Materials Literature
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In this paper, we report the use of lead sulfide quantum dot (PbS QD) bioconjugates as near infrared (NIR) contrast agents for targeted molecular imaging with expanded emission wavelengths beyond 1000 nm. The red-shifted emission band, coupled with the small particle size, which will facilitate clearance, both afford…
The drug molecule Propranolol has been encapsulated by a sol-gel process in an organic-inorganic hybrid matrix by in-situ self-assembly; the 2D HETCOR solid state NMR spectroscopy provides direct proof of the intimate spatial relationship between the host matrix and guest drug molecules.
Recently, much attention has been directed toward the study of Sc-doped zirconia electrolyte for intermediate-temperature SOFCs (IT-SOFCs) due to its fairly good ionic conductivity compared with conventional Y-doped zirconia, which can reduce the internal ohmic loss of the cell. For improving unit cell performance, an…
Skeletal biominerals often show complex morphologies and ultrastructures that are important for their mechanical function. The production of these biomineral structures requires exact control over mineral precipitation, which takes place under physiological conditions in the presence of gel-like organic matrices. Unde…
The use of a new O,N,N,O chelate has led to two new Fe6 and Fe18 molecular compounds, the latter with an unusual double-headed serpentine chain structure.
In this paper, we report a clever approach permitting, in one step, the synthesis of ordered (hexagonal phase) mesoporous silica functionalized with iodopropyl groups [I(CH2)3] located in the pore channels. This material was obtained by the hydrolysis and co-condensation of tetraethylorthosilicate (TEOS) and iodopropy…
A luminescent nonanuclear terbium(III) hydroxo cluster, Tb(9)(Hesa)(16)(mu-OH)(10)(NO(3)) (Hesa: hexyl salicylate), stabilized by unique two-way phenyl ring interactions, pi-pi stackings (d = 3.482-3.599 A) and C-H-pi interactions (d = 2.75-3.03 A) between adjacent pairs of salicylates, was structurally characterized…
Purpose: In this paper we report in vitro and in vivo results of Nanocrystalline Diamond Coatings which are used in medicine onto medical implants The very important property of carbon coatings is the protection living organism against the metalosis. Different medical implants with complicated shapes are covering by N…
The most common nonlinear equations of motion for the pulsation of a spherical gas bubble in an infinite body of liquid arise in the various forms of the Rayleigh-Plesset equation, expressed in terms of the dependency of the bubble radius on the conditions pertaining in the gas and liquid. However over the past few de…
Abstract. Composite materials made by metal clusters embedded in silicate glass matrices ex-hibit striking optical properties, interesting for photonic application, as well as important magnetic properties, such as superparamagnetism. These composites are also good candidates for appli-cation in catalysis and sensor t…
Routine analyses for soil cation exchange properties usually give only limited insight into the properties and management of soils containing significant amounts of variable charge. In this paper a procedure for determining a soil Charge Fingerprint is fully described, a model developed from simplified theory to under…
Incipient-wetness impregnation of gamma-Al(2)O(3) with HAuCl(4) and subsequent removal of chlorine with NaOH, and deposition-precipitation of HAuCl(4) on TiO(2) at pH 7 resulted in supported Au(3+) species. Time-resolved in situ XAS at the Au L(3) edge showed that the Al(2)O(3)-supported oxidic or hydroxidic species w…
Oriented multilayered films composed of alternating siloxane layers and organic layers were prepared from mixtures of tetramethoxysilane [Si(OMe)4] and unsaturated organotrimethoxysilane [RSi(OMe)3, where R is CH2CH(CH2)8– or CH2CH(CH2)2CHCH(CH2)4–], and the structures and macroscopic properties of the films were stud…
We studied the protein repellency of dextran brushes. Dextran was grafted to a polystyrene surface in a broad range of grafting densities using polystyrene-dextran block copolymers and the Langmuir-Blodgett deposition technique. Ellipsometry measurements confirmed a successful transfer of the dextran brush from the ai…
X-ray diffraction has been applied to reveal the effect of thermal aging on the crystallinity variation of XLPE insulation cables. The changes in the crystalline phase of XLPE during aging at different temperatures have been analyzed. The carried out investigations pointed out that thermal aging at temperatures above…
Cadmium sulfide thin films were prepared by chemical bath on glass substrates at 80°C. CdS was Er-doped during the growth process by adding water-diluted Er(NO3)33∙H2O to the CdS aqueous growing solution. The relative volume of the doping solution was varied in order to obtain different doping levels. The crystalline…
An ellipsometric data acquisition method is introduced to measure the optical properties of sample. It is based on a microellipsometer hardware layout integrated a high numerical aperture objective lens, which is aligned in the normal direction of sample surface. This technique enables to achieve ellipsometric data at…
Carbon nanohorns (CNHs) have been covalently functionalized with pyrene chromophores forming dispersible nanohybrids in CH2Cl2. Their photo-physical properties have been investigated by complementary steady-state and time-resolved absorption and fluorescence spectroscopies as well as electrochemistry. Upon photo-excit…
This manuscript introduces 7Li{6Li} spin echo double resonance (SEDOR) spectroscopy as a novel approach for studying the spatial distribution of lithium ions in solid electrolytes. Theoretical simulations using density operator theory as well as experimental validation on the model compound lithium carbonate reveal th…
The microstructure and superplastic behavior at 450°C and 500°C in Cu-Al-Mn-based shape memory alloys were investigated using optical microscopy and a tensile test. It was found that a fine α (fcc) + β (bcc) two-phase structure with a grain size of 3 μm in diameter can be obtained in Cu-Al-Mn-Ni alloy by annealing at…