Materials Literature
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Luminescent europium and terbium complexes and a mixed Eu(III)-Tb(III) complex were prepared, each with three macrocycles coordinating to a single lanthanide ion to form a trimetallic system, and can be used for the ratiometric sensing of anions in the case of the mixed complex.
The optothermal properties of nanoparticles are of interest for biosensors and highly sensitive biochip applications. In this respect, the longitudinal resonance of Au nanorods was used to transform near infrared energy into thermal energy in a microfluidic chip. The resulting heat generated effectively caused pathoge…
The double transesterification polymerization of 3′,6′-bis(pinacolatoboron)fluoran and pentaerythritol is reported. A model dimeric compound was synthesized to demonstrate the effectiveness of bis-diols to undergo a double transesterification, which is driven by formation of the energetically favored six-membered di-e…
Colloidal inclusions in thin free standing liquid crystal films are ideal model systems for 2D anisotropic dispersions. Different types of self-organization in chain and lattice structures have been observed. The orientational elasticity of the anisotropic matrix and capillary forces are the dominating interaction mec…
The synthesis of silicon/silica nanoparticle composites by the bacterium Actinobacter sp. is demonstrated. More specifically, the formation of silicon/silica nanocomposite is shown to occur when the bacterium is exposed to K2SiF6 precursor under ambient conditions. Based on the earlier reports where this bacterium has…
Supersaturated ZnO–Al2O3 (>20at.% Al) thin films are grown by pulsed laser deposition technique on silica glass substrates at 600°C. They are characterized by combining x-ray diffraction, Al-K edge x-ray absorption near edge structures (XANESs), high resolution transmission electron microscope (TEM) imaging, TE…
This paper describes the synthesis of carbon nanofibers (CNFs) on solid carbon foam (“Hairy Foam”) by catalytic decomposition of ethylene. The effect of nickel loading on fiber diameter and morphology, CNF coverage, and fiber layer thickness is studied using SEM and N2/Kr-physisorption. The surface area increased from…
Zwitterionic phosphorylcholine showed better stabilization than oligo(ethylene glycol) in protecting big gold nanoparticles.
This Feature Article provides some representative examples of the role of defect chemistry in the properties of perovskite manganites. It will be shown that a precise control of their defect chemistry is essential in order to give a reliable and meaningful correlation between physical properties and composition.
A selectivity investigation of the covalent sidewall functionalization of SWNTs by reductive alkylation (Billups reaction) is reported. The functionalized tubes Rn-SWNT were characterized by UV-vis-nIR absorption, nIR emission and Raman spectroscopy. The reduction of SWNTs with sodium and the subsequent alkylation of…
One or two-component gels with tunable emission colours were obtained from the assembly of three red–green–blue fluorescent molecules. The intermolecular energy transfer between these molecules played a crucial role in providing the tunable colour by a single excitation wavelength of 365 nm in the mixed gels. These ge…
By applying the theory of thermally activated nucleation to the switching of ferroelectric domains, a method is developed to experimentally obtain the value of both the activation enthalpy, ΔH, and activation volume, V*, for the thermally activated process involved in ferroelectric switching. The method was applied to…
We have designed, synthesized and probed a dodecafluoro-subphthalocyaninato boron(III) unit, which bears a triphenylamine moiety in its axial position, as a novel electron donor-acceptor system.
Recently, much attention has been given to the fabrication of tissue-engineering scaffolds with nano-scaled structure to stimulate cell adhesion and proliferation in a microenvironment similar to the natural extracellular matrix milieu. In the present study, blends of gelatin and poly(L-lactide-co-epsilon-caprolactone…
(STF) model cathodes, with compositions and 0.5, prepared as dense films with a well-defined area and thickness on top of a single-crystal yttria stabilized zirconia substrate by pulsed layer deposition at were investigated by electrochemical impedance spectroscopy as a function of electrode geometry, temperature, and…
Nanosized and highly dispersed molybdenum carbide was fabricated in the carbon walls, along with the formation of ordered mesoporous carbons, via a one-pot organic-organic cooperative self-assembly approach.
We analyze a force-based quasicontinuum approximation to a one-dimensional system of atoms that interact by a classical atomistic potential. This force-based quasicontinuum approximation can be derived as the modification of an energy-based quasicontinuum approximation by the addition of nonconservative forces to corr…
Recently, the phase-field method has been extended and utilized across many fields of materials science. Since this method can incorporate, systematically, the effect of the coherency induced by lattice mismatch and the applied stress as well as the external electrical and magnetic fields, it has been applied to many…
Herein are described some rational synthetic pathways for generating complex architectures with enhanced application in either optics, catalysis, phase separation or magnetism. The ability of integrative chemistry to scissor condensed matter at several length scales where final objects will be macroscopically one-dime…
Solid-state two-dimensional refocused INADEQUATE MAS NMR experiments resolve distinct helical and beta-sheet conformational environments for both alanine and glycine in Nephila clavipes dragline silk fibers; the fraction of alanine and glycine in beta-sheet structures is determined to be 82% +/- 4% and 28% +/- 5%, res…