Materials Literature
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2,6-Diacyl derivatives of naphthalene-1,8:4,5-bis(dicarboximide)s have been synthesized via Stille coupling reactions of the corresponding 2,6-distannyl derivative with acyl halides. Reaction of these diketones with hydrazine gave phthalazino[6,7,8,1-lmna]pyridazino[5,4,3-gh][3,8]phenanthroline-5,11(4H,10H)-dione fuse…
Isomers of Ir(2)(dimen)(4)(2+) (dimen = 1,8-diisocyanomenthane) exhibit different Ir-Ir bond distances in a 2:1 MTHF/EtCN solution (MTHF = 2-methyltetrahydrofuran). Variable-temperature absorption data suggest that the isomer with the shorter Ir-Ir distance is favored at room temperature [K = ∼8; ΔH° = -0.8 kcal/mol;…
Effect of Addition of Al to Single-Crystalline CoFe Electrodes on Nonlocal Spin Signals in Lateral Spin-Valve Devices, Oki, Soichiro, Yamada, Shinya, Hashimoto, Naoki, Miyao, Masanobu, Kimura, Takashi, Hamaya, Kohei
The successful regeneration of large defects in traumatized and diseased tissues depends on the availability of biodegradable and bioactive biomaterials able to guide the tissue during its repair by offering both a physical support and a control of its biological mechanisms. Recently, a novel class of natural, biodegr…
The variability in mechanical stress–strain behaviour of various silks obtained from Bombyx mori silkworm and Nephila madagascarensis spider fibres has been studied by high resolution Raman analysis using the Raman shift induced by application of a controlled strain on the νN–H mode as a probe. Silk fibres exhibiting…
We have used a surface forces apparatus to measure the normal force between two solid curved surfaces confining a film of nematic liquid crystal (5CB, 4'-n-pentyl-4-cyanobiphenyl) under hybrid planar-homeotropic anchoring conditions. Upon reduction of the surface separation D, we measured an increasingly repulsive for…
Highly optically transparent ceramics of (1− x ) Pb ( Mg 1/3 Nb 2/3 ) O 3 – x Pb ( Zr 0.53, Ti 0.47 ) O 3 ( PMN – PZT ) were fabricated by a two‐stage sintering method without La‐modification. The ceramics exhibited high optical transparency (64% at 1500 nm) for visible and near infrared wavelength. The ferroelectric…
Abstract Effect of different concentrations of sepiolite on thermal and rheological properties of linear low‐density polyethylene/starch blend was investigated. Vinyl trimethoxy silane was used as compatibilizing and crosslinking agent. The composites were produced by peroxide‐initiated melt mixing technique. Improved…
Towards the goal of development of a generic nanomaterial delivery system and delivery of the 'as prepared' nanoparticles without 'further surface modification' in a generic way, we have fabricated a hybrid polymer capsule as a delivery vehicle in which nanoparticles are loaded within their cavity. To this end, a gene…
Europium-doped lanthanum oxide (5 mol % Eu(3+):La(2)O(3)) was prepared by calcining europium-doped lanthanum hydroxide (5 mol % Eu(3+):La(OH)(3)) previously synthesized by a simple hydrothermal method. Interestingly, we observed different emission Eu(3+) signatures depending on the phase of the host (lanthanum oxide o…
ADVERTISEMENT RETURN TO ISSUEEditorialNEXTAdvances at the Frontiers of Photochemical SciencesMiguel A. Garcia-GaribayCite this: J. Am. Chem. Soc. 2012, 134, 20, 8289–8292Publication Date (Web):May 23, 2012Publication History Published online23 May 2012Published inissue 23 May 2012https://pubs.acs.org/doi/10.1021/ja301…
We investigate the structural transitions in a polymer induced by spherical and nonspherical crowding particles over a wide range of conditions. The polymer conformations are specified by the radius of gyration and the quality of the solvent in the absence of crowding particles. In the presence of crowding particles,…
Abstract Biodegradable polymer composites, typically based on biodegradable polymer matrices and natural‐organic fillers, are gaining rising interest and importance over the last few years. Several natural‐organic fillers can be used but the most widespread so far is wood, in the form of fibres or flour. Alternative c…
Geladene kolloidale Goldnanopartikel (AuNPs) können abhängig von der Temperatur in wässriger Lösung aggregieren und deaggregieren und zeigen eine Plasmonenkopplung, die reversibel und thermoresponsiv abgestimmt werden kann. Das reversible Abstimmen geschieht durch die Manipulation der elektrostatischen Wechselwirkung…
The nature of the interfacial structure between the core and the arms of a tetrapod quantum dot (QD) formed during the heteroepitaxial growth of a ZnS arm onto a CdSe core is not well understood but can be analyzed through the use of high-frequency electron paramagnetic resonance (HF-EPR) spectroscopy. The spectroscop…
Biominerals such as bones, teeth and seashells, very often have advanced material properties and are a source of inspiration for material chemists. As in biological systems acidic proteins play an important role in regulating the formation of CaCO3 biominerals, we employ poly(amino acid)s to mimic the processes involv…
A graphene nanoribbon with armchair edges is known to have no edge state. However, if the nanoribbon is in the quantum spin Hall state, then there must be helical edge states. By folding a graphene ribbon into a ring and threading it by a magnetic flux, we study the persistent charge and spin currents in the tight-bin…
With a range of desirable mechanical and optical properties, single wall carbon nanotubes (SWCNTs) are a promising material for nanobiotechnologies. SWCNTs also have potential as biomaterials for modulation of cellular structures. Previously, we showed that highly purified, dispersed SWCNTs grossly alter F-actin insid…
The 2.7 μm emission properties of Er(3+)/Nd(3+)-codoped fluorotellurite glasses were investigated in the present work. The thermal stability, refractive index, absorption and transmission spectra, and emission spectra were measured and investigated. The 2.7 μm emission in Er(3+)/Nd(3+)-codoped fluorotellurite glasses…
Abstract Although sub‐diffraction‐limit‐resolution optical imaging has been attained via superlenses in the UV regime, the corresponding resist profile in general exhibits a very poor contrast, far below the minimum requirement for photolithography. Here, it is experimentally demonstrated thin flat silver superlenses,…