Materials Literature
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Abstract BACKGROUND: ABA‐type poly(methyl methacrylate) (PMMA) and fluorine‐containing polyimide triblock copolymers are potentially beneficial for electric materials. In the work reported here, triblock copolymers with various block lengths were prepared from fluorine‐containing difunctional polyimide macroinitiators…
Abstract A new trifluoromethyl‐activated trifluoro monomer was successfully prepared by Pd‐initiated coupling of 1,3,5‐tribromobenzene with 4‐fluoro‐3‐trifluoromethylphenylboronic acid. 1,3,5‐Tris(4‐fluoro‐3‐trifluoromethylphenyl)benzene ( B 3 ) leads to several hyperbranched poly(arylene ether)s when reacted with thr…
Die Anlagerung von Gegenionen an makroionische {Mo72V30}-Polyoxometallate nimmt mit steigender Makroionen-Konzentration und sinkender Solvenspolarität zu. Die Gegenionen verteilen sich im Umkreis von 2–9 Å um das Makroion, mit der höchsten Dichte bei 2–3 Å Entfernung von der Makroionenoberfläche (siehe Bild). Ein enge…
Nanostructured materials are extensively investigated for application in energy storage and power generation devices. This paper deals with the synthesis and characterization of nanomaterials based on oxides of vanadium and with their application as electrode materials for energy storage systems viz. supercapacitors.…
The creation of stimuli-responsive materials offers considerable challenges in the area of material science. The use of light as an external stimulus has particular advantages because it can bring about rapid transformations in remote regions in a very precise manner. Naturally occurring photoresponsive systems provid…
UV/vis absorption and time-resolved fluorescence measurements on alcoholic solutions of meso-tetrakis(4-sulfonatophenyl)porphyrin (TPPS(4)) in neutral and acid form have been performed as a function of the alcohol polarity. These solutions show a peculiar behavior that mimics porphyrin in confined water solutions. In…
The self-organization in solution of ZnO nanocrystals into superlattices is monitored by dynamic light scattering. When long-alkyl-chain amines or carboxylic acids are used as stabilizing ligands, no organization is observed. In contrast, when binary mixtures of long-alkyl-chain amines and carboxylic acids are used, t…
The lattice dynamical and allied properties of the multiferroic manganites SmMnO 3 , EuMnO 3 and GdMnO 3 were investigated in this work by means of a shell model with transferable pairwise interionic interaction potential. This shell-model potential is able to reproduce the available crystal structure and phonon frequ…
OFF-ON-OFF: By reversible modulation of the oxidation states of the synthesised IrIII complex seen here, distinct electron-transfer efficiencies are exhibited and, remarkably, affect the properties of the IrIII core in the excited state. Thereby, a redox-controlled “OFF-ON-OFF” molecular phosphorescence switch is real…
Abstract Multidimensional and morphological population balance (PB) models for crystallization processes have been proposed in literature, which can be used to simulate the dynamic evolution of particle shape as well as particle size distribution. These models, however, can become computationally expensive when the cr…
Abstract In this study, La 0.4 Sr 0.6 CoO 3‐δ (LSC) oxide was synthesized via an EDTA‐citrate complexing process and its application as a mixed‐conducting ceramic membrane for oxygen separation was systematically investigated. The phase structure of the powder and microstructure of the membrane were characterized by X…
Arsenic(II) sulfide (AsS)-coated CdSe core-shell nanocrystals can be prepared by a cluster-complex deposition approach under mild conditions. At 60 degrees C, growth of an AsS shell onto a CdSe nanocrystal can be realized through the crystallization of a cluster complex of AsS/butylamine in a mixed solvent of isopropa…
In the present work, the gelatin/fibronectin affinity was evaluated using SPR, QCM and radiolabelling. The results indicate that type A gelatin films possess a higher affinity for Fn compared to type B gelatin. This is due to a combined hydrophobic and electrostatic interaction between gelatin type A and Fn. In a seco…
Upconversion nanoparticles (UCNs), in the recent times have attracted attention due to their unique properties, which makes them ideal fluorophores for use in biological applications. There have been various reports on their use for targeted cell imaging, drug and gene delivery and also for diffuse optical tomography.…
Nanocrystallines of rare earth complex, Eu(TTA)(3).3H(2)O, were synthesized by the chemical precipitation method and were characterized by elemental analysis, ultraviolet visible absorption spectroscopy (UV-vis), infrared spectroscopy (IR), differential thermal analysis-thermogravimetry (TG-DTA), X-ray diffraction (XR…
We have investigated both ${\mathbf{q}}_{\mathbf{1}}$ and ${\mathbf{q}}_{\mathbf{2}}$ charge density wave (CDW) states taking place in ${\text{NbSe}}_{3}$ by means of low-temperature scanning tunneling microscopy (STM) under ultrahigh vacuum on the in situ cleaved $(\mathbit{b},\mathbit{c})$ surface. High-resolution t…
Abstract The synthesis, structural determination and magnetic study of a trinuclear Mn II –Gd III –Mn II complex involving a Schiff base ligand are described. The structural study demonstrates that the complex presents a linear arrangement of the Mn and Gd ions, with hexacoordinate Mn ions in slightly distorted or dis…
Abstract This Microreview presents a concise overview of the different synthetic approaches that have been applied to porphyrin dendrimers over the years, with the porphyrin macrocycle(s) being embedded variously as the dendritic cores, at the peripheries, within the branching units, or spread throughout entire dendri…
We present a detailed study of the (100) surface of the orthorhombic ${\text{Al}}_{13}{\text{Co}}_{4}$ crystal using both experimental and ab initio computational methods. This complex metallic alloy is an approximant of the decagonal Al-Ni-Co quasicrystalline phase. After sputter-annealing preparation of the surface…
Spectroscopic properties of Bi-doped SrB(4)O(7) glasses, sintered compounds, polycrystalline materials, and single crystals were investigated. Broadband near-infrared luminescence was realized in Bi-doped SrB(4)O(7) glasses with basicity and polycrystalline materials with non-bridging oxygens. In Bi:SrB(4)O(7) single…