Materials Literature
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Structural and dynamical properties of iodine molecules incorporated in one-dimensional elliptic channels of AlPO(4)-11 (AEL) crystals were studied by means of molecular dynamics (MD) simulations. It was found that the iodine molecules in the AEL channels are restricted in the (101) planes with only two favorite orien…
We present a thermodynamic analysis of the effect of nonhydrostatic stresses on solid-fluid equilibrium in single-component systems. The solid is treated in the small-strain approximation and anisotropic linear elasticity. If the latent heat of the solid-fluid transformation is nonzero and pressure in the fluid is fix…
We present direct imaging of the emission pattern of individual chromium-based single photon emitters in diamond and measure their quantum efficiency. By imaging the excited state transition dipole intensity distribution in the back focal plane of high numerical aperture objective, we determined its 3D orientation. Em…
We investigate the reactivity of MoO(4)(2-) toward six organoammonium cations (+)(Me(3-x)H(x)N)(CH(2))(2)(NH(y)Me(3-y))(+) (x, y = 1-3) at different synthesis temperatures ranging from 70 to 180 °C. A total of 16 hybrid organic-inorganic materials have been synthesized at an initial pH of 2, via ambient pressure and h…
Phonons, the quantum mechanical representation of lattice vibrations, and their coupling to the electronic degrees of freedom are important for understanding thermal and electric properties of materials. For the first time, phonons have been measured using resonant inelastic x-ray scattering (RIXS) across the Cu K-edg…
A novel modifying process was designed to prepare ultra small magnetic chitosan nanoparticles which exhibited unique thermal stability and decomposition mechanism. The chemical structures and physical properties of the prepared products were characterized using FTIR, TEM, XRD, TGA and DSC techniques. The results revea…
An efficient Nd3+→Yb3+ energy transfer in a new series of alkali-free barium-alumino-metaphosphate glasses with a transfer efficiency reaching up to 95% has been reported here. It is due to the effective phonon assistance arising with the excellent matching of the present host phonon energy with the energy mismatch be…
Electrospun nano, micro and micro/nano (multiscale) poly(caprolactone) (PCL) fibrous scaffolds with and without nano hydroxyapatite (nHAp) was prepared. All the scaffolds were evaluated for its spectroscopic, morphological, mechanical, thermal, cell attachment and protein adsorption properties. The cell attachment stu…
In this study the possibility to control the size and shape of self-assembled structures through the local curvature of their molecular building blocks has been investigated. To this end a series of amphipathic conjugated oligothiophenes with a well-defined curvature of their backbone has been designed and synthesized…
Emissive semiconductor nanocrystals can be efficient FRET donors to chemically responsive organic fluorophores; conjugating the two creates a ratiometric (or self-calibrating) sensor. Given that the organic component engenders chemical and/or biological sensitivity, it is natural to assume that the NC−dye response is…
In this paper we discuss and experimentally demonstrate that in a quasi- zero-average-refractive-index (QZAI) metamaterial, in correspondence of a divergent source in near infrared (λ = 1.55 μm) the light scattered out is extremely directive (Δθ(out) = 0.06°), coupling with diffraction order of the alternating complem…
The experimental results for the high-frequency transport characteristics (from 0.5 to 110 GHz) of graphene sheets are presented. Samples with graphene sheets of a different number of layers, as well as samples without graphene, were fabricated and compared by their room-temperature radio-frequency (RF) transmission p…
We study the thermodynamics and chain conformation of side-chain liquid crystal polymers (SCLCPs) in the bulk using the self-consistent-field approach and a new model to account for the coupling between the orientation of the side-chain liquid-crystal (LC) groups and that of the backbone segments. The new model accoun…
Eu‐activated Sr 5 (PO 4 ) 2 SiO 4 with apatite structure was synthesized by the combustion synthesis. The phase formation and morphology were investigated by X‐ray powder diffraction and scanning electron microscopy measurements, respectively. The phosphors were characterized by photoluminescence excitation and emissi…
A solution phase synthesis is used to prepare tetragonal zirconia nanoparticles. Ammonia solution and zirconia precursor solution were prepared separately and then mixed together to get colloidal hydroxide precipitate. The colloidal hydroxide was treated with silica sol and then the precipitate was separated and dried…
A not-so-innocent counterion: A facile synthetic method has been successfully developed to construct two unusual discrete, octanuclear planar “open” distorted-square M/S/Ag clusters {[Sr(DMAC)6]2[M4S16Ag4]} (M=Mo, W; DMAC=N,N'-dimethylacetylamide) and a unique 1D double-chain W/S/Ag cluster {[Sr(DMAC)6][W2S8Ag4I2]}n (…
Abstract A soluble polyamide was synthesized from aromatic and aliphatic monomers by condensing 4‐aminophenyl sulfone with sebacoyl chloride in dimethylacetamide (DMAc) at low temperature under inert atmosphere. A stoichiometric amount of triethylamine was added to precipitate the HCl produced during the polymerizatio…
Biomimetic mineralization of vertical N-doped carbon nanotubes is demonstrated as a straightforward route for carbon-based mineral nanocomposites. The N-doped sites along the carbon nanotube backbone play the role of nucleation sites for mineralization.
Six new dicationic 2D nonlinear optical (NLO) chromophores with pyrazinyl-pyridinium electron acceptors have been synthesized by nucleophilic substitutions of 2,6-dichloropyrazine with pyridyl derivatives. These compounds have been characterized as their PF(6)(-) salts by using various techniques including electronic…
Abstract Montmorillonite nanoclay and polyurethanes obtained from polyethylene glycol (PUR 400) and polyoxypropylene diol (PUR 1002) were used to enhance the mechanical properties of an epoxy resin. Maximum impact strength improvement was obtained with compositions containing 2% nanoclay and 10% PUR 400 as well as tha…