Materials Literature
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A chiral calix[4]arene bearing l-2,3-dibenzoyltartaric acid groups at the lower rim was synthesized and could enantioselectively self-assemble to result in a gel or suspension only with one enantiomer of chiral amines; as revealed by electron microscopy, the resultant gel was of nanofibers with a high aspect ratio but…
Obtaining superoleophobicity is a difficult challenge due to the low surface tension of oils. Here, a highly fluorinated 3,4-ethylenedioxypyrrole monomer was synthesized by a multi-step reaction and employed for the elaboration of superoleophobic films by electrochemical polymerization (one-pot method, mild conditions…
The presence of space charge changes locally the electric field distribution in power cable insulation and may play an important role in tree development, thus accelerating the dielectric breakdown. This paper is concerned with the computation of the electric field in polyethylene-insulated power cables affected by wa…
We describe the preparation and characterization of polythioesters composed of alternating alpha-amino acid and alpha-thioglycolic acid residues that undergo dynamic constitutional exchange under mild conditions. The polymers are assembled via reversible ring-opening polymerizations of 1,4-thiazine-2,5-diones and rela…
Neural prosthetic implants are currently being developed for the treatment and study of both peripheral and central nervous system disorders. Effective integration of these devices upon implantation is a critical hurdle to achieving function. As a result, much attention has been directed towards the development of bio…
Chevrel-phase sulfides CuxMo6S8, where 2.0≤x≤4.0, were prepared by reacting appropriate amounts of Cu, Mo, and MoS2 powders at 1273–1523 K for 8 h in vacuum. The samples were then densified by pressure-assisted sintering at 1223–1473 K for 1 h at a pressure of 30 MPa in vacuum. The density of all the sintered samples…
We have developed hollow multicellular structures by polyelectrolyte-mediated self-assembly of yeast cells around magnetically responsive inorganic templates and have demonstrated the cells' viability in the produced "cellosomes" after the subsequent dissolution of the core-particles.
The elastic properties and Debye temperatures of xB2O3–70TeO2–(30–x)WO3, (0 ≤ x ≤ 30 mol%) glasses have been investigated using sound velocity measurements at 4 MHz. Ultrasonic and thermal parameters, combined with the results of IR spectroscopic analyses, were employed to explore the effect of B2O3 on the structure o…
Providing adequate vascularization is one of the main hurdles to the widespread clinical application of bone tissue engineering approaches. Due to their unique role in blood vessel formation, endothelial cells (EC) play a key role in the establishment of successful vascularization strategies. However, currently availa…
Abstract Density functional theory calculations have been performed on the electronic structure and the atomistic structure of yttrium aluminum garnet Y 3 Al 5 O 12 , YAG, and related crystals (yttrium aluminum perovskite YAlO 3 , yttria Y 2 O 3 , and corundum α‐Al 2 O 3 ). The quality of the computed data provides re…
Three-dimensional cubic (Im3m) periodic mesoporous organosilicas with aromatic benzene- and thiophene-bridging groups were synthesized using 1,4-bis(triethoxysilyl)benzene and 2,5-bis(triethoxysilyl)thiophene as organosilica precursors in the presence of a F127 PEO–PPO–PEO triblock copolymer under acidic conditions. H…
Potential energy surfaces for H(2) release from hydrazine interacting with borane, alane, diborane, dialane and borane-alane were constructed from MP2/aVTZ geometries and zero point energies with single point energies at the CCSD(T)/aug-cc-pVTZ level. With one borane or alane molecule, the energy barrier for H(2)-loss…
Layered double hydroxides, a class of anionic nanoclays, have emerged as drug delivery carriers characterized by an effective uptake mechanism via clathrin-mediated endocytosis and high reservoir capacity. In the present review, the efficacy of an anticancer drug with ceramic nanocarriers, i.e. layered double hydroxid…
The formation of a self-assembly between a sensitising antenna and an Eu(III) functionalised cyclen complex 1.Eu, tethered to a gold surface via a C(12) alkyl thiol spacer, is described where changes in the Eu(III) emission signal the formation, and dissociation, of a ternary complex.
The organogel formation of 2,3-dihydroxyimino-oleanic acid in different organic solvents was reported for the first time. The structure and physical properties of the organogel were studied by scanning electron microscopy, circular dichromism spectroscopy and differential scanning calorimetry. The intermolecular hydro…
A temperature-induced shapeable film material was prepared from guar gum-based gel with an ionic liquid, 1-butyl-3-methylimidazolium chloride, by soaking and compression techniques.
Novel tailor-made poly(ester urethane)s (PUs) based on microbial polyesters poly(3-hydroxybutyrate-co-4hydroxybutyrate) (P3HB4HB) and poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBHHx) were synthesized by melting polymerization (MP) using 1,6-hexamethylene diisocyanate (HDI) as a coupling agent. A comprehensive ch…
Ray-tracing exercise and full-wave analysis were per- formed to validate the performance of a type of cloak composed of isotropic metamaterials. It is shown that objects inside the 'folded region' of this cloak appear invisible to the incoming light from a ray tracing exercise, but exhibit magnifled and shifted scatte…
The study aimed at screening and identifying a potential poly-beta-hydroxybutyrate (PHB) accumulating Bacillus strain and optimization of media parameters for increased PHB production by the strain. A Gram-positive bacterium that accumulated PHB was isolated from local garden soil of Bangalore. Based on morphological…
We investigate the electromagnetic properties of three- dimensional (3D) arbitrarily-shaped invisible cloaks based on the analytical fleld transformation theory instead of the complicated numerical simulations. Very simple closed-form expressions for flelds and energy ∞ows have been derived for arbitrarily-shaped 3D c…