Materials Literature
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In a series of large-capacity oxygen storage materials using the redox between Ln 2 O 2 SO 4 (S 6+ ) and Ln 2 O 2 S(S 2 - ), the Pr system can work at as low as 600 °C, compared to ≥650 °C required for Ln = La, Nd, and Sm. The exceptional character of the Pr system has been studied from physicochemical points of view…
The uncertainty associated with the position of one H atom in curcumin, C21H20O6, has been resolved by establishing the enol tautomeric form supported by an intramolecular O—H⋯O hydrogen bond.
Light shines through: A one-step self-assembly synthesis of mesoporous silica particles with encapsulated organic dyes (see image) is described. The dyes are physically encapsulated inside nanosize channels/tubes in micrometer-size silica matrix particles. There is virtually no leakage of the dyes and the fluorescence…
The effect of 1.5 keV Ar + ion irradiation on the (001) surfaces of potassium titanyl arsenate, KTiOAsO 4 (KTA), has been investigated using reflection high-energy electron diffraction (RHEED) and X-ray photoelectron spectroscopy (XPS). The (001) KTA surface is very sensitive to 1.5 keV Ar + ion irradiation which indu…
Based on the known partial cDNA sequence of dragline silk protein an artificial gene monomer, a 360 bp sequence, was designed and polymerized to encode an analog of dragline silk protein. Six tandem copies of monomer were cloned into pBC1 vector and microinjected into the pronuclei of fertilized Kunming White eggs. Tr…
This paper describes the synthesis of wedge-shaped, charged amphiphilic molecules bearing an ammonium group at the tip that are able to organize negatively charged luminophores through an ionic self-assembly (ISA) process into discotic liquid-crystalline materials. For this purpose, two negatively charged luminescent…
We studied the role of the bursicon gene in wing expansion. First, we investigated its expression at different developmental stages in the silkworm, Bombyx mori. Bursicon gene was expressed at low levels in larvae, high levels in pupae, and low levels again in adults. Then, we injected the double-stranded bursicon RNA…
The thermodynamic concept used to quantify adhesion on a fundamental molecular level is the work of adhesion. However, most of the experimental techniques give no, or very limited information about its magnitude. In this paper, a way to estimate the work of adhesion for copper−(acrylonitrile-butadiene-styrene) (ABS) i…
Nanopatterned polymer brushes with sub-50-nm resolution were prepared by a combination of electron-beam chemical lithography (EBCL) of self-assembled monolayers (SAMs) and surface-initiated photopolymerization (SIPP). As a further development of our previous work, selective EBCL was performed with a highly focused ele…
Mesoporous Poly(benzimidazole) with well-defined porosity and pore diameter of 11 nm was synthesized via a hard templating approach using silica nanoparticles as template. The effect of the template concentration as well as the influence of the cross-linking density on the resulting pore structure was investigated. Th…
An oxetane group-carrying methacrylate, 3-ethyl-3-(methacryloyloxy)methyloxetane (EMO), was polymerized via copper-mediated atom transfer radical polymerization (ATRP) initiated from the surface of monodisperse silica particles (SiPs). The polymerization proceeded in a living manner producing SiPs grafted with well-de…
High-quality nanowires of germanium telluride (GeTe), a one-dimensional chalcogenide phase-change nanostructure, were synthesized via thermal evaporation method under vapor−liquid−solid mechanism. The physical morphology, chemical composition, and crystal structure of the as-synthesized GeTe nanowires were investigate…
This paper investigates dendritic peptides capable of assembling into nanostructured gels, and explores the effect on self-assembly of mixing different molecular building blocks. Thermal measurements, small angle X-ray scattering (SAXS) and circular dichroism (CD) spectroscopy are used to probe these materials on macr…
The effect of water on the adsorption of NO 2 onto a γ-Al 2 O 3 catalyst support surface was investigated using Fourier transform infrared spectroscopy (FTIR) and mass spectrometry (MS). Upon room-temperature exposure of the alumina surface to small amounts of NO 2, nitrites and nitrates are formed, and at higher NO 2…
We report on a one-pot, highly selective chemistry to remove residual catalysts from single-walled carbon nanotubes (SWNTs). The impurities, initially present at approximately 35 wt % and mostly as carbon-coated iron nanoparticles, can be driven below 5 wt % with nearly no loss of SWNTs. The carbon-coated iron impurit…
Abstract Poly(lactide) (PLA)‐coated paperboards (PB) were prepared, and the effect of coating for improving water resistance of paperboard used for corrugated box liners was tested. Surface of paperboards became smoother through PLA coating, and their thickness and weight of coating increased depending on the concentr…
Shine a light! Columnar mesomorphic assembles of propeller-like hydrogen-bonded complexes show a chiral photoresponse upon irradiation with circularly polarized light (CPL) of a given handedness (see picture). The materials can behave as a supramolecular switch that undergoes helix inversion when irradiated with the o…
Abstract High energy ball milling (HEBM) was utilized, as an innovative process, to incorporate carbon nanotubes (CNTs) into a polyethylene (PE) matrix avoiding: high temperatures, solvents, ultrasonication, chemical modification of carbon nanotubes. Composites with 1, 2, 3, 5, and 10 wt % of carbon nanotubes were pre…
We present a first-principles technique for investigating the electron-phonon interaction with millions of k points in the Brillouin zone, which exploits the spatial localization of electronic and lattice Wannier functions. We demonstrate the effectiveness of our technique by elucidating the phonon mechanism responsib…
Abstract This paper reports on microcapsules obtained by layer‐by‐layer deposition of bio‐polyelectrolyte multilayers at the surface of biodegradable dextran microgels. The behavior of the layer‐by‐layer coating upon degradation of the microgel core strongly depends on the bio‐polyelectrolytes used. Two types of micro…