Materials Literature
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Self-selected recovery of the photoluminescence (PL) of amphiphilic polymer encapsulated PbS quantum dots (QDs) was observed in water for the first time and possible mechanisms were proposed based on investigations by means of transmission electron microscopy, X-ray photoelectron spectroscopy (XPS), X-ray diffraction…
Nanosized semiconductor particles are of great scientific and technological interest because of their size-dependent electronic and optical properties. Semiconductor nanocrystals have been investigated, for example, as nano-fillers for diverse polymer matrices in order to produce new optically active materials. Here w…
Exchange between the SO42− ions in ettringite and borate is believed to occur during borate removal from wastewater by the Ca(OH)2–Al2(SO4)3 addition method. To investigate borate uptake by ettringite, we synthesized ettringite in the presence of H3BO3 and prepared suspensions of ettringite in H3BO3 solution. At the t…
Hydrothermal reactions of mixed ligands 5-sulfosalicylic acid (H(3)SSAL) and macrocyclic oxamide complex (CuL) with M(ClO(4))(2)·6H(2)O (M = Mn, Gd and Cu) afford three new complexes, including [Mn(II)(2)Mn(III)(SSAL)(2)(CuL)(2)(OH)(H(2)O)(3)]n (1), {[Gd(2)(HSSAL)(2)(CuL)(4)(C(2)O(4))(H(2)O)(2)]·2H(2)O}(n) (2) and [Cu…
The reaction of monomeric [(DIPPh)(2)nacnac]YbCl(2)(THF)(2) ((DIPPh)(2)nacnac = N,N-diisopropylphenyl-2,4-pentanediimineanion) with NaOAr (OAr = 2,6-diisopropylphenoxide) in THF afforded the mononuclear complexes [(DIPPh)(2)nacnac]Yb(OAr)Cl(THF) 1 and [(DIPPh)(2)nacnac]Yb(OAr)(2) 2 depending on the molar ratio of dich…
Controlled formation of silver nanoparticle arrays with high particle density and short interparticle distances was achieved by using supramolecular nanotapes of PEO–oligopeptide conjugates as templates to direct the nucleation and growth of silver nanoparticles either from silver salt solutions followed by photoreduc…
Foams are ideal model systems to study stress-driven dynamics, as stress-imbalances within the system are continuously generated by the coarsening process, which, unlike thermal fluctuations, can be conveniently quantified by optical means. However, the high turbidity of foams generally hinders the detailed study of t…
A phase magneto-optical effect in periodic diffraction structures, i.e., a resonant change in the phase of the diffraction order under a change in the magnetization of the material of a structure, has been considered. The theoretical description of the effect is given in terms of the resonant excitation of an eigen-mo…
WO 3 films have been prepared onto IrO 2 -coated Ti substrate by electro-deposition, and as-deposited and annealed films have been characterized by using Raman spectroscopy. It was found that the asdeposited film consists of orthorhombic WO 3 · H 2 O phase, which transforms to amorphous WO 3 by annealing at 250°C and…
The reaction of oxadiazole bridging pyridyl-N-oxides (2,5-bis(4-pyridyl-N-oxide)-1,3,4-oxadiazole (A1) and 2-(4-pyridyl)-5-(4-pyridyl-N-oxide)-1,3,4-oxadiazole (A2)) with different substituted aromatics (R-aromatics, R = –OH, –NH2, –COOH) have been investigated. Eight new organic co-crystals of 1–8 were synthesized an…
Boron oxide is a key component to tailor the softening temperature and viscosity of the sealing glass for solid oxide fuel cells (SOFCs). The primary concern regarding the use of boron-containing sealing glasses is the volatility of boron species, which possibly results in cathode degradation. In this paper, we report…
This mini-review discusses the recent contribution of theoretical and computational physics as well as experimental efforts to the understanding of the behavior of colloidal particles in confined geometries and at liquid crystalline interfaces. Theoretical approaches used to study trapping, long-and short-range intera…
Pure and Zr, La or Pr-doped cerium oxides were characterised by transmission electron microscopy (TEM), N2 adsorption-desorption at -196 oC and X-ray diffraction (XRD). For crystal sizes calculation, the Scherrer and Williamson-Hall equations were compared, and the relationship between surface area and crystal size wa…
The emission properties of 2-m region fluorescence of Tm 3+ -Ho 3+ co-doped tellurite glasses are investigated. Introducing F -ions to the composition of tellurite glasses plays a positive effect on the 2-m emission. A maximum intensity of 2-m emission is achieved when 1.5-mol% Tm2O3 and 1-mol% Ho2O3 concentration are…
In this study, silver nanoparticles were synthesized using the fungus, Aspergillus fumigatus. The effects of three independent variables including glucose content of culture media, initial pH and initial spore concentration on biosynthesis of silver nanoparticles were investigated. These variables affect cell morpholo…
A high-valent Mn oxide species is successfully synthesized on the surface of hydrotalcite (Mn/HT-Ox), and is found to act as an efficient heterogeneous catalyst for the oxidation of alcohols using molecular oxygen as an oxidant.
Lateral diffusion of three different dye molecules (terrylene and two perylene diimides) in 4 to 225 nm thin films of 8CB liquid crystals in the smectic-A phase has been investigated on a single molecule level. The influence of film thickness on tracer diffusion can be qualitatively modeled by a hydrodynamic approach.…
Novel bent-core molecules based on phenyl benzoate rigid cores and heptamethyltrisiloxane units at one or at both ends of the aliphatic side chains were synthesized and investigated by polarized light microscopy, differential scanning calorimetry, X-ray diffraction and electrooptical methods and the effect of the dire…
Layered zinc hydroxide intercalated with dodecyl sulfate (LZH-DS) was prepared by facile alkaline precipitation method in a short reaction time at room temperature. We also controlled the size of the layered structures with different kinds of alcohols (ethanol, 1-propanol, 1-butanol and 1-pentanol), and not by control…
Two new Mn(15) clusters consisting of a supertetrahedron which is incorporated in a loop are reported. The reactions of [Mn(O(2)CEt)(2)]·2H(2)O with the diols 1,3-propanediol (H(2)pd) or 2-methyl-1,3-propanediol (H(2)mpd) in the presence of KX (X = CN(-), Cl(-), Br(-), NO(3)(-), ClO(4)(-), OCN(-), SCN(-)) afforded com…