Materials Literature
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By using functional mimics of the protein silicatein alpha together with organic structure directing agents, it was possible to produce different mesoporous and microporous molecular sieves at room temperature and neutral pH.
Published research works concerning fabric handle and its basic mechanical properties were surveyed in this review. Fabric handle and its mechanical properties have been studied continuously using KES system for various kinds of fabrics in the period between 1998 and 2005. Statistical investigation by neural network m…
Doping a small quantity of additive Bi2O3 is effective in suppressing the deliquescence of KNbO3 ceramics. When an optimized ball-milling process was included, dense and nondeliquescent KNbO3 ceramics were obtained by a conventional firing process. However, the presence of Bi prevented grain growth (<0.2 μm) and it…
Submicron- and nanometer-sized red luminescent particles (Y2O3:Eu3+) were successfully generated by flame spray pyrolysis (FSP) and the effect of the type of the atomizer, i.e., the ultrasonic nebulizer (UN) and the two-fluid nozzle (TFN) sprayer, on the particle characteristics was investigated. The prepared particle…
In this contribution we report on an in situ enzymatic self-assembly of a polyaniline (PAN) monolayer on modified hydroxyl-terminated surfaces. The consecutive assembly steps consist of a chemical deposition of 3-aminopropyltrimethoxysilane (APT) as a coupling agent with a positively-charged amine end group. The next…
In this work, a polypropylene (PP)/attapulgite nanocomposite was prepared via melt blending using a novel organically modified attapulgite (OATP). The thermal stability of PP/clay nanocomposites compared to pure PP was examined in nitrogen using a kinetic analysis. The kinetic parameters, including reaction order and…
Polycationic or neutral dendrons of generation 1 to 3 bearing protonated (or not) amino end groups and a vinyl group at the focal point as well as polyanionic or neutral dendrons of generation 1 to 3 decorated with carboxylate or carboxylic groups on their surface and exhibiting a vinyl group at the core were prepared…
The syntheses of two analogues of the bicyclic guanidinate ligand hpp (hpp = the anion of the guanidine-type compound 1,3,4,6,7,8-hexahydro-2H-pyrimido[1,2a]pyrimidine) which contain two fused rings are reported. Each compound contains one seven-membered ring while the other is either a five (Htbd) or a six (Htbu) mem…
The effect of hydrogen on fatigue crack growth behavior of four stainless steels has been investigated from the viewpoint of martensitic transformation. The crack growth rates in hydrogen-charged SUS304 and SUS316 were accelerated. The crack growth rate in hydrogen-charged SUS316L was slightly higher than uncharged SU…
The 21,23-dithia and 21-thia analogues of phlorins and mono-functionalized thiaphlorins were synthesized using easily available precursors and the mono-functionalized thiaphlorins were used further to synthesize the first examples of three covalently linked thiaphlorin-porphyrin dyads.
The study of the influence of UV irradiation on collagen solutions has shown the destabilization of the collagen molecule by calorimetric method. It is reflected both in changes of thermodynamic parameters of transition ( T m , Δ H , C p = f ( t )) and in the appearance of a low temperature peak, that is practically i…
A novel poly(ferrocenylsilane) with a coumarin side group was synthesized. This photoreversible polymer exhibits interesting electrochemical activities, which change with photodimerization and photoscission reactions of the coumarin moieties.
To understand the textural properties of carbon replicas obtained from the charring of styryl-based LDH hybrid assemblies, the calcination process was carefully studied within a temperature domain between 500 and 700 °C. Supported by several characterizations such as nitrogen gas adsorption, X-ray diffraction recorded…
A novel spin transition between S = 5/2 and S = 3/2 has been observed for the first time in five-coordinate, highly saddled iron(III) porphyrinates by EPR and SQUID measurements at extremely low temperatures.
Nanostructured CdTe films were electrodeposited on CdS substrates from lyotropic liquid crystalline phases of non-ionic surfactants using citric acid. The deposition mechanism was studied using cyclic voltammetry. The effect of citric acid on the deposition properties of CdTe was investigated. The CdTe films were char…
We report the synthesis and structural characterisation of a new family of stable phosphonioalkylthiosulfate zwitterions, R3P+ (CH2)nS2O3- (R = Ph or Bu, n = 3,4,6, 8 or 10) which behave as cationic masked thiolate ligands with applications in the functionalisation of gold nanoparticles, having potential as new diagno…
Optical properties of Gd 3+ ions doped in YAl 3 (BO 3 ) 4 are investigated as a new UV phosphor under excitation of VUV radiation. A strong emission line at 3.96 eV (313 nm) corresponding to the transitions from the 6 P 7/2 to 8 S 7/2 states of Gd 3+ ions is observed. We performed the Rietveld refinement using an X-ra…
The incorporation of a single beta-aminoethane sulfonyl amide moiety in a highly amyloidogenic peptide sequence resulted in a complete loss of amyloid fibril formation. Instead, supramolecular folding morphologies were observed. Subsequent chemoselective N-alkylation of the sulfonamide resulted in amphiphilic peptide-…
Organo-layered double hydroxides (LDHs) have attracted much attention recently for their utility as solid base catalysts, providing an environmentally friendly heterogeneous phase alternative to conventional stoichiometric liquid bases. Here we describe a synthetic approach for the production of layered double hydroxi…
Oxide scales formed on Fe-Cr alloys were characterized by electrochemical resistance measurements and microstructure observation.Fe-Cr alloy samples were exposed to air on one side and fuel gas ͑dilute CH 4 -H 2 O with N 2 ͒ on the other side under current flow ͑0.3 Acm -2 ͒ ͑dual atmospheres and current flow͒.The all…