Materials Literature
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A combination of direct current (d.c.) electric field and moderately elevated temperature is applied to a glass with embedded spherical silver nanoparticles in the near surface region. The field-assisted dissolution of silver nanoparticles leads to the formation of a layer of percolated silver clusters with modified o…
A carbon supported Pt-Ru catalyst with uniform distribution and small average size of the Pt-Ru particles was synthesized using a two-step spray pyrolysis (SP) method; the electrocatalytic activity of the prepared catalyst for methanol oxidation is better than that of the standard commercial catalyst.
The synthesis, crystal structures and magnetic properties of two hexanuclear Fe(6) clusters of general formula [Fe(6)(O)(2)(OH)(2)(O(2)CR)(10)(dipaH(2))(2)].xMeCN.yH(2)O (R = Ph, x= 5.5, y= 1 (1), R = C(Me)(3), x= 2, y= 3 (2)) are reported. The presence of the flexible amino-alcohol ligand diisopropanolamine (dipaH(3)…
A new method has been developed for the preparation of core-shell particles with thick, pH-responsive, polymer shells. In the first step, poly(vinylpyridine)(PVP) microgel particles are adsorbed onto oppositely-charged, ∼5 µm diameter silica spheres, to form "raspberry-like" structures. After separation, these "raspbe…
The design and chemical synthesis of a series of hybrid flexible self-assembling supramolecules utilising both crown ether-naphthalene diimide host-guest chemistry and metalloporphyrin-pyridyl coordination is discussed. The resulting compound structures and dynamics are probed using a variety of techniques, including…
Results of dielectric studies for three tolane derivatives containing the isothiocyanato (NCS) and alkyl or alkoxy groups in the terminal positions are presented. A relaxation process associated with molecular rotations around the short axes has been observed in the crystal‐like smectic phases (B, E, K). The K phase w…
We report strong experimental evidence on the formation of a molecular lyotropic phase in water of a modified polyaramide, namely a fully sulfonated poly(p-phenylene terephthalamide) (Sulfo2PPTA) that exhibits similar liquid crystalline behaviour in water to its non-sulfonated counterpart (PPTA, commercially known as…
The solubility of drugs in solvents is fundamentally important for drug development and manufacturing. As the experimental measurements of the solubility are extremely laborious tasks, reliable prediction methods are highly required. We have employed the conductor-like screening model for real solvents (COSMO-RS) in p…
Abstract A quantum spin‐correction scheme based on spin‐correlation functions is proposed for multiple bond‐breaking processes described by the unrestricted single determinant (USD) approaches, such as unrestricted Hartree–Fock (UHF) and unrestricted Kohn–Sham (UKS) density functional theory (DFT). It is known that na…
A soft hydrolysis technique involving static anion exchange has been developed in order to prepare extra-pure, hydroxide-free solutions of aluminium polyoxocations (Al13 and Al30) as well as for the preparation of nanosized, highly monodisperse aluminium hydroxide particles in the particle size range 5–150 nm. Quantit…
Crystallographic pits were grown on Al(100) at temperatures from 30 to 90°C, in solutions of HCl + H 2 SO 4 . Pits grew during a galvanostatic anodic pulse for 5-100 ms that was preceded by a galvanostatic cathodic pulse of 50 ms. The anodic potential has a small peak for 1-2 ms and then remains constant. The cathodic…
A highly ordered cubic mesoporous silica SBA-1 with enhanced stability towards washing with water has been synthesized simply by adding D-fructose as an auxiliary agent during the synthesis.
Poly(epsilon-caprolactone)-poly(ethylene glycol)-poly(epsilon-caprolactone) triblock co-polymers with number-average molar mass (Mn) over 20000 g/mol were prepared by ring-opening polymerization of epsilon-caprolactone initiated by poly(ethylene glycol) under microwave irradiation. This method was proposed as a means…
Amorphous hydrogenated silicon carbonitride (a-Si:C:N:H) films were produced by remote microwave hydrogen plasma CVD (RP-CVD) using (dimethylamino)dimethylsilane as a single-source precursor. The reactivity of the precursor with atomic hydrogen was characterized using (dimethylamino)trimethylsilane as a model compound…
The article presents results of an interdisciplinary project focusing on the development of degradable magnesium-implants. Those implants do not need to be removed after the healing process and therefore provide a huge benefit for patients and the health care system. Different magnesium fracture-screw designs are inve…
The International Union of Laboratories and Experts in Construction Materials, Systems and Structures (RILEM) was founded with the aim to promote scientific cooperation in the area of construction materials and structures worldwide. This mission is achieved through collaboration of leading experts in construction prac…
The interfacial aggregation of three thioether-substituted phthalocyanine–magnesium(II) complexes, MgPc(SR)8, of (2,3,9,10,16,17,23,24-octakis-ethylthiophthalocyaninato)magnesium(II), [MgPc(SEt)8], (2,3,9,10,16,17,23,24-octakis-benzylthiophthalocyaninato)magnesium(II), [MgPc(SBz)8], and (2,3,9,10,16,17,23,24-octakis-b…
Article A Mathematical Model for Preparation by AC-Electrospinning Process was published on September 1, 2005 in the journal International Journal of Nonlinear Sciences and Numerical Simulation (volume 6, issue 3).
In this study, we have designed, fabricated, characterized, and analyzed plasma-enhanced chemical vapor deposition (PECVD) diamond-based Schottky diodes for high power electronics applications. We have elaborated four critical issues in the synthetic-diamond semiconductor technology: 1) growth, 2) doping, 3) Schottky…
Transparent, crack-free mesoporous silica sol–gel monolith 2 was prepared from the hydrolysis of Si(OMe)4 in MeOH containing ethylene glycol (HOCH2CH2OH). Gradual exposure of the product monolith 1 to MeOH/H2O and then H2O helps prevent cracking of the monolith. Direct reaction of chelating diamine H2N(CH2)2NH(CH2)3Si…