Materials Literature
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We report the first attachment of polymers with pendant vinyl groups to hydrogen-terminated silicon(111) (Si(111)-H); 1,2-polybutadiene (M(w) = 3200-3500 g/mol) was attached to Si(111)-H under mild conditions at room temperature with visible light. We also report the partial functionalization, in solution, of 1,2-poly…
For the past three decades, a full understanding of the electro-optic (EO) effect in amorphous organic media has remained elusive. Calculating a bulk material property from fundamental molecular properties, intermolecular electrostatic forces, and field-induced net acentric dipolar order has proven to be very challeng…
Cu(II)-catalyzed intramolecular cyclization of meso-(4-aminopyrid-3-yl)ethynyl Zn(II) porphyrin provided meso-(5-azaindol-2-yl)-substituted Zn(II) porphyrin. meso,meso'-Bis(5-azaindol-2-yl)-substituted diporphyrin 7 was similarly prepared and was found to form a fluorescent trimeric prismatic assembly consisting of si…
Some of the recent progress in generating hierarchically structured hybrid materials using peptide–polymer conjugates is presented. In particular, we review some of the developments in de novo designed coiled-coil helix bundles and their synthetic polymer conjugates from a materials point of view. As one of the most i…
The development of blood-compatible materials is reviewed. It grew from originally simplistic views of physical requirements such as surface charge and wettability, to endothelial cells seeded onto a biodegradable cast, and tissue engineering. In vitro findings grew from the discovery of one specific protein being ads…
Abstract Crosslinking is an effective way to improve polymer properties. This paper focuses on ultraviolet‐induced crosslinking of poly(butylene succinate) (PBS) in the presence of a photoinitiator and a crosslinking agent at ambient temperature. The effects of the concentration of photoinitiator, the crosslinking age…
A dynamic model of the infinitesimal element of the flexible fiber is proposed, which describes the flexible fiber trajectory in the condensing zone of compact spinning with lattice apron. Based on the flow simulation in the condensing zone, the flexible fiber trajectory is simulated by a specially designed Matlab pro…
Periodic density functional theory calculations on large supercells have been carried out to investigate the atomic and electronic structure of small gold particles (Au 2, Au 4, Au 9, Au 13, and Au 14 ) supported on the (001) surface of various transition metal carbides (TiC, ZrC, VC, and δ-MoC). All the supported Au…
Surface enhancement of electromagnetic fields in plasmonic hot spots formed on rough silver films enables the observation of second-harmonic generation (SHG) from single metal nanoparticles. Nonlinear light scattering from these particles exhibits blinking in analogy to luminescence from single quantum dots, molecules…
Non-Alloyed Schottky and Ohmic Contacts to As-Grown and Oxygen-Plasma Treated n-Type SnO2 (110) and (101) Thin Films, Bierwagen, Oliver, White, Mark E., Tsai, Min-Ying, Nagata, Takahiro, Speck, James S.
OBJECTIVE: The objective of this study was to formulate DNA-loaded poly(d,l-lactide-co-glycotide) (PLGA) nanoparticles by a modified nanoprecipitation method. METHODS: DNA-loaded PLGA nanoparticles were prepared by the modified nanoprecipitation method and the double emulsion/solvent evaporation method. The characteri…
The possibility to synthesize large areas of silver grains organized in nanorings using a simple technique based on nanosphere lithography and electroless plating as a metal deposition method is described for the first time. In addition, we present a systematic SERS study of the obtained long-range ordered silver nano…
A single crystal of ${\text{Cu}}_{74.08}{\text{Al}}_{23.13}{\text{Be}}_{2.79}$ undergoes a martensitic phase transition at 246 and 232 K under heating and cooling, respectively. The phase fronts between the austenite and martensite regions of the sample are weakly mobile with a power-law resonance under external stres…
Carbonate crystallization experiments were carried out in the presence of solid-state oxides and silicates to test the effect of inorganic substrates on the formation of CaCO 3 metastable polymorphs. Experimental results unambiguously demonstrate the selective formation of aragonite and vaterite in numerous cases. Fur…
Abstract Metallic and semiconducting single‐wall carbon nanotubes (SWCNTs) were separated using agarose gel. When the SWCNTs isolated with sodium dodecyl sulfate (SDS) were embedded in agarose gel, the metallic SWCNTs were eluted from the gel by applying electronic field or mechanical stress, for example, centrifugati…
The isochorismate pyruvate lyase (IPL) from Pseudomonas aeruginosa, designated as PchB, catalyzes the transformation of isochorismate into pyruvate and salicylate, but it also catalyzes the rearrangement of chorismate into prephenate, suggesting that both reactions may proceed by a pericyclic mechanism. In this work,…
Binary zinc and cadmium antimonides and their ternary relatives with indium display complex crystal structures, but reveal at the same time narrow band gaps in their electronic structure at or close to the Fermi level. It is argued that these systems represent "electron-poor framework semiconductors" (EPFS) with avera…
The phosphoenolpyruvate: carbohydrate transferase system (PTS) transports glucose in Escherichia coli. Previous work demonstrated that strains lacking PTS, such as PB11, grow slow on glucose. PB11 has a reduced expression of glycolytic, and upregulates poxB and acs genes as compared to the parental strain JM101, when…
Abstract The demand for improved properties of common polymers keeps increasing, and several new approaches have been investigated. In the study reported here, composites with a polymer matrix comprising a blend of high‐density polyethylene with ethylene–vinyl acetate copolymer (EVA), and with polyhedral oligomeric si…
BACKGROUND: Enteric coating prevents oral dose forms from being digested in the stomach, which is required for drugs that are acid unstable, have an irritant effect on the stomach, or are designed to act in the small intestine. AIM: The objective of this study was to develop a novel gastroresistant delayed-release tab…