimulus acts along a 1D line or over…
Isolated and complex: La2MgNi2H8 contains isolated dinuclear [Ni2H7]7− and tetranuclear [Ni4H12]12− anions (see picture). These are the first polynuclear solid-state nickel hydride complexes. Their formation upon hydrogenation of the intermetallic compound La2MgNi2 is associated with a metal–insulator transition.
A novel nanostructure of a side-to-side SnO 2 /ZnO/SnO 2 triaxial nanobelt has been achieved via a simple oxidation of the separated Zn and Sn powders. Each nanobelt has a broad inner ribbon of ZnO with two symmetric SnO 2 sides, and all of the belts are single crystal. This composite structure demonstrates the possib…
Calcium carbonate was crystallized on an eggshell membrane using a specially designed crystallizer. The crystallizer used was a jacketed cylindrical glass vessel with two compartments divided by an eggshell membrane. The calcium chloride and sodium carbonate solutions were separately placed in the two compartments. Se…
A new luminescent microporous terbium silicate Na3TbSi3O9·3H2O (TbSiO-CJ1) has been synthesized under mild hydrothermal conditions; its structure consists of helical sechser silicate chains, which are connected by TbO6 octahedra to form an open framework containing 9-ring channels along the [100] direction.
The phase transition between the ferroelectric and relaxor states for $0.8\mathrm{Pb}({\mathrm{Mg}}_{1∕3}{\mathrm{Nb}}_{2∕3}){\mathrm{O}}_{3}\text{\ensuremath{-}}0.2\mathrm{Pb}\mathrm{Ti}{\mathrm{O}}_{3}$ ceramics with high chemical homogeneity has been studied by measurements of the dielectric and elastic properties…
Verdrillte Röhren: Die Selbstorganisation kleiner organischer Moleküle ist ein neuer Syntheseansatz für Nanoröhren mit helicaler Chiralität. Aminosäurederivate von Naphthalindiimid bilden in Lösung wie im festen Zustand solche Assoziate. Die Chiralität der Nanoröhren wird durch die Aminosäure festgelegt, hängt aber ni…
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A type of magnetic metamaterial which exhibits strong magnetic activity within and below the optical region is presented. The metamaterial consists of semiconductor nanoparticles such as $\mathrm{CuCl}$ or ${\mathrm{Cu}}_{2}\mathrm{O}$ particles. The magnetic activity is attributed to the strong oscillator strength st…
We have modulated the anisotropic magnetoresistance (AMR) in $3--4\phantom{\rule{0.3em}{0ex}}\mathrm{nm}$ manganite films using the ferroelectric field effect---a method that electrostatically varies the carrier density without affecting the lattice distortion. While significant changes have been induced in ${T}_{C}$…
We present a theoretical analysis of the current-voltage characteristics of a ballistic superconductor-normal-superconductor (SNS) junction, in which a strip of graphene is coupled to two superconducting electrodes. We focus in the short-junction regime, where the length of the strip is much smaller than superconducti…
Barium titanate (BaTiO 3 ) nanoparticles are synthesized under N 2 atmosphere by the hydrolysis and condensation of barium hydroxide octahydrate and titanium (IV) isopropoxide with controlled water addition. With increasing the amount of water addition, the primary nanoparticles tend to grow from 7.5 to 68.5 nm in ave…
High-quality red-emitting CdSe quantum dots were synthesized by a microwave-assisted heating method in which the particle size was controlled mainly by changing reaction temperatures from 190 to 270 °C. The prepared samples were characterized by XRD, UV−Vis, photoluminescence, and TEM methods. The particle sizes range…
Highly active Rh-based living polymerization catalysts were developed, which enabled the synthesis of poly(phenylacetylene) with high molecular weight and narrow molecular weight distributions (e.g., M n = 195 000, M w / M n = 1.06). For instance, a Rh-based ternary catalyst system composed of [(tfb)RhCl] 2 ( 1 ) (tfb…