Materials Literature
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The exploitation of membranes within the chemical industry is an area of growing interest. Inorganic membranes promise high stabilities even under high temperature conditions (>200 °C). In addition, very high selectivities can be attained when dense ion-conducting membranes are employed. Here the characterisation of s…
A polypyrrole film, prepared electrochemically from a methyl benzoate solution of tetra-n-butylammonium bis(trifluoromethanesulfonyl)imide (TBATFSI), showed 26.5% strain and 6.7 MPa stress induced electrochemically in aqueous LiTFSI solution.
In this paper we consider double split-ring resonators recently suggested and used as inclusions in artificial composites with negative real parts of the permittivity and permeability (Veselago media). In the known literature, the polarization effects in these particles are not completely explained. Here, an analytica…
A mesoporous material based on aluminosilicate mixture was studied to investigate its ability to include drugs and then release them. Nonsteroidal anti-inflammatory agents such as diflunisal, naproxen, ibuprofen and its sodium salt have been used in this study. The preparation of the mesoporous material and its charac…
Three new Mn(III) porphyrin catalysts of O2.-dismutation (superoxide dismutase mimics), bearing ether oxygen atoms within their side chains, were synthesized and characterized: Mn(III) 5,10,15,20-tetrakis[N-(2-methoxyethyl)pyridinium-2-yl]porphyrin (MnTMOE-2-PyP(5+)), Mn(III)5,10,15,20-tetrakis[N-methyl-N'-(2-methoxye…
A nonisothermal phase field model for alloys with multiple phases and components is derived. The model allows for arbitrary phase diagrams. We relate the model to classical sharp interface models by formally matched asymptotic expansions. In addition we discuss several examples and relate our model to the ones already…
Some salientfeatures of platinum group metal compounds with sulfur, selenium or tellurium, known as chalcogenides, primarily focusing on binary compounds, are described here. Their structural patterns are rationalised in terms of common structural systems. Some applications of these compounds in catalysis and material…
The controlled growth of poly(glycidyl methacrylate) (PGMA) and poly(GMA-co-MMA) brushes by atom transfer radical polymerization (ATRP) in methanol/water has been demonstrated on silicon wafer surfaces. A polymerization system using copper(I) bromide, copper(II) chloride and 2,2′-dipyridyl was found to produce a nearl…
Gold nanoparticles passivated by a monolayer of functional thiolates represent a new promising tool in supramolecular chemistry since they allow the preparation of complex, self-organized, polyvalent structures with a very modest synthetic effort. These systems have sizes comparable to those of many biological molecul…
A novel backward directional coupler, composed of a conventional microstrip (CμS) line and composite right/left-handed (CRLH) line, is proposed. This coupler is functionally backward but it is based on a forward-type coupling phenomenon. The coupler is shown to exhibit broad bandwidth and tight coupling characteristic…
Crystal engineering has become an established part in various segments of industrial research. The toolbox of crystal engineering not only offers design strategies for performance chemicals and characterization tools for active ingredients but also helps to provide fundamental concepts for understanding the principles…
Three new basal-apical, mu(2)-1,1-azide bridged complexes, [CuL(1)(N(3))](2) (1), [CuL(2)(N(3))](2) (2) and [CuL(3)(N(3))](2) (3) with very similar tridentate Schiff base blocking ligands [L(1) = N-(3-aminopropyl)salicylaldimine, L(2) = 7-amino-4-methyl-5-azahept-3-en-2-one and L(3) = 8-amino-4-methyl-5-azaoct-3-en-2-…
Polyoxometalates have been traditionally the subject of study of molecular inorganic chemistry. Yet, these polynuclear molecules, reminiscent of oxide clusters, present a wide range of structures and with them ideal frameworks for the deployment of a plethora of useful magnetic, electroionic, catalytic, bioactive and…
Decomposition of the precursor Bi[N(SiMe3)2]3 in the presence of poly(1-hexadecene)0.67-co-(1-vinylpyrrolidinone)0.33 and a small amount of NaN(SiMe3)2 in 1,3-diisopropylbenzene solution at 203 °C gives Bi nanowires. The single-crystalline wires are several micrometers in length, and possess a mean diameter of 5.9 ± 2…
The crystal structures of the complete series of n-alkyl carboxylic acids from hexanoic to pentadecanoic acid have been determined following in situ crystallisation. The structures reveal that the melting point alternation across the series is correlated with alternating crystal density. All even acids crystallise fro…
A family of tetranuclear mixed-valent Mn(II)(2)/Mn(III)(2) complexes of type [Mn(4)(LH(2))(2)(LH)(2)(H(2)O)(x)(RCO(2))(2)](Y)2.nS has been synthesised and structurally characterised, where LH(3) = triethanolamine (N(CH(2)CH(2)OH)(3)), (R=CH(3), x=2, Y = CH(3)CO(2)-, n=2, S = H(2)O; 1), (R=C(6)H(5), x=0, Y=C(6)H(5)CO(2…
A detailed simulation of the fringing-field effect in liquid-crystal (LC)-based blazed-grating structures has been carried out. These studies are aimed at clarifying the relationship between the width of the fringing-field-broadened phase profile of the blazed grating and the LC cell thickness. This fringing-field bro…
The online analysis of cadmium selenide nanoparticle formation in continuous-flow microfluidic reactors is described. The as-produced particles exhibit sharp excitonic absorption and emission peaks (∼30–40 nm) with relatively high quantum efficiencies (∼10%). The mean size and dispersity of the particles, determined u…
Mechanical properties and shape memory behavior of Ti-Mo-Ga alloys were investigated in order to develop Ni-free biomedical shape memory alloys. The Ti-Mo-Ga alloys were fabricated by arc melting method. The ingots were cold-rolled up to 95% reduction in thickness. The cold-rolled specimens were heat treated in the te…
CO adsorption, NO adsorption and CO + NO reaction on various Pd model catalysts have been studied using vibrational spectroscopy from ultrahigh vacuum (UHV) up to elevated pressures (∼1 bar) and the kinetics of the reaction compared with the conventional high surface area Pd/γ-Al2O3 catalysts. The structure sensitivit…