Materials Literature
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Tissue engineering of multilayered constructs that model complex tissues poses a significant challenge for regenerative medicine. In this study, a three-layered scaffold consisting of an electrospun silk fibroin (SF) mat sandwiched between two dense collagen (DC) layers was designed and characterized. It was hypothesi…
Pseudolyonsite, ideally Cu 3 (VO 4 ) 2 , is a new mineral from the medium-temperature fumaroles of the New Tolbachik scoria cones, Tolbachik volcano, Kamchatka Peninsula, Russia. It occurs as needles that are 5–20 μm across and up to 0.5 mm in the length, which sometimes produce parallel intergrowths, sprays or openwo…
We investigate the effect of gradient sequence distribution in copolymers on order–disorder transitions, using rheometry and small-angle X-ray scattering to compare the phase behavior of styrene/ n -butyl acrylate (S/nBA) block and gradient copolymers. Relative to block sequencing, gradient sequencing increases the mo…
The mechanisms governing the efficient tumor spheroid penetration and transport by poly(amidoamine) (PAMAM) dendrimers displaying varying numbers of cyclic RGD targeting peptides (2, 3, 7, or 10) were evaluated in this work. The cell-free binding affinities and cellular internalization kinetics of PAMAM-RGD conjugates…
The photochemistry of a model merocyanine-spiropyran system was analyzed theoretically at the MS-CASPT2//SA-CASSCF(14,12) level. Several excited singlet states were studied in both the closed spiropyran and open merocyanine forms, and the paths to the different S(1)/S(0) conical intersections found were analyzed. Afte…
Abstract A new corrosion inhibitor namely poly(vinyl alcohol‐leucine) composite (PVAL) has been synthesized and its influence on corrosion inhibition of mild steel in 1 M hydrochloric acid solution has been studied by weight loss and potentiodynamic polarization techniques. The composite (PVAL) showed more than 95% in…
Two metallopolymers P1 and P2 were prepared by using a novel polymerizable Eu 3+ complex Eu(TTA) 3 VBADPO ( EuMA ) (TTA = 2-thenoyltrifluoroacetonate) and vinylcarbazole as the monomers in the ratios of 1:99 and 3:97, respectively, in which VBADPO is 2-(diphenylphosphoryl)- N -(2-(diphenylphosphoryl)-4-methoxyphenyl)-…
On the basis of four examples involving various transition-metal cations and various carboxylic acid derivatives, we have shown that hybrid 3d metal-containing polyoxometalate systems can be easily built under mild conditions.
Abstract Serious failure incidents like clogging, quick thinning, and leakage frequently occurred on lots of titanium tubes of heat exchangers in a nuclear power plant in China. In the Part I of the whole failure analysis study with totally two parts, factors mainly involving three kinds of electrochemical corrosions…
The near field enhancement in Ag Au nanospheres heterodimers excited at their respective resonance wavelengths is studied in detail using rigorous electrodynamics calculations based on the Generalized Multiparticle Mie theory. The effect of incident polarization, nanosphere radius, and interparticle separation on the…
Gel aus Öl: Zwei Supergelbildner auf Zuckerbasis können Öle verfestigen, wobei hoch transparente Gele mit glasähnlichen Brechungsindices entstehen. Diese Gele zeigen eine geringe Durchlässigkeit im UV-Bereich und eine hohe für sichtbares Licht und zeichnen sich zudem durch eine bemerkenswerte Selbstheilungsfähigkeit a…
From an interplay of atom-resolved noncontact atomic force microscopy, surface x-ray diffraction experiments, and density functional theory calculations, we reveal the detailed atomic-scale structure of the (100) surface of an insulating ternary metal oxide, MgAl2O4 (spinel). We surprisingly find that the MgAl2O4(100)…
Photoluminescence measurements showed that needle-like tungsten oxide nanostructures synthesized at 590°C to 750°C by the thermal evaporation of WO3 nanopowders without the use of a catalyst had an intense near-ultraviolet (NUV) emission band that was different from that of the tungsten oxide nanostructures obtained i…
The bulk polymerization of 2-(dec-9-enyl)-2-oxazoline (DecEnOx), a fatty acid-based monomer for the cationic ring-opening polymerization, is reported. Furthermore, under optimal conditions, namely microwave heating at 100 °C, the bulk copolymerization with 2-ethyl-2-oxazoline yielded well-defined copolymers. Due to it…
Abstract Titanium tubes generally exhibit superior resistance against electrochemical corrosions amid seawater for their passive films TiO 2 . However, hydrogen‐assisted corrosion (HAC) is actually the Achilles' heel to titanium materials when the temperature exceeds near 70 °C. In this event, severe degradations like…
Three-dimensional (3D) nanostructures were obtained by the directed formation of multilayer block copolymer (BCP) thin films. The initial step in this strategy involves the assembly and cross-linking of cylinder-forming polystyrene-b-poly(methyl methacrylate) (PS-b-PMMA) BCP, in which 1.5 mol % of reactive azido (-N(3…
Reliable synthesis of semiconductor–metal heterostructures would increase their availability for fundamental studies and applications in catalytic, magnetic, and opto-electronic devices. Here, we demonstrate there are three main pathways for the formation of Pt and Pd nanoparticles on CdS and CdS 0.4 Se 0.6 nanorods.…
We present an experimental study of disordered packings of deformable spheres. Fluorescent hydrogel spheres immersed in water together with a tomography technique enabled the imaging of the three-dimensional arrangement. The mechanical behavior of single spheres subjected to compression is first examined. Then the pro…
Abstract Molecular‐interaction‐induced organizations are the basis of various biological and nonbiological systems. The molecular recognition process involved in the formation of such systems is rather complicated, as it constitutes a subtle balance of various noncovalent interactions. The molecular organization of el…
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