Materials Literature
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Films of single-wall carbon nanotubes (SWCNTs) were cast from suspensions in several solvents on the surface of a Pt or Au electrode. Cyclic voltammetry of the films in MeCN did not show well-resolved waves (as distinct from films of C_(60) prepared in a similar manner). However, the increase in the effective capacita…
One hundred-forty-five full-length aldehyde dehydrogenase-related sequences were aligned to determine relationships within the aldehyde dehydrogenase (ALDH) extended family. The alignment reveals only four invariant residues: two glycines, a phenylalanine involved in NAD binding, and a glutamic acid that coordinates t…
Magnetically driven actuator materials, such as the ternary and intermetallic Heusler alloys with composition , are studied within the density-functional theory (DFT) with the generalized gradient approximation (GGA) for the electronic exchange and correlation. The geometrical and electronic structures for the magneti…
Functional conjugated polymers prepared by electrochemical polymerization are reviewed. Various classes of functionalized polymers are considered such as polymers for energy storage and sensor applications, small band gap polymers and novel polymeric materials with original macromolecular structure. Particular emphasi…
Abstract No Abstrast.
Ligand and metal control of self-assembly in supramolecular chemistry, Rolf W. Saalfrank and Bernhard Demleitner bistability in iron (II) spin-crossover systems - a supramolecular function, Jose Antonio Real fluorescent sensors for and with transition metals, Luigi Fabbrizzi Maurizo Licchelli, Piersandro Pallavicini,…
Nanocrystalline yttrium aluminium garnet (YAG, Y3Al5O12) and Ce-doped YAG ceramics were synthesized by two ‘soft chemistry' sol–gel processes using (i) mixtures of inorganic salts or oxides and (ii) mixtures of alkoxides of the respective elements. In the first approach the metal ions, generated by dissolving metal ox…
One-pot synthesis of 5,10,15-triphenylcorrole has been achieved by reaction of benzaldehyde with an excess of pyrrole; the triphenylphosphinocobalt complex of 5,10,15-triphenylcorrole has been structurally characterized using X-ray crystallography.
The design, synthesis and some optical properties of hybrid organic-inorganic nanocomposites materials are presented. The properties that can be expected for such materials depend on the chemical nature of their components, but they also depend on the synergy of these components. Thus, the interface in these nanocompo…
The mechanically stable spatial arrangements of interacting molecules (potential energy minima, ``inherent structures'') provide a discrete fiducial basis for understanding condensed phase properties. Simple plausibility arguments have been advanced previously suggesting that at fixed positive density the number of di…
Silicon chips form the backbone of modern computing and yet until recently, the surface chemistry of this technologically essential material has remained relatively unexplored. As the size of devices on silicon wafers shrink (towards gigascale integration), the surface characteristics play increasingly crucial roles i…
Elements: O, H, D, T, F, Cl, Br, I(J), At, 3He, He, Ne, Ar, Kr, Xe, Rn. Elements: S, Se, Te, Po. Elements: N, P, As, Sb, Bi. Elements: C, Si, Ge, Sn, Pb. Elements: B, Al, Ga, In, Tl. Elements: Zn, Cd, Hg, Cu, Ag, Au, Fe, Co, Ni, Ru, Rh, Pd, Os, Ir, Pt. Elements: Mn, Tc, Re, Cr, Mo, W, V, Nb, Ta, Ti, Zr, Hf. Elements:…
We used directed evolution to convert Bacillus subtilis subtilisin E into an enzyme functionally equivalent to its thermophilic homolog thermitase from Thermoactinomyces vulgaris. Five generations of random mutagenesis, recombination and screening created subtilisin E 5-3H5, whose half-life at 83 degrees C (3.5 min) a…
Emulsions are metastable colloids made out of two immiscible fluids, one being dispersed in the other, in the presence of surface active agents. Emulsion droplets exhibit all the classical behaviours of metastable colloids: Brownian motion, reversible phase transitions as a result of droplet interactions that may be s…
The identification of design criteria for the prevention of surface fouling by protein adsorption has been an elusive research goal. The current ideas in this domain assume two different directions. One focuses on correlating protein adsorption with macroscopic surface properties such as the water wettability. The sec…
Carbon nanotubes provide a unique system for studying one-dimensional quantization phenomena. Scanning tunneling microscopy was used to observe the electronic wave functions that correspond to quantized energy levels in short metallic carbon nanotubes. Discrete electron waves were apparent from periodic oscillations i…
The structure of CaTiO 3 has been studied at high temperatures by powder neutron diffraction methods. From inspection of the diffraction data two phase transitions are evident, with an intermediate tetragonal ( I / mcm ) structure forming near 1500 K and a primitive cubic structure above 1580 K. Detailed Rietveld anal…
The crystallographic structure and the magnetic order of the distorted perovskite ${\mathrm{La}}_{1\ensuremath{-}x}{\mathrm{Sr}}_{x}{\mathrm{CoO}}_{3}$ $(0.10<~x<~0.30)$ has been studied by neutron diffraction, high-resolution electron microscopy, and magnetic-susceptibility measurements. The results give direct…
Although tetrathiafulvalene (TTF) and its derivatives have been extensively studied for more than 25 years as π-electron donors in intermolecular charge-transfer materials, the intriguing potential of TTF as a donor in an intramolecular sense has only recently been developed. Many versatile, functionalized TTF buildin…
Monodisperse hollow nanocylinders consisting of crystalline titania particles have been directly prepared in a porous alumina membrane by a deposition technique using an aqueous solution system of titanium tetrafluoride.