Materials Literature
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Viscous, water-miscible, liquid multiwalled carbon nanotubes with an extraordinarily high degree of functionalization (hf-MWCNTs) have been obtained by means of a deep-sidewall modification process. The hf-MWCNTs behave as an ionic liquid, with a conductivity of 1 mS cm−1 at 100 °C. The unique properties of this mater…
Poly(gamma-benzyl-L-glutamate) (PBLG) has been a popular model polypeptide for a range of physicochemical studies, and its modifiable ester side chains make it an attractive platform for various potential applications. Thin films of Poly(gamma-benzyl-L-glutamate) PBLG were surface grafted within nanoporous anodic alum…
An investigation into the relationship between the measured bulk magnetostriction in rolled galfenol alloy sheet and the measured texture components was conducted. Galfenol rolled sheet was prepared using different texture annealing parameters such as temperature (1000–1300 °C), cooling rate, and dwell time (1–24 h),…
We report an experimental investigation of the nonlinear optical properties of nanoporous silicon optical waveguides measured at 1550 nm. The nonlinear properties including two-photon absorption, self-phase modulation, free-carrier absorption and free-carrier plasma dispersion are characterized and compared with simil…
Functional drug-delivery vehicles consisting of Ag-embedded bilayer membranes of a peptidic lipid nanotube (LNT) are synthesized. The Ag–LNTs possess antimicrobial ability against E coli, contributing to the release of Ag+ into the aqueous culture. The Ag–LNTs may be applicable to the delivery of DNA or biotechnologic…
Abstract The preparation of exfoliated polymer nanocomposites (PNC) in nonpolar system is still preoccupying researchers in the domain. The ball milling coupled with melt‐compounding was used for the preparation of polypropylene/montmorillonite PNC to evaluate the potential of ball milling in the improvement of clay d…
Herein, we report a facile synthesis of submicrometer-to-micrometer-sized single-crystalline Cu 2 O particles with cetyltrimethylammonium bromide (CTAB) as a capping material or template by γ-irradiation under ambient conditions. The morphologies of Cu 2 O single-crystalline particles, such as eight-pod cubic, six-arm…
Abstract Bright polymers : Fluorescent coordination polymers made up of versatile functionalized bodipy (boron‐dipyrrin) chromophore building blocks, such as that depicted, are described. Polymerization is signaled by changes in fluorescence emission intensity and shifts in peak emission wavelengths. magnified image W…
Microphase separation of A- b -B diblock copolymer brushes in selective solvents is investigated by single-chain-in-mean-field (SCMF) simulations. Depending on the solvent selectivity of the blocks, the fraction ( f ) of the A block, and the grafting density (σ), perpendicular segregation, lateral segregation, or thei…
Organically derivatised polyoxometalate (POM) clusters containing bromo or iodo groups can undergo ligand-free, Pd-catalysed Heck carbon-carbon coupling reactions with alkenes, with bromomagnesium phenylamide as a base (see scheme). This protocol offers a new route to organic-inorganic hybrid molecular materials in wh…
10.1021/ma802521a
Redispersible conductive core–shell nanoparticles with a polystyrene core and a polystyrene sulfonate shell loaded with polypyrrole (PPy) are constructed. The smooth conducting thin films assembled from the PPy core–shell nanoparticles show high transmittance in the visible range and adequate adhesion to the substrate…
Abstract Polyester nanocomposites based on poly(butylene terephthalate) (PBT) and carbon nanotube (CNT) were prepared by simple melt blending using a twin‐screw extruder. There is significant dependence of the thermal, rheological, and mechanical properties of the PBT nanocomposites on the concentration and dispersion…
Zn-ferrite (ZnFe2O4) thin films were deposited by rf-magnetron sputtering on glass substrates at room temperature (RT) in pure oxygen environment. The as-deposited films were investigated by x-ray diffraction to show that single phase nanocrystalline spinel patterns belong to zinc ferrite. The magnetization shows ferr…
Antibiotic resistance is a major issue in the treatment of infectious diseases such as tuberculosis. Existing antibiotics target only a few cellular pathways and there is an urgent need for antibiotics that have novel molecular mechanisms. The glmU gene is essential in Mycobacterium tuberculosis, being required for op…
Abstract Dipolar aggregation : Examples of a novel class of tweezer molecules have been constructed through the tethering of two dipolar merocyanine chromophores. The electrostatic‐interaction‐directed self‐assembly of these tweezers affords centrosymmetric bimolecular complexes with a unique aggregate geometry of fou…
We have studied the lower critical fields ${H}_{c1}$ of superconducting iron oxipnictide ${\text{PrFeAsO}}_{1\ensuremath{-}y}$ single crystals for $\mathbit{H}$ parallel and perpendicular to the $ab$ planes. Measurements of the local magnetic induction at positions straddling the sample edge by using a miniature Hall-…
New solid-state phenomena emerge when interfaces between different oxides are created with atomic-scale precision.
We analyze the high-energy Raman modes, G+ and G-, in a pair of one metallic and one semiconducting nanotubes. By combining Rayleigh scattering with Raman resonance profiles of the radial breathing mode and the high-energy modes, we show that the observed G- and G+ peaks can originate from longitudinal optical phonons…
Abstract New composite materials with a high percentage of their composition based on renewable resources, matrix and reinforcement, were prepared. The excellent compatibility of the main phases lead to an unusual outstanding composite behavior as follows: higher modulus and strength, but also higher deformability and…