Materials Literature
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An easy process was developed to synthesize TiO(2) nanowires sensitized with CdS and CdTeS quantum dots (QDs) requiring no pretreatment of the TiO(2) nanowires prior to nanoparticle generation. CdS and CdTeS nanoparticles were firstly grown by an in situ colloidal method directly onto the TiO(2) surface, hence not req…
Abstract µLaue diffraction sheds light onto the deformation behavior of miniaturized samples. Here we present a new instrumental setup for the in situ deformation of micron sized specimens at BM32 of the ESRF synchrotron source. Furthermore, a compression test of a 7 µm sized single slip oriented copper pillar is pres…
Abstract Quantum‐mechanical (so‐called ab initio ) calculations have achieved considerable reliability in predicting physical and chemical properties and phenomena. Due to their reliability they are becoming increasingly useful when designing new alloys or revealing the origin of phenomena in existing materials, also…
The synthesis and evolution of the structure, magnetic ordering, and superconductivity of the layered iron arsenides Sr 1- x Na x Fe 2 As 2 is reported. In the Sr 1- x Na x Fe 2 As 2 solid solution, the limiting Na-rich composition in samples made using conventional solid state synthesis at elevated temperatures occur…
Abstract Biosynthesis of poly(3‐hydroxybutyrate) (PHB) from raw starch as the carbon source by the polysaccharide‐digesting bacteria Saccharophagus degradans was investigated in a fed‐batch culture. The production and properties of the PHB synthesized from starch were compared to those obtained using glucose as carbon…
Interfacial electron transfer (ET) to and from semiconductor quantum dots (QDs) is of intense interest because of its important roles in many applications, including biosensors, light-emitting diodes, and solar cells. In this work, we have investigated the photoinduced ET between water-soluble CdTe QDs and nitrobenzen…
Zink-chronisierte Gelbildung: Die selektive, durch Zink ausgelöste Bildung eines Hydrogels wird durch die Selbstorganisation eines de novo konzipierten Peptids erzielt (siehe Bild). Ein nicht-natürlicher, Zink-bindender Aminocarboxylat-Rest wird in das Peptid eingebaut und wird zur Auslösung der Faltung, Organisation…
Owing to the important roles of chemical gates in biological systems, the biomimetic design of artificial switchable nanodevices has been attracting tremendous interest. Here, we design a cylindrical thermo-sensitive channel, in which nanofliudic transport properties can be controlled by manipulating environmental tem…
A distributed contact model is presented for a 1-D quasi-ballistic conductor deriving a contact resistance versus contact length as a hyperbolic cotangent relationship in terms of the quantum of resistance, the coupling conductance gcof the contact, and the ballistic mean free path (λb). The model gave excellent fits…
The self-assembled fibrillar network (SAFIN) organogels of a simple surfactant molecule, sodium laurate (C(11)H(23)COONa, SL), in organic solvents were investigated. The sol-gel transformation temperature depended on the SL concentration, the solvent, and the concentration of Na(+) was evaluated. An important finding…
A novel high refractive index positive-tone photosensitive polyimide (posi-PSPI) has been successfully developed. The posi-PSPI has a refractive index of 1.78 at 633 nm and good transparency (> 80% at 400 nm). It is prepared from an alkali—soluble transparent polyimide precursor, a diazo-naphthoquinone-type photoac…
We demonstrate the functioning of a macromolecular nanoreactor which guides a reaction in a confined volume and leads toward improved functional properties of a product material. In our approach, the polymerization of aniline (ANi) is conducted within the interfacial volume of spherical polyelectrolyte brushes (SPB) w…
A novel non-lithographic technique for the fabrication of carbon nanotube thin film transistors is presented. The whole transistor fabrication process requires only one mask which is used both to pattern transistor channels based on aerosol synthesized carbon nanotubes and to deposit electrodes by metal evaporation at…
Photosensitive nanoparticles (NPs) were fabricated by employing chitosan hydrochloride (CHC) and photosensitive 4-oxo-4-(pyren-4-ylmethoxy) butanoic acid (PYBA) through ionic self-assembly. Transmission electron microscope (TEM) images showed that the average diameter of the complex NPs depended on the charge molar ra…
We synthesized AuPt alloyed nanoparticles in colloidal solution by a one-pot procedure based on synchrotron x-ray irradiation in the presence of PEG (polyethylene glycol). The exclusive presence of alloyed nanoparticles with fcc structure was confirmed by several different experiments including UV-vis spectroscopy, x-…
Deposition under control: Silica nanoparticles with finely controllable size and surface charge were synthesized under benign conditions. By adjusting the electrostatic interactions, the silica nanoparticles can be assembled onto inorganic and biological surfaces in a controllable fashion. Potential uses for cell enca…
Recently, there has been significant interest in the synthesis and potential applications of semiconductor nanotubes (NTs). In this context, many efforts have been invested in developing new routes to control and engineer their surface chemistry. We report herein on a simple route to differentially and selectively fun…
New push-pull dyes featuring π-extended tetrathiafulvalene (exTTF) as the donor group and tricyanofuran (TCF) as the acceptor group were synthesized and characterized. Their broad absorption covers the entire visible spectral range and enters the near-infrared region. Electrochemistry and theoretical calculations prov…
The synthesis of ligand L(P)H(8), based on a 2,6-bispyrazolyl-pyridine scaffold functionalized by iminobismethylenephosphonate functions, is described and its pK values were determined by a combination of pH-spectrophotometric titrations and potentiometry. The interaction of L(P) with Tb(3+) was investigated in water…
Three novel inorganic−organic hybrid arsenomolybdates constructed from monocapped trivacant [As III As V Mo 9 O 34 ] 6− fragments with [Cu(en) 2 ] 2+ or [Cu(dap) 2 ] 2+ linkers, [Cu(en) 2 H 2 O] 2 {[Cu(en) 2 ][Cu(en) 2 As III As V Mo 9 O 34 ]} 2 ·4H 2 O ( 1 ), (H 2 en) 1.5 [Cu(en)(Hen)][As III As V Mo 9 O 34 ]·2H 2 O…