Materials Literature
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Dipolar interaction between the metal ion and proximate water molecules represents an efficient mechanism for solvent relaxation in Gd3+ complexes currently employed as MRI contrast agents. Besides inner sphere (metal bound) and outer sphere hydration molecules, a well-defined second coordination shell may provide an…
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTMolecular Limit of a Bulk Semiconductor: Size Dependence of the "Band Gap" in CdSe Cluster MoleculesV. N. Soloviev, A. Eichhöfer, D. Fenske, and U. BaninView Author Information Department of Physical Chemistry and the Farkas Center for Light Induced Processes The Hebre…
Water soluble thiol capped CdTe nanocrystals are assembled into ultrathin films in combination with poly(diallyldimethylammonium chloride) (PDDA) by the self-assembly method of layer-by-layer adsorption of oppositely charged polyelectrolytes. Electroluminescent devices, which produce different color emissions, are fab…
A study of the complex permittivity in bismuth titanate was conducted to reveal the nature of an anomaly in the real part of the permittivity, which occurs below the Curie temperature. This anomaly is frequency dependent and is caused by a combination of two relaxation phenomena that appear in the imaginary part of th…
The high intensity of third-generation X-ray sources, along with the development of cryo-cooling of protein crystals at temperatures around 100 K, have made it possible to extend the diffraction limit of crystals and to reduce their size. However, even with cryo-cooled crystals, radiation damage becomes a limiting fac…
We have investigated the field emission properties of nanotube thin films deposited by a plasma enhanced chemical vapor deposition process from 2% CH4 in H2 atmosphere. Depending on the deposition of the metallic catalyst [Fe(NO3)3 in an ethanol solution or sputtered Ni] the nanotube films showed a nested or continuou…
ABSTRACT: The physicochemical differences between pork and fish gelatin and the effect of melting point on the sensory characteristics of a gelatin‐water gel were investigated. Gelatin gel strength (measured as Bloom) and melting point of gelatin gels were measured, and quantitative descriptive analysis sensory tests…
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTA High-Spin Cyanide-Bridged Mn9W6 Cluster (S = 39/2) with a Full-Capped Cubane StructureZhuang Jin Zhong, Hidetake Seino, Yasushi Mizobe, Masanobu Hidai, Akira Fujishima, Shin-ichi Ohkoshi, and Kazuhito HashimotoView Author Information Kanagawa Academy of Science and T…
Mesoporous carbon materials are desirable electrode materials and are also useful for the separation of bulky organics. In this article, the templated synthesis of a new high surface area mesoporous carbon using hexagonal mesoporous silica (HMS) aluminosilicate is reported. Preliminary results on the electrochemical d…
Abstract X-ray diffraction is used widely for quantitative analysis of geological samples but studies which document the accuracy of the methods employed are not numerous. Synthetic sandstones of known composition are used to compare a ‘routine application’ of a Rietveld and a reference intensity ratio (RIR) method of…
Crystal structures and ferroelectric properties of a series of Bi-layered compounds, ${\mathrm{CaBi}}_{2}{\mathrm{Ta}}_{2}{\mathrm{O}}_{9},$ ${\mathrm{SrBi}}_{2}{\mathrm{Ta}}_{2}{\mathrm{O}}_{9},$ and ${\mathrm{BaBi}}_{2}{\mathrm{Ta}}_{2}{\mathrm{O}}_{9},$ were investigated. The structures of ${\mathrm{CaBi}}_{2}{\mat…
Effect of confinement is investigated on optical phonons of different symmetries in the nanoparticles of zinc oxide with wurtzite structure using Raman spectroscopy. An optical phonon confinement model is used for calculating the theoretical line shapes, which exhibit different asymmetric broadening and shifts, depend…
The synthesis of II−VI semiconductor nanocrystals doped with transition metals has proved to be particularly difficult. In the case of CdSe quantum dots (QDs) produced via high-temperature pyrolysis in trioctylphosphine oxide (TOPO), specially designed precursors used in this study appear to be necessary to successful…
The single biggest challenge now facing drug delivery (for liposomes and indeed other carriers) is to initiate and produce release of the encapsulated drug only at the diseased site and at controllable rates. Our efforts have focused on developing a new thermal-sensitive drug delivery system, specifically for the loca…
Inorganic nanoparticles of different nature and size can be combined with the conducting polymers, giving rise to a host of nanocomposites with interesting physical properties and important application potential. Such nanocomposites have been discussed in this review, throwing light on their synthesis techniques, prop…
The recognition of the potential for enhanced fracture toughness that can be derived from controlled, stress‐activated tetragonal ( t ) to monoclinic ( m ) transformation in ZrO 2 ‐based ceramics ushered in a new era in the development of the mechanical properties of engineering ceramics and provided a major impetus f…
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTMedium-Controlled Aggregation of trans-StilbeneJavier Catalán, László Zimányi, and Jack SaltielView Author Information Departamento de Quimica Fisica Aplicada Universidad Aut\noma de Madrid, Spain Department of Chemistry, Florida State University Tallahassee, Florida 3…
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationIn Situ Characterization of the Surface Reaction between Chemisorbed Ammonia and Oxygen on Pt{100}Minseok Kim, Stephanie J. Pratt, and David A. KingView Author Information Department of Chemistry, University of Cambridge Lensfield Road, Cambridge CB2 1EW, U.K. Cite this: J…
Summary The effect of lignocellulosic materials on the board performance of thermoplastic polymer/wood composites was examined by using soft wood flours of 20 mesh- and 120 mesh-pass, steam-exploded beech flour, and two kinds of thermoplastic polymers, polyvinyl chloride and polystyrene. Steam-exploded wood flour was…
In this paper, we report that the interfacial interaction in polyimide (PI)/silica hybrid composites can be characterized by a fluorescence spectroscopy. We found that silica shows different effects on the fluorescence behavior of polyimide based on biphenyltetracarboximide (BPDA) depending on the type of diamine, tha…