Materials Literature
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Inverse-spinel oxide, cobalt ferrite CoFe2O4, has been synthesized by co-precipitation method, using as capping agent Carboxymethylcelullose (CMC) solution. The cubic structure (S.G. Fd-3m) was determined from X-ray diffraction (XRD) using a X-ray diffractometer The average crystallite size (13 nm) were calculated by…
A polypyrrole nanotube containing nanoparticles is prepared by a dual template approach, and the inside of the nanotube is selectively functionalized with carboxyl and amine groups.
A facile method to fabricate nano-architecture organosilane surfaces with tunable geometry is presented. By changing the water content of the reaction system, surface geometries with controlled shape, size and quantity are obtained. The corresponding wettability variation can vary from hydrophobic to superhydrophobic…
A facile method for the fabrication of Quantum Dot/poly(N-isopropylacrylamide) (QD/PNIPAM) micropatterns on glass is presented. Water-soluble QDs functionalized with polymerizable methacrylic groups effectively copolymerize with N-isopropylacrylamide monomer resulting in stable hybrid organic–inorganic networks. The p…
Using model catalysts, we demonstrate that CO desorption from Ru surfaces can be switched from that typical of single crystal surfaces to one more characteristic of supported nanoparticles. First, the CO desorption behaviour from Ru nanoparticles supported on highly oriented pyrolytic graphite was studied. Both mass-s…
Single phase Sr 2 Si 3 O 2 N 4 :Eu 2+ phosphors were prepared using high temperature solid state synthesis and optical properties were investigated for possible application in white Light Emitting Diodes. The phosphor shows broad PL emission in the red region, when excited using 450 nm light. The emission can be attri…
Almost all solid materials exhibit positive thermal expansivity. However, in many engineering designs, materials with negative thermal expansivity are desirable. The characteristics of high performance fibers, such as high strength, exceptional thermal conductivity and electrical insulation may also include negative t…
Electrodeposited polypyrrole films doped with hexasulfonated calix[6]arenes are mainly cation exchangers during electrochemically induced doping/undoping processes in a 0,1 M KNO 3 solution. This is shown here from ion concentrations variations and time constants extracted from ac -electrogravimetry experiments. EIS m…
An effective method for the development of magnetic materials with high microwave permeability on the basis of carbonyl iron powders has been proposed. This method consists in the modification of particle morphology from the spherical shape into flaky one with subsequent silica coating of the flakes by sol-gel method.…
Lanthanide phosphates are of increasing interest because of their sharp, stable photoluminescence with long lifetime. The emission of lanthanide phosphate can be easily changed by introducing different lanthanide ion dopants such as Eu and Tb for down-conversion and Er, Tm for up-conversion luminescence. However, the…
The per oral administration of compound 1, prepared by covalently attaching paclitaxel to a molecular carrier, shows good anti-tumor activity in the orthotopic mouse model of glioblastoma. The anti-tumor effects may be attributable to the cytotoxicity as well as the anti-angiogenic activity of the paclitaxel conjugate…
A 2:1 supramolecular assembly composed of a non-planar Mo(V)-porphyrin, [Mo(DPP)(O)(H(2)O)](+) (1) (DPP(2+); dodecaphenylporphyrin), and a Keggin-type heteropolyoxometalate (POM), α-[(n-butyl)(4)N](2)[SW(12)O(40)] (2), was formed via hydrogen bonds. The crystal structure was determined by X-ray crystallography to clar…
The effects of homogeneous low voltage electron beam irradiation (HLEBI) on the adhesive force (maxFp, oFp and minFp) and its energy (oEp) of peeling resistance of laminated sheets of bio-adaptable polydimethylsiloxane (PDMS) with transparency and high strength polypropylene (PP) without glue but with sterilization we…
This work was studied on the Pd/CeO2 used as catalyst for hydrogenation reaction in micro-reactor. A simple cerium complex for CeO2 was prepared from cerium nitrate and triethanolamine in 1-propanol. The feasible structures of cerium complexes as four-coordinate and five-coordinate Ce-TEA complexes were determined by…
In this study we report on the responsive behavior of organic/inorganic nanocomposite films. Specifically, the heat treatment of the films in the vapor of different solvents resulted in reversible rising and submerging of the nanoparticles incorporated into the film. The thin nanocomposite films consisting of silver n…
The title compound, an achiral flexible molecule containing a 1,2,3-triazole structure as the acceptor subunit, crystallizes as a single enantiomorph in the space groupP212121. The material exhibits nonlinear optical properties and is capable of second harmonic generation. Thus, the developed molecular scaffold repres…
This is a report on the controlled generation of a polyamine@silica hybrid nanograss surface on arbitrary substrates. A very simple biomimetic silica mineralization reaction (i.e., ambient temperature and neutral aqueous medium conditioned hydrolytic polycondensation of alkoxy silane) performed on a self-assembled, na…
The lithium amide (LiNH(2)) + lithium hydride (LiH) system is one of the most attractive light-weight materials options for hydrogen storage. Its dehydrogenation involves mass transport in the bulk (amide) crystal through lattice defects. We present a first-principles study of native point defects and dopants in LiNH(…
Electrospum polyaniline nanofibers doped with palladium nanoparticles have been demonstrated for hydrogen sensing in the formation of a chemresistor. These nanofibers have been deposited as single nanofibers across two gold electrodes by means of near-field electrospinning without using the conventional lithography pr…
A methodology is proposed to provide direct access in good yields to peptide residues-appended perylenediimides PDI-(Cl(4))-[Gly-Ala(OEt)](2), 2a, PDI-(Cl(4))-[Gly-Val(OEt)](2), 2b and PDI-(Cl(4))-[Gly-Gly(OEt)](2), 2c from a generic perylenediimide (PDI) platform symmetrically functionalized with carboxylic acids at…